191 results about "Contact high" patented technology

An FCC process and apparatus comprising an enlarged riser section and a distributor in an elevated position and with an opening in its tip away from riser walls may reduce coke build-up along the interior walls of a riser. Catalytic mixing may be improved, which could reduce riser coking by increasing hydrocarbon contact with catalyst before contacting the riser wall. Increasing the distance between the introduction of the hydrocarbon and the riser wall may increase this likelihood for hydrocarbon-catalyst contact. Highly contaminated hydrocarbons cause greater coking than do normal hydrocarbons and this FCC process and apparatus may be effective in decreasing riser coking on such heavy hydrocarbons.

A voltmeter measures an unknown voltage on a target surface using multiple sampling stages or a parallel reference capacitor. A movable shutter may alternately be closed during resetting of a voltage measuring circuit and opened so as to expose a detector plate to the target surface during two sampling stages. Alternatively, the shutter may be used to modulate exposure of a detector plate to the target surface.

The invention discloses a non-contact energy transmission type ultrasonic machining device. The non-contact energy transmission type ultrasonic machining device comprises a grinding head, an amplitude-change rod, a front cover plate, piezoelectric ceramic, secondary magnetic ring coil, a primary magnetic ring coil and a tool handle. The grinding head, the amplitude-change rod, the front cover plate and the tool handle are sequentially connected, the piezoelectric ceramic is arranged in a concave assembly position of the tool handle, the secondary magnetic ring coil is fixed to the front cover plate, the primary magnetic ring coil is arranged on a mechanical arm of an ultrasonic machine, and gap is formed between the secondary magnetic ring coil and the primary magnetic ring coil. The non-contact energy transmission type ultrasonic machining device is ingenious and reasonable in structural design; because of the non-contact energy transmission structure design, not only is non-contact high-efficiency transmission of electric energy achieved, but also the problem of traditional slip ring abrasion in ultrasonic machining is solved, the heat generation phenomenon caused by contact friction is avoided, the rotation speed of a spindle is increased without limitations, and meanwhile the automatic tool changing requirement of a machining center can be met; moreover, because no exposed conductors exist, electric energy transmission is not influenced by environments, and the non-contact energy transmission type ultrasonic machining device is good in working stability, safe, reliable, capable of keeping work for a long time and high in working efficiency.

The invention discloses a non-contact high-temperature thermophysical property parameter measurement device and a non-contact high-temperature thermophysical property parameter measurement method. The non-contact high-temperature thermophysical property parameter measurement device consists of an electric heating system, a laser generation system, a load system, a strain measurement system and a data acquisition and analysis system. Laser serves as an instant energy source, and the measurement time is shortened; a laser comparator is used for measuring deformation of a material in a high-temperature environment; a non-contact laser comparator is used for measuring a deformation value of the measured material sample under high temperature; therefore, the deformation error caused by thermal expansion can be avoided; the laser comparator can precisely measure a precise displacement or strain of the sample under a condition of high-temperature loading through fine scales, so that the reliability of a measurement result is improved, and the measurement process is simplified and is easy to control. A thermocouple is used for measuring the temperature in a low-temperature stage, and a far infrared temperature measurer is used for measuring the temperature in a high-temperature stage, so that equipment can realize measurement of the thermophysical property of the material within the range from room temperature to 2,000 DEG C. The verification shows that the equipment has the advantages that the running process is easy to control, the measurement time is short, the accuracy is high, and the like.

The invention discloses a dynamic measurement method for train wheel diameter. The dynamic measurement method comprises the following steps of: symmetrically arranging line-structured light vision sensors along a train track and acquiring light bar images of fracture surface contours of a train wheel and an axle; determining an inner side surface equation of a rim through the light bar of the fracture surface contour of the wheel and a straight segment corresponding to the inner side of the rim, determining an axis equation of the axle through the light bar of the fracture surface contour of the axle, and calculating projection coordinates of the inner side surface of the center of a vertex circle of a wheel flange through the intersection of the axis and the inner side surface of the rim; calculating the diameter of the vertex circle of the wheel flange through projection coordinates of the center of the vertex circle of the wheel flange and the vertex of the wheel flange in the inner side surface of the rim; recovering complete fracture surface contour of the wheel through the light bars of the local contours of the inner side and the outer side of fracture surface of the wheel, and calculating the height of the wheel flange; and subtracting the height of the wheel flange twice from the diameter of the vertex circle of the wheel flange to obtain the diameter of the wheel. The invention discloses a dynamic measurement system for the train wheel diameter simultaneously. The dynamic measurement method and the dynamic measurement system provided by the invention can be adopted for non-contact high-precision dynamic measurement of the train wheel diameter.

The invention relates to multifocal holographic differential confocal super-large curvature radius measuring method and device, belonging to the technical field of optical precision measurement. The method comprises the following steps of: firstly, calibrating the long-focus value of a multifocal holographic lens by utilizing a differential confocal system so as to reduce the system error of measurement; realizing non-contact high-precision positioning at the cat eye position and the cofocal position of a measured piece by utilizing a differential confocal fixed-focus principle; and subsequently, realizing the high-precision measurement of a super-large curvature radius by utilizing a geometrical optics principle. The device comprises a point light source, a first spectroscope, a collimator objective, the multifocal holographic lens, the differential confocal system, an adjusting frame, a length measuring system and a moving track. The invention integrates the differential confocal high-precision fixed-focus principle and a multifocal holographic lens compression optical path principle for the first time, has the advantages of small displacement distance of the measured piece, high measurement precision, high measurement speed, strong ambient interference resistance, no damage to the measured surface and the like and can be used for the high-precision non-contact measurement of the super-large curvature radius.

The invention belongs to the technical field of optical precision measurement, relating to a method and a device for measuring the central thickness of a differential confocal lens. The method comprises the steps of: firstly, respectively determining the positions of a vertex at the front surface and a vertex at the rear surface of a lens to be measured through a differential confocal and fixed-focal principle and obtaining position coordinates positioned two times by a differential confocal measuring head; and then calculating the central thickness of the lens by utilizing a ray tracing formula. Meanwhile, an annular pupil is introduced into a measuring optical path to shade a paraxial ray and form a hollow measuring light cone, which lightens the influence of aberration on a measuring result. The device comprises a beam splitting system, an objective lens, a differential confocal system, a length measuring system and a mobile guide rail; wherein the beam splitting system, the objective lens and the lens to be measured are sequentially placed in an emergent ray direction of a collimation light source and the differential confocal system is placed in the reflecting direction of the beam splitting system. By utilizing the differential confocal light cone to accurately position the surface of the lens, the invention realizes the non-contact high precision measurement of the central thickness of the lens.

Geocomposite articles that can provide a barrier against high conductivity water e.g., ocean water, are described and their method of manufacture, for waterproofing surfaces that contact high conductivity water. The geocomposite article mat includes a woven or non-woven geotextile sheet or mat containing a powdered or granular partially cross-linked acrylamide/acrylate/acrylic acid copolymer across its entire major surface(s). The powdered or granular copolymer has an unexpectedly high free-swell when hydrated with High Conductivity water, such as ocean water. A liquid-impermeable cover sheet is adhered to the upper major surfaces of the filled copolymer-carrying geotextile to provide a primary high conductivity water barrier layer that, if ruptured, is sealed by the swell of an underlying layer of water-insoluble, partially cross-linked acrylamide/acrylic acid copolymer.

The invention relates to method and device for measuring an optical axis and a gap of a lens group by a differential confocal internal focusing method, belonging to the technical field of optical precision measurement. The method comprises the following steps of: firstly accurately regulating the optical axis of the measured lens group by combining an internal focusing objective with an autocollimation method; then realizing the high-accuracy positioning of each surface of the measured lens group by utilizing a differential confocal focus-fixing principle, and acquiring a numerical aperture angle of a differential confocal light cone positioned on each positioning point; finally sequentially calculating each gap of the measured lens group by utilizing a ray tracing recursion formula, and also leading an annular optical pupil into a measuring optical path to form a hollow measuring light cone so as to reduce the influence of astigmation on a measurement result. The invention combines a differential confocal technology with an internal focusing technology, has high measurement accuracy, high speed, simple system structure, long working distance, no need for disassembling the measured lens group in a measuring process, and the like and can be used for the non-contact high-accuracy measurement of the optical axis and the gap of the lens group.

The invention discloses a drone-based non-contact high slope surface displacement monitor method. The method comprises following steps of: burying a monitor pile; burying a monitor base point, and determining spatial coordinates of the monitor base point; determining an aerial photographing region according to a high slope, a position of the monitor point and a position of the monitor base point,and collecting images of the aerial photographing region by using a drone; processing images collected by the drone, and calculating spatial coordinates of a center point of each monitor pile according to a camera parameter and the spatial coordinates of the monitor base point; performing aerial photographing in the aerial photographing region for many times, acquiring spatial coordinates of the center point of the monitor pile each time, calculating displacement change each time, performing surface reconstruction on the high slope according to displacement change each time, and generating a displacement cloud picture; and evaluating stability of the high slope quantitatively according to displacement change. The method improves monitor efficiency of the high slope remarkably, saves cost,and reaches monitor accuracy of a construction monitor requirement.

The invention belongs to the technical field of optical precision measurement and relates to an optical axis and thickness measurement method and a device of a differential confocal internal-focusing lens. By means of an internal-focusing objective lens, the method utilizes an auto-collimation method to adjust the optical axis of the lens precisely; utilizes the characteristic that when a differential confocal response curve passes the absolute zero point, the vertex of a differential confocal light cone and the surface vertex of the lens to be measured can coincide to achieve the precise positioning of the surface vertex of the lens and to obtain a numerical aperture angle of emergent lights in two-time positioning of the vertex of the differential confocal light cone; and utilizes a ray tracing formula to calculate the central thickness of the lens. Meanwhile, an annular pupil is introduced during the light path measurement, the influence of aberration on a measurement result is reduced. By combining differential confocalization with internal focusing for the first time, and providing optical axis and thickness measurement principle of the differential confocal internal-focusing lens, the lens optical axis and thickness measurement method and device of the differential confocal internal-focusing lens has the advantages of being high in measurement speed, high in precision, high in sensitivity, simple in structure and long in working distance, and is applicable to non-contact high-precision measurement of the light axis and the central thickness of lens.

The present invention relates to an unmanned aerial vehicle tracking motion system and method based on binocular vision distance measurement, belonging to the technical field of unmanned aerial vehicle tracking. The problem is solved that non-cooperative moving objects cannot be tracked in the air in the prior art. The system comprises: an unmanned aerial vehicle platform configured to obtain moving object images in real time through a binocular camera to perform standard image tracking and binocular three-dimensional matching, obtain space three-dimensional coordinates of the moving objects and perform automatic approaching and tracking of the moving objects; and a ground control station configured to guide the unmanned aerial vehicle platform to primarily approach to the moving objects to receive and display the moving object images sent by the unmanned aerial vehicle platform and perform primary calibration for a target area in the images. The unmanned aerial vehicle tracking motionsystem and method employs a binocular camera to perform three-dimensional location of the target, has non-contact high-frequency measurement, is simple to implement and high in timeliness, can control the unmanned aerial vehicle to accurately and automatically approach to and track non-cooperative moving object through the position information of the moving object obtained in real time so as to provide basis for the processing of the moving object by the unmanned aerial vehicle in future.

The multiple-section synthesizing 3D profile measuring method adopts a conveying unit to translate object to be measured in constant speed, several optically cutting 3D measuring sensors to constitute a 3D array for the measurement of the object, and a computer to synthesize the cross section data of the sensors to perform real-time in-situ measurement of 3D object profile sizes in doubled equivalent cross section measurement speed. The present invention may be used in the non-contact high-speed in-situ measurement of various object profile.

The invention discloses a non-contact high-voltage line electroscope, comprising a capacitance-type sensor, a signal processing module, a singlechip, an indication module, a voice module, a signal transmission module and an alarm. The capacitance-type sensor is used for monitoring a high-voltage line electric field, generating a voltage signal and transmitting the voltage signal to the signal processing module; the signal processing module converts the received voltage signal into a digital signal and transmits the digital signal to the singlechip; the singlechip processes the received digital signal, transmits a charged or uncharged state indication signal to the indication module, transmits a voice signal to the voice module, transmits an alarm signal to an alarm module and transmits a transmission signal to the signal transmission module; the indication module displays the charged or uncharged state through a light-emitting diode; the voice module gives voice prompt according to the voice signal; the signal transmission module transmits the received transmission signal to a console; the alarm gives an alarm after receiving the alarm signal. The non-contact high-voltage line electroscope uses the singlechip as a detection and control core, provides both vision and voice prompts when giving electricity checking caution, and has steady system signal and high reliability.

The invention relates to a non-contact high-precision shaft current measuring device. The non-contact high-precision shaft current measuring device comprises a first magnetic concentrating ring M1, a second magnetic concentrating ring M2, a first magnetic sensor MS1, a second magnetic sensor MS2, a signal comprehensive processing circuit board, a DSP digital signal processing circuit board and a local display terminal. The first magnetic sensor MS1 and the second magnetic sensor MS2 measure magnetic field signals of an air gap between the first magnetic concentrating ring M1 and the second magnetic concentrating ring M2 and output voltage signals representing the magnitude of the magnetic field. After signal modulation by the signal comprehensive processing circuit board and the DSP digital signal processing circuit board, the current signal of a tested shaft is displayed on the local display terminal. The shaft current measuring device is high in interference resistance, high in resolution, high in detection precision, good in linearity and high in response speed; the requirements of tested current sources with various shape sizes are met, the mounting and dismounting are simple, the maintenance is convenient, the device is especially suitable for weak current signal measurement of a ship propulsion shaft, a motor rotor shaft or other large-diameter rotation shafts, and the general applicability is realized.

The invention discloses an online wheel set dimension detecting method and device based on two kinds of sensors. The device comprises the first laser displacement sensor, the eddy current displacement sensor and the second laser displacement sensor which are sequentially arranged on the inner side of a track in the advancing direction of a train. The third laser displacement sensor at the outer side of the track and the second laser displacement sensor are symmetrical about the track between the third laser displacement sensor and the second laser displacement sensor. The eddy current displacement sensor is located under a vertex of a rim. According to the method, the two laser displacement sensors arranged symmetrical about the track obtain contour lines of wheel treads through probing, and the height and the thickness of the rim are calculated out according to the geometrical relationship by means of the extracted contour lines of the treads; the two laser sensors located on the inner side of the track and the eddy current sensor obtain coordinates of three points on the circumference of the vertex of the rim through probing, and the diameter of wheels is calculated according to the geometrical relationship in combination with the height of the rim. The method and the device have the advantages that the measurement principle is simple, practicality is high, cost is low, and non-contact high-precision measurement can be achieved.

The invention discloses a rail vehicle wheel set size measuring instrument which comprises a body, a module slide guide rail arranged at the front part of the body, a motor driver coaxially connectedto the module slide guide rail, a laser displacement sensor fixed to the module slide guide rail, a grating scale which is parallelly arranged on the module slide guide rail, a ranging sensor arrangedat the back part of the body, a positioning rod arranged at the lower part of the body, an electromagnet arranged at the lower part of the body, and a power supply which is arranged in the machine and supplies power to the measuring instrument. The measuring instrument of the invention is based on the principle of laser triangulation, and the non-contact high-precision measurement of parameters such as a wheel tread shape, a rim thickness, a rim height, a qR value, a wheel wear amount, a wheel diameter and a wheel set inner distance can be achieved. The present invention also provides a method of determining an optimal turning amount by using the measuring instrument.

The invention discloses a contact high-speed mechanical seal testing device which comprises a bench, a main test chamber, a high-speed torque gauge coupler, a drive motorized spindle, and a cooling and lubricating liquid supply system, wherein the main test chamber, the high-speed torque gauge coupler and the drive motorized spindle are mounted on the bench; the cooling and lubricating liquid supply system is mounted in the bench; the main test chamber and the drive motorized spindle are connected through the high-speed torque gauge coupler; and the drive motorized spindle is connected with the cooling and lubricating liquid supply system. The contact high-speed mechanical seal testing device can perform rotational speed and pressure tests within a greater range, tests performance of mechanical seal at a superspeed, increases mechanical seal test difficulty, and shortens cycles of tests and research and development.

The invention belongs to the testing field of electric power equipment and discloses a non-contact high-voltage circuit breaker operation characteristic measurement method based on the spatial high-frequency technology. Through collecting change time?points of high-frequency?signals generated by a circuit breaker contact arc when the circuit breaker is switched on and switched off and change time points of switching on and switching off coil voltage when the circuit breaker is switched on and switched off in the power-on condition, measurement of parameters such as switching on and switching off time of the high-voltage circuit breaker, switching on and switching off inter-phase imbalance, and switching on and switching off arcing time of the circuit breaker can be realized quickly, conveniently, safely and in a way in no need of power off.

Produce metal particles offering high purity and uniform granular shape and size: by forming a combustion chamber comprising an injector nozzle for mixture gas of oxygen and hydrogen, an ignition device and a material metal feeder in the upper space of a high-pressure water tank filled with inert gas; igniting inside the combustion chamber via the ignition device the injector nozzle for mixture gas of oxygen and hydrogen and melting (vaporize) the material fed by the material metal feeder; and then causing the produced molten metal droplets to contact high-pressure water and let the resulting metallic particles to precipitate in water.

The invention discloses a non-contact dip angle measuring device and a method thereof. The non-contact dip angle measuring device comprises a distance measuring module, a dip angle measuring module, a microprocessor module, a display module, a power supply module and a main body, wherein the distance measuring module comprises two independent laser distance measuring units which send two parallel measuring paths from the measuring reference surface of the main body when measuring, and the two paths are sent to characteristic lines of a target to be measured; the distance measured by the two laser distance measuring units and the dip angle of the main body measured by the dip angle measuring module are processed by the microprocessor module to be output to the display module; two distance values can be equalized by adjusting the inclining angle of the main body; in addition, the main body, the two measuring paths and the characteristic lines of the target to be measured form a parallelogram; and the dip angle displayed by the display module is equal to the dip angle of the target to be measured. The non-contact dip angle measuring device and the method thereof, both provided by the invention, can conveniently carry out non-contact high-precision dip angle measurement for the target to be measured, particularly the target which is in a long distance, cannot be easily reached by human beings or has an imperfect measuring visual angle.

The invention discloses a non-contact high-precision calibration method of a tool coordinate system of a single robot, comprising the following steps: first, calibrating a fundamental coordinate system of a robot; second, calibrating a workpiece coordinate system of the robot. The calibration employed by the invention is that a tool sleeve can perform a significantly complete calibration on the tool coordinate system of the robot. The calibration is that the tool sleeve can ensure repeatability of each operation, so as to furthest reduce errors generated by man-made calibration. The method provided by the invention, the non-contact high-precision calibration method of the fundamental coordinate system of the robot, and the non-contact high-precision calibration method of a tool coordinate system of the single robot are cooperated for application, so that basic technical basis is provided to realize accurate transformation of the robot pose, parameterization programming of the robot, high-precision coordination work of a robot group and pose transformation of the robot, resettlement of the robot system, multi-station program share of the robot and locus program of the robot and the like.