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254results about How to "Avoid unstable factors" patented technology

On-line detection system and detection method for pipe (bar) ultrasonic phased array

The invention provides an on-line detection system and an on-line detection method for pipes or bars ultrasonic phased array. The method comprises the following steps of: arranging a plurality of concave surface phased array energy converter probes on planes which are perpendicular to the center lines of the pipes or bars and at the position which forms a certain included angle with the center lines of the pipes or bars at the peripheries of the pipes or the bars; generating an electronic control sound field focused by the phased arrays by utilizing the concave surface phased array energy converter probes; and switching continuously and quickly by utilizing a high-voltage switch array, a multi-channel phased array transmit-receive system and a control system through a high-voltage switch array circuit, and controlling different array elements of the concave surface phased array energy converter to transmit and receive at different moments, so that phased array focusing acoustic beams rotate in the pipes or bars at high speed to realize dynamic focusing and scanning. By the system and the method, the 360-degree full-coverage scanning of the pipes or bars can be realized under the condition that the concave surface phased array energy converter probes are not moved, longitudinal and traverse defects can be scanned and detected, and the detection speed is improved greatly while the detection accuracy is improved.
Owner:INST OF ACOUSTICS CHINESE ACAD OF SCI +1

Instrument for detecting interlaminar cohesive shear strength of road surface after being soaked

The invention discloses a device for detecting the interlaminar cohesive shear strength of a road surface after being soaked, comprising a lower base, a soaking tank, a clamping mechanism used for fixing a test piece, a movable plate and a loading pressure head, wherein the soaking tank is provided with a lower chuck used for fixing the test piece, the soaking tank body is connected with a constant-temperature oven by a thermal insulation pipe to form a constant-temperature water circulation system, the test piece is fixed between an upper chuck and the lower chuck and is completely soaked in a water body, the upper chuck is connected with the movable plate by virtue of a rolling shaft, the loading pressure head arranged above the movable plate is connected with a loading device, and a control system of the loading device realizes data acquisition and control. The device provided by the invention has the advantages that the mechanical structure is reasonable, the degree of automation is high, the operation is simple and convenient, and the interlaminar cohesive shear strength of a road surface after being soaked can be effectively detected, thus the device is applicable to performance study, indoor test and engineering detection on the interlaminar structure of the road surface.
Owner:TRAFFIC SCI & TECH INST JIANGXI PROV +1

Chlorination reaction temperature control method, system and equipment

The invention discloses a chlorination reaction temperature control method, a system and equipment. The method comprises the following steps of according to a preset target control curve, determiningthe starting moment of a cooling valve by utilizing the temperature in a current kettle, a corresponding preset temperature threshold value, a temperature change rate in the current kettle and a corresponding preset temperature change rate threshold value, and controlling the cooling valve to be started at the determined moment so as to carry out cooling treatment on the reaction kettle; accordingto a preset rule, determining the closing moment of the cooling valve by utilizing the temperature in the current kettle, the corresponding preset temperature threshold value, the temperature changerate in the current kettle and the corresponding preset temperature change rate threshold value, and controlling the cooling valve to be closed at the determined moment. Based on the chlorination reaction temperature control method, the corresponding valve can be adjusted automatically according to the preset target control curve, and the temperature in the reaction kettle at each reaction stage can be controlled within a required process error. Meanwhile, the control precision is improved, and the overshoot amount is reduced.
Owner:HANGZHOU HOLLYSYS AUTOMATION

Aloft traveling device for ascending height during hot-line work

The invention relates to an aloft traveling device for ascending a height during hot-line work. The aloft traveling device comprises a rack body, traveling wheels and connecting holes, wherein the traveling wheels are symmetrically arranged at the upper end of the rack body, and are used for supporting the rack body; and the connecting holes are formed at the two ends of the rack body. The aloft traveling device is characterized by also comprising a seat, a pair of limiting devices, a lifting device, a speed regulation brake device and an anti-falling device, wherein the limiting devices are symmetrically arranged at the lower ends of the traveling wheels; the lifting device is matched with the limiting devices; and the speed regulation brake device is used for controlling the traveling wheels. Instable factors of manual speed control are avoided, the safety and autonomy of an operator are ensured, and the emergency operation of the operator encountering a special condition is facilitated; and when a rope ladder head slides downwards from a high altitude on a conductive ground wire with a great slope, speed can hardly be controlled if only the aloft operator grasps the wire with hands, and particularly in rough topographies such as mountains and canyons, the speed cannot be controlled by utilizing a rope on the ground.
Owner:STATE GRID CORP OF CHINA +1

Cooling device for dish-type solar concentrating photovoltaic cell panel

The invention relates to a cooling device for a dish-type solar concentrating photovoltaic cell panel and belongs to the technical field of cooling of a concentrating photovoltaic cell panel. The invention aims to solve the problems that the conventional concentrating photovoltaic cell panel cooling technology is difficult to meet the requirement for temperature control and is poor in heat conductivity, so that the solar power generating efficiency is reduced. A heat dissipation panel of the cooling device is a hollow heat dissipation panel; fixed brackets are hollow brackets; a heat pipe is arranged in each fixed bracket; the upper end of each heat pipe is communicated with the heat dissipation panel; the hollow part of the heat dissipation panel is used as the evaporating ends of the heat pipes; the lower ends of the heat pipes are condensing ends; metal foams are sintered in the cavities between the heat pipes and the corresponding fixed brackets; the metal foams are filled with solid-liquid phase-change materials; openings of the upper ends of the fixed brackets are sealed by sealing elements; a layer of heat pipe wick is arranged on the inner wall of each heat pipe. The cooling device is used for heat dissipation of the dish-type solar concentrating photovoltaic cell panel.
Owner:CHINA UNIV OF PETROLEUM (EAST CHINA)

Door slot gap measuring device for elevator landing door

The invention discloses a door slot gap measuring device for an elevator landing door. The door slot gap measuring device comprises a first opposite-opening plate (11), a second opposite-opening plate (12), a drive mechanism (20), a sensor (30) and a display device (40), wherein the first opposite-opening plate (11) and the second opposite-opening plate (12) are oppositely arranged and provided with inserting parts, the drive mechanism (20) is connected with the first opposite-opening plate (11) and the second opposite-opening plate (12) and used for driving the first opposite-opening plate (11) and the second opposite-opening plate (12) to relatively move, the sensor (30) is installed on the inserting parts / the inserting part of the first opposite-opening plate (11) and / or the second opposite-opening plate (12), and the display device (40) is connected with the sensor (30) and used for displaying the force value transmitted by the sensor (30). The door slot gap measuring device is compact in structure and simple in design, force of 150 N can be tested through gap adjustment, instable factors caused when people exert force are avoided, and the authenticity of test data is improved; and meanwhile the door slot gap measuring device is convenient to use, the door slot gap measurement can be achieved through simple operation, and a more reliable technique guarantee is provided for testing and detecting.
Owner:XIAN SPECIAL EQUIP INSPECTION INST

Releasing tool

The invention discloses a releasing tool which comprises a joint, a core tube, a spring, a jacking sleeve, a connecting barrel, clamping tile, a sealing device, a guiding shoe, a parent lock ring, a limiting barrel and a sealing barrel. A first end of the core tube is hermetically and fixedly connected with the joint, the connecting barrel sleeving outside the core tube is fixedly connected with the joint, an annulus is formed between the connecting barrel and the core tube, the spring, the jacking sleeve, the clamping tile and the sealing device are sequentially sleeved on the core tube, the clamping tile can axially slide along the core tube, is provided with a left-hand sawtooth external thread, and is divided into multiple portions circumferentially, the end portion of the clamping tile is provided with an inner bevel, the core tube is provided with a bevel boss corresponding to the inner bevel, a first boss is arranged on the core tube, the inner surface of the clamping tile is provided with a second boss corresponding to the first boss, the sealing device used for sealing between the core tube and the sealing barrel is sleeved at a second end of the core tube, the second end of the core tube is connected with the guiding shoe, the parent lock ring is arranged in the limiting barrel and can axially slide, the sealing barrel and the limiting barrel are fixedly connected, and the parent lock ring is provided with a left-hand sawtooth internal thread. The releasing tool is easy to assemble and operate.
Owner:TIANJIN ANTON PETROLEUM MACHINERY MFG

High pressure steam pipe cutting device for treating carbon tetrachloride

The invention relates to a high pressure steam pipe cutting device for treating carbon tetrachloride. A workpiece fixture is fixedly connected to the left side of the upper part of a fixing plate; a rotary platform is rotatably connected to the upper part of a moving trolley through a rotary shaft fixedly connected to the lower part of the rotary platform; a support pillar is fixedly arranged on the front side of the upper part of the rotary platform; a vertical slideway is arranged on the front side of the support pillar; a winch is fixedly arranged on the top part of the support pillar; a mechanical arm is formed by a fixing arm and a sliding arm; a cutting gun nozzle is fixedly connected to the lower part of the left end of the sliding arm; a reel is fixedly connected to the right end of the fixing arm; two sliding chutes II extending vertically and having T-shaped cross sections are arranged on one side, close to the slideway, of a sliding block; two slide rails with T-shaped crosssections are slidably assembled into the two sliding chutes II; the upper ends and the lower ends of the two slide rails are fixedly connected with the upper end and the lower end of the slideway; and two lubricating oil filling devices corresponding to the two sliding chutes II are fixedly arranged on the front side of the sliding block. The device is convenient in operation process, high in operation efficiency, and suitable for cutting circular workpieces.
Owner:XUZHOU UNIV OF TECH

Device and method for automatically calibrating performance parameters of CCD (Charge Coupled Device)

The invention relates to a device and a method for automatically calibrating performance parameters of a CCD (Charge Coupled Device). The device for automatically calibrating the performance parameters of the CCD comprises a control module, a pulse laser, an integrating sphere, a mechanical shutter, a detected CCD detector and a main control computer which are sequentially connected, wherein the control module comprises a clock pulse generating circuit, a pulse width automatic regulating circuit, an output pulse drive capability amplifying circuit, a power supply module, a shutter control circuit and a CCD trigger signal output circuit, the pulse width automatic regulating circuit, the output pulse drive capability amplifying circuit and the power supply module are sequentially connected, the shutter control circuit is respectively connected with the pulse width automatic regulating circuit and the mechanical shutter, and the CCD trigger signal output circuit is respectively connected with the pulse width automatic regulating circuit and the detected CCD detector; the power supply module comprises a laser drive power supply and a power supply temperature acquisition system, and the power supply module is also connected with the pulse laser and the pulse width automatic regulating circuit. The device and the method for automatically calibrating the performance parameters of the CCD, provided by the invention, have the advantages of high stability, high accuracy, high confidence coefficient and simpleness in operation.
Owner:XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI

Blast furnace slag slurry conveying conversion device not liable to be damaged

The invention discloses a blast furnace slag slurry conveying conversion device not liable to be damaged and belongs to the technical field of blast furnace iron smelting equipment. The blast furnace slag slurry conveying conversion device is used for conveying blast furnace slag slurry to different filter pools. According to the technical scheme, a concrete-poured foundation platform is located between a slag ditch and the two filter pools. A slag dividing pipeline is located on the foundation platform. A main pipeline is arranged at one end of the slag diving pipeline, and a slag inlet of the main pipeline is connected with the slag ditch. Two branch pipelines are arranged at the other end of the slag diving pipeline. Slag outlets of the two branch pipelines are connected with slag inlets of the two filter pools correspondingly. Gates are mounted at slag inlets of the two branch pipelines correspondingly. A lifting platform is arranged above the gates. Two lifting mechanisms are mounted on the lifting platform and connected with the upper ends of the two gates correspondingly. The structure is simple, mounting is convenient, the using effect is good, the manufacturing cost is low, the spare part cost is saved, the overhaul cost is reduced, the whole device operates stably, normal operation of a blast furnace is guaranteed, and significant economic benefits are achieved.
Owner:TANGSHAN IRON & STEEL GROUP +1

Reagent for measuring cadmium and preparing method thereof

The invention relates to a detecting technique of heavy metal cadmium, in particular to a reagent for rapidly detecting the cadmium and a preparation method thereof. The reagent consists of a reagent A and a reagent B, wherein, by weight proportion, the reagent A consists of 50-200 parts of visualization reagent, 100-1200 parts of acidity regulating reagent and 100-800 parts of sensitizing reagent; and the reagent B consists of 20-150 parts of buffering agent, 10-80 parts of masking reagent 1 and 30-100 parts of masking reagent 2. By adopting the invention, the analysis procedures can be simplified, such as operations of weighting, solution allocation, and the like, can be omitted, the advantages of convenience and the rapidness can be brought, the personal errors can be reduced, and the accurate result can be obtained by the operation by persons who are not analyst. The validity period of the reagent A is more than six mouths after being tightly stored at normal temperature; and the reagent B belongs to solid powder capsules, which avoids the instability, and the like, of the liquid reagent, thereby the validity period is more than eight mouths after being tightly stored at the normal temperature.
Owner:SHENYANG INST OF APPL ECOLOGY CHINESE ACAD OF SCI

Charging tray full-automatic labeling and sorting device

The invention provides a charging tray full-automatic labeling and sorting device which comprises a feeding system, a charging tray identifying, labeling and verifying system, a sorting and discharging system, a conveying belt assembly and an industrial personal computer. The feeding system is used for receiving charging trays and conveying the charging trays to the charging tray identifying, labeling and verifying system. The charging tray identifying, labeling and verifying system is used for identifying codes of the charging trays, printing client labels according to the codes, and pastingthe client labels to the charging trays. The charging tray identifying, labeling and verifying system is also used for verifying the client labels. The sorting and discharging system is used for receiving the charging trays conveyed by the charging tray identifying, labeling and verifying system, and sorting the charging trays which are verified to be wrong and correct by the charging tray identifying, labeling and verifying system. The conveying belt assembly is used for receiving the charging trays from the charging tray identifying, labeling and verifying system, and conveying the chargingtrays which are verified to be correct to the sorting and discharging device. The industrial personal computer is used for sending control commands to the feeding system, the charging tray identifying, labeling and verifying system and the sorting and discharging system.
Owner:航天科工智能机器人有限责任公司
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