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120results about How to "Not affected by vibration" patented technology

Integrated online monitoring instrument for monitoring ammonia escape during denitration

The invention discloses an integrated online monitoring instrument for monitoring ammonia escape during denitration. The instrument comprises a case, a gas inlet, a heating pretreatment device, a sampling and calibration device, an ammonia analysis device, a data processing and display device, a temperature control device and a power supply and external interface device, wherein the heating pretreatment device comprises a heater, a high-temperature ball valve and a secondary filter; the data processing and display device comprises a CPU (central processing unit), a data transmission module and a liquid crystal display screen; the sampling and calibration device comprises a sampling pump, a calibration electromagnetic valve and an interference electromagnetic valve; the input end of the high-temperature ball valve is connected with an external tracing pipe through a pipeline and the gas inlet, and the output end of the high-temperature ball valve is connected with the input end of the secondary filter through a pipeline; the output end of the secondary filter is connected with the ammonia analysis device through a pipeline, and the ammonia analysis device is connected with the sampling pump. The monitoring instrument can be used for measuring various gases and effectively prevent mutual interference of components and is high in measurement sensitivity and free of interference of background gas, and the response time is short.
Owner:杭州绰美科技有限公司

Deformation monitoring method for existing railway line

The invention relates to a deformation monitoring method for the existing railway line, which comprises the following steps: (1) selecting right types of total stations and prisms; (2) carrying out point distribution on a line required to be measured, and installing the prism at each measuring point; (3) through site survey, burying a sufficient quantity of datum points and station points convenient to observe the prisms; (4) carrying out real-time measurement on the prisms through the total stations arranged at the station points so as to obtain the three-dimensional coordinate of each prism; and (5) through comparing the three-dimensional coordinates of the prism during different time periods, calculating the deformation value and change rate of the line during the period. The invention is a deformation monitoring method for the existing railway line, which is scientific in design and easy to implement. By using the method disclosed by the invention, the data of settlement and horizontal displacement of the existing railway line in operation can be accurately acquired under the premise of not affecting the operation of the existing line, thereby guaranteeing the necessary monitoring frequency; and the acquired data represents the deformation of the line during all time periods, and finally, the purpose of carrying out real-time monitoring on the existing railway line and guaranteeing the safe operation of trains is achieved.
Owner:CHINA RAILWAY DESIGN GRP CO LTD

Forced ventilation one-way valve for automotive engine

The invention discloses a forced ventilation one-way valve for an automotive engine, of which the structure is that: a valve cap and a valve seat are connected in a sealing mode and a valve cavity is formed between the valve cap and the valve seat; one side of the valve seat close to the valve cap is provided with a first spoke and a first hub, and one side of the valve cap close to the valve seat is provided with a second spoke and a second hub; a concave pit is formed at the outer end of the second hub; a valve block and a stopper are arranged in the valve cavity; a first mounting hole and a ventilation hole are formed on the stopper; two anti-rotation posts are arranged on one side face of the stopper; the valve block is made of an elastic material and a second mounting hole is formed on the valve block; the first hub is inserted into the first mounting hole, and the two anti-rotation posts are spanned on two sides of the width direction of any first spoke., so that the stopper is adhered to the end face of the first spoke close to the valve cap; the valve block penetrates the first hub through the second mounting hole and then is adhered to the stopper and shields the stopper, so the valve cavity is divided into two cavities; the first hub is inserted into the concave pit; and the external end of the second hub is contacted with a central region of the valve block. The forced ventilation one-way valve for the automotive engine cannot be influenced by vibration of the engine, and the opening / closing state of the one-way valve is stable.
Owner:徐连奎

Large-scale road maintenance equipment for detecting looseness of rail fastener and corresponding detection method

The invention provides large-scale road maintenance equipment for detecting looseness of a rail fastener. The equipment comprises a fastener looseness detection device and is characterized in that thefastener looseness detection device comprises a laser range finder, a vibration compensation device, a microcomputer control system, a video recognition system and a positioning synchronization system, the laser range finder is connected with the microcomputer control system, and the microcomputer control system is also connected with the video recognition system, the positioning synchronizationsystem and the vibration compensation device. Laser measurement is adopted, meanwhile, a vibration compensation system is arranged, the vibration compensation device measures vertical acceleration ofa detection beam through an inertia packet in the measurement beam, adverse factors such as gravity components and the like are removed, and secondary integration is carried out on the acceleration toobtain a displacement value. The vibration compensation device can compensate the influence of the vibration displacement of a train without being influenced by the vibration of the train, and a result is more accurate.
Owner:CRCC HIGH TECH EQUIP CORP LTD

Method for measuring vertical dynamic disturbance of high-speed railway bridge based on unmanned aerial vehicle

ActiveCN109813510AFlexible and easy to operateFlexible and easily disturbed high-precision measurementElasticity measurementMeasurement pointUncrewed vehicle
The invention relates to a method for measuring the vertical dynamic disturbance of a high-speed railway bridge based on an unmanned aerial vehicle, which is characterized in that measuring points arearranged on a high-speed railway bridge to be measured. A camera is installed on the unmanned aerial vehicle, and markers are arranged on the unmanned aerial vehicle. A total station instrument is arranged on the ground. The method comprises the following steps: controlling the unmanned aerial vehicle to fly to a set position on a horizontal plane of the measuring points and a vertical line vertical to the measuring points, shooting and imaging the measuring points on the high-speed railway bridge to be measured by using the camera on the unmanned aerial vehicle according to a set time interval at the set position, and synchronously measuring the position coordinates of markers on the unmanned aerial vehicle according to the same set time interval as the camera on the unmanned aerial vehicle by using the total station instrument; correcting the image coordinates of the measuring points by using the data output by the total station instrument and the inertial navigation of the unmannedaerial vehicle, and obtaining the vertical dynamic disturbance of the high-speed railway bridge based on the corrected image coordinates of the measuring points. The method is not influenced by environmental vibration, can achieve flexible and easy-to-operate high-precision measurement of the dynamic disturbance of the high-speed railway bridge, and has simple and efficient measurement process.
Owner:SUN YAT SEN UNIV +1

Method for measuring vertical dynamic disturbance of high-speed railway bridge based on unmanned aerial vehicle

ActiveCN109813509AFlexible and easy to operateFlexible and easily disturbed high-precision measurementElasticity measurementMeasurement pointShoot
The invention relates to a method for measuring the vertical dynamic disturbance of a high-speed railway bridge based on an unmanned aerial vehicle, which is characterized in that measuring points arearranged on the high-speed railway bridge to be measured. A camera is arranged on the unmanned aerial vehicle, more than three markers are arranged on the unmanned aerial vehicle, two cameras are arranged on the ground below the shooting position of the unmanned aerial vehicle to form a binocular stereoscopic vision system, and the two cameras in the binocular stereoscopic vision system shoot theunmanned aerial vehicle so as to monitor displacement changes of coordinates of all marker points on the unmanned aerial vehicle under a world coordinate system. The method comprises the following steps: correcting images shot by the cameras on the unmanned aerial vehicle according to the displacement and attitude change of the unmanned aerial vehicle obtained by the binocular stereoscopic visionsystem, and obtaining the vertical dynamic disturbance of the high-speed railway bridge based on the image coordinates of the corrected measuring points. The method is not influenced by environmentalvibration, can achieve flexible and easy-to-operate high-precision measurement of the dynamic disturbance of the high-speed railway bridge, and has simple and efficient measurement process.
Owner:SUN YAT SEN UNIV +1

Novel micro aero-engine combustion chamber

The invention provides a novel micro aero-engine combustion chamber, and relates to the technical field of micro aero-engines. Based on the defects that an oil way structure of a traditional micro aero-engine combustion chamber is long in distance, an oil way is prone to deform due to external action and the like, the novel micro aero-engine combustion chamber adopts a spiral evaporation pipe structure, so that the oil way stability is enhanced, and the combustion efficiency is improved; based on the factors that the traditional micro aero-engine combustion chamber is poor in overall fixing effect, and the position of a flame tube is prone to be unstable under the high-temperature effect, the novel micro aero-engine combustion chamber adopts a flame tube fixing device structure so that theflame tube can be effectively fixed, and position deviation of the flame tube caused by vibration in the working process is prevented, and the flame tube can be prevented from being influenced by vibration during working; a double-layer wall surface structure of the flame tube is adopted, and the space between the wall surfaces is filled with porous media so that the effective damping effect canbe achieved; and meanwhile, the flame tube can be cooled to a certain degree, so that the wall surface cooling effect is achieved, and the service life of the wall surfaces of the flame tube is prolonged.
Owner:NORTHWESTERN POLYTECHNICAL UNIV

Automatic integral equipment for processing intake manifolds

The invention discloses automatic integral equipment for processing intake manifolds. The equipment comprises a conveying track, a cold insertion device, a hot insertion device and a leak detecting device. A robot is arranged between the cold insertion device and the hot insertion device. Each of the cold insertion device, the hot insertion device and the leak detecting device comprises an upper fixture and a lower fixture. A laser code printer and an automatic intake manifold recognition area are arranged on the conveying track. An automatic code reader and an optical fiber sensor are arranged in the automatic intake manifold recognition area. The lower fixtures move up and down under the drive of air cylinders, up-down movement of the lower fixtures is positioned by guide rods, and a retractable stop rod is arranged on one side of the automatic intake manifold recognition area. The automatic integral equipment has the advantages that accuracy in insertion of copper nuts and cold insertion pipes is high, the problems of manual production feeding, low working efficiency and time and labor consumption of existing devices as well as the problem of inaccuracy in the process of hot insertion and cold insertion of the intake manifolds are solved, and automatic operation of assembly lines is realized.
Owner:SHANGHAI CHAOLU AUTOMATION EQUIP

Apparatus and method for measuring volume and volume expansion coefficient of object

The invention discloses a device for measuring the volume and the volume expansion coefficient of an object, and the device comprises a balance with a lower lifting hook, a lifting basket, a containerfor containing liquid, a heater and a temperature sensor. The balance is arranged above the container and is used for weighing the dry weight of a to-be-measured object and the weight of the to-be-measured object in the liquid; the lifting basket is hung at the lower part of the balance through the lower lifting hook and is used for placing the to-be-tested object and soaking the to-be-tested object in liquid. The device also comprises a microprocessor which is connected with the electronic balance, the heater and the temperature sensor and is used for controlling start and stop of the heater, receiving acquired data of the electronic balance and the temperature sensor and calculating and displaying the volume and the body expansion coefficient of the to-be-measured object. The inventionalso discloses a method for measuring the volume and volume expansion coefficient of gas inside a flexible package product and a method for measuring the volume expansion coefficient of a solid material. The device can simply and conveniently measure the volume and volume expansion coefficient of the object, and especially measure the gas in the object under the condition that the flexible packageproduct is not damaged.
Owner:CHANGZHOU GUANGWEI INSTR TECH

Telescoping joint sealing structure of water turbine

The invention discloses a telescoping joint sealing structure of a water turbine. The telescoping joint sealing structure of the water turbine comprises a tail water pipe flange and a rotating wheel chamber tail flange, wherein a telescoping joint consisting of a telescoping joint pressing plate and a telescoping joint flange is arranged between the tail water pipe flange and the rotating wheel chamber tail flange; the telescoping joint flange is fixedly connected to the tail water pipe flange; the telescoping joint pressing plate is fixedly connected to the telescoping joint flange; a sealingring which is in sealing fitting with the side surface of the rotating wheel chamber tail flange is arranged at an inner circle of the telescoping joint; a sealing strip is arranged between the end surface of the tail water pipe flange and the end surface of the rotating wheel chamber tail flange; and a sealing strip pressing plate which radially acts on the sealing strip is arranged at the innercircle of the tail water pipe flange. According to the telescoping joint sealing structure of the water turbine, the sealing effect is not influenced by the vibration of a rotating wheel chamber, andthe telescoping joint is effectively prevented from water leaking.
Owner:浙江富春江水电设备股份有限公司

Anti-vibration lithium battery suitable for low-temperature environment

The invention belongs to the technical field of lithium batteries, and particularly relates to an anti-vibration lithium battery suitable for a low-temperature environment, which comprises a protective shell, heat dissipation holes are formed in two sides of the protective shell, heat conduction plates are connected to the upper end and the lower end of the protective shell in a penetrating manner, and closing columns are arranged outside the heat conduction plates. The closed column is fixedly connected with the protective shell, a transmission plug is slidably connected into the closed column, a transmission rod is fixed to the side, away from the heat conduction plate, of the transmission plug, a push-pull rod is rotationally connected to the end, away from the transmission plug, of the transmission rod, and a connecting block is rotationally connected to the end, away from the transmission rod, of the push-pull rod. The protection shell, the heating shell and the heat preservation shell are additionally arranged outside the lithium battery to conduct triple heat preservation on the lithium battery, the heat dissipation condition of the lithium battery is not hindered through the heat dissipation holes, meanwhile, the temperature is monitored in a heat conduction mode, real-time dynamic temperature compensation is achieved, and therefore the lithium battery protection effect in the low-temperature state is achieved.
Owner:佛山市阳邦光电科技有限公司

Vacuum pump performance testing system and method based on cloud technology

The invention relates to a vacuum pump performance testing system and method based on the cloud technology. An air inlet pipe is connected with an air inlet of a testing cover, and a flow meter is arranged on the air inlet pipe. A vacuum meter is arranged on the testing cover, an air outlet of the testing cover is connected with a reducing connector, the reducing connector is connected with one end of a corrugated pipe, the other end of the corrugated pipe is connected with an air inlet of a to-be-tested vacuum pump, an air outlet of the to-be-tested vacuum pump is connected with an exhaust pipe, and an exhaust silencer is arranged at the tail end of the exhaust pipe. A data collection card is in communication connection with the flow meter and the vacuum meter and is used for collecting signal data of the flow meter and the vacuum meter. A cloud server is in communication connection with the data collection card and is used for receiving the signal data sent by the data collection card and storing and processing the signal data. Through the testing system, testing flexibility and testing efficiency of the vacuum pump are improved, and cost is reduced; and meanwhile, data cloud storage and cloud processing can be achieved, good transportability and universality are achieved, and the vacuum pump performance testing system and method are suitable for testing requirements of different kinds of vacuum pumps.
Owner:杭州萨莫雷斯科技有限公司

Detachable tool rest on numerically-controlled machine tool

ActiveCN103920893APrecise positioningOmit the tool setting processLarge fixed membersNumerical controlEngineering
The invention provides a detachable tool rest on a numerically-controlled machine tool, and belongs to the technical field of machines. The detachable tool rest on the numerically-controlled machine tool solves the problems that according to an existing numerically-controlled machine tool, replacement efficiency of a tool is low, and operation is complex in the replacement process. The detachable tool rest on the numerically-controlled machine tool comprises a base and a tool rest body connected to the base and used for fixing a tool, wherein the base is provided with a positioning boss, the surface of the positioning boss is provided with a clamping groove which penetrates through the side portion of the positioning boss, and the bottom of the tool rest body can be clamped into a clamping part in the clamping groove; a stopping piece and a fixing piece are arranged between the tool rest body and the base, the stopping piece enables the tool rest body to be clamped at a specific position, and the tool rest body and the base can be fixed by the fixing piece after being clamped at the specific position. The detachable tool rest on the numerically-controlled machine tool has the advantages that tool replacement efficiency is high, the tool replacement speed is high, and in-machine tool setting is not needed after tool replacement.
Owner:海德曼(上海)自动化技术有限公司
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