6results about How to "Detection security" patented technology

The utility model discloses a line guiding device of eddy current detection mainly relates to eddy current detection technical field. Including arc plate, the upper alternation and equidistance of arc plate along its axial direction is equipped with first guide frame and second guide frame, first guide pulley that can rotate is installed on first guide frame, and the axial direction of first guide pulley is horizontally arranged, and the parallel second guide pulley of first guide pulley is rotatably installed on second guide frame, and the circumferential sliding connection of second guide frame is relative to arc plate, and the axial direction of second guide pulley is converted between horizontal and vertical based on the sliding of second guide frame, and when the axial direction of second guide pulley is horizontal, two second guide pulleys are respectively with two first guide pulleys isoflat. The utility model has the beneficial effect that is used to the connection line of eddy current detection head and carries out the guidance, makes it before entering the pipe mouth can keep the straight and neat conveying state.

The utility model relates to a kind of large motor dynamic insulation monitoring analysis and early warning device, it is characterized by including: DC mutual inductor, installation in the rotor ground circuit of large motor, for real-time monitoring the leakage current of large motor;Signal processing module is electrically connected with the output end of DC mutual inductor, for receiving the output signal of DC mutual inductor, and the output signal is converted;Controller is electrically connected with signal processing module, the controller is configured as: the output result of signal processing module is compared with set threshold value, to obtain the insulation monitoring result of large motor.The device can carry out dynamic monitoring to the rotor insulation state of large motor, detect safety, efficient, high precision, effectively reduce motor failure, guarantee the normal operation of rolling mill set.

This invention discloses a load-bearing capacity testing device for highway bridges used in transportation construction, relating to the field of bridge inspection. It includes a mobile chassis, a self-propelled wheeled platform that travels along the bridge deck. The chassis platform is equipped with a static loading mechanism and a deployment execution mechanism. The static loading mechanism is an independent static load application component based on support pillars. The detection module consists of several wireless sensors with built-in power supplies, data storage units, and wireless communication units, capable of independent operation. The outer shell of the detection module is provided with an adhesive backing layer or mechanical clips for fixing to the beam surface. The deployment execution mechanism is used to cross from the bridge deck to the underside of the bridge and install the detection module onto the underside or web of the beam. This load-bearing capacity testing device for highway bridges used in transportation construction achieves coordinated operation of bridge deck loading and under-bridge deployment through an integrated mobile platform, solving the problems of low efficiency caused by traditional inspection methods that rely on manual high-altitude operations.

The application discloses a substation primary equipment partial discharge source joint positioning method based on ultrasonic and infrared fusion, which comprises the following steps: 1, obtaining infrared images, ultrasonic images and phase images of the primary equipment; 2, pre-processing the infrared images and ultrasonic signal images of the primary equipment obtained in step 1; 3, fusing the infrared images and ultrasonic signal images based on a maximum selection-based fusion rule; and 4, realizing joint positioning of the partial discharge source based on the fused infrared ultrasonic images. The joint positioning method is more time-saving and labor-saving, the method can be used for fusing images and signal images, can reduce the influence of adverse factors, improve the recognition degree of the target source, and further ensure accurate positioning of the partial discharge source, has high detection efficiency and strong defect depth detection capability. The method avoids the interference of subjective judgment factors, is more accurate than the traditional detection method, and is safer in the detection process.

The application discloses a limited space toxic gas gradient detection system and method based on a UAV, and the system comprises the following steps: a multi-sensor integrated module is installed at the bottom of a UAV platform, and the module comprises a hydrogen sulfide electrochemical sensor, an oxygen optical sensor, a positioning module and a laser radar; a controller is connected with the UAV platform, the multi-sensor integrated module and a communication module; and a data processing terminal is connected with the controller through wireless communication. The method comprises the following steps: a two-dimensional vertical plane model of a vertical detection plane is generated based on LiDAR data, a plurality of detection points arranged in a matrix form are divided from the two-dimensional vertical plane model, spatial coordinate information, hydrogen sulfide gas concentration data and oxygen concentration data of each detection point are collected, and hydrogen sulfide and oxygen concentration data of all horizontal layers in the vertical direction are calculated based on the detection data by using a Kriging interpolation algorithm. The system and method can automatically realize high-precision gradient detection of toxic gases in the vertical direction in a limited space.

The utility model provides an ultrasonic thickness measuring device for a low-pressure circulating barrel. The ultrasonic thickness measuring device comprises an arc-shaped frame which is separably attached to the outer side of the low-pressure circulating barrel, an ultrasonic thickness measuring mechanism which is arranged on the arc-shaped frame in a sliding mode, and a handle which is connected with the arc-shaped frame. The ultrasonic thickness measuring mechanism comprises a driving assembly arranged on the arc-shaped frame in a sliding mode, a clamping assembly connected with the driving assembly, and an ultrasonic thickness gauge detachably connected with the clamping assembly. According to the ultrasonic thickness measuring device for the low-pressure circulating barrel, the arc-shaped frame is attracted and fixed to the outer side of the low-pressure circulating barrel through the magnet, the clamping assembly is driven by the driving assembly to move to the measuring position along the arc-shaped frame, and the fixing barrel is driven by the electric push rod to move; therefore, the probe of the ultrasonic thickness gauge is attached to the outer wall of the low-pressure circulating barrel to detect the thickness, multi-point thickness detection of the low-pressure circulating barrel is safer, more reliable, more convenient and faster, and the detection efficiency of the low-pressure circulating barrel is improved.