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479results about How to "Tested and reliable" patented technology

Bearing integrated dynamic performance test device and method

The invention relates to the technical field of bearing testing, in particular to a bearing integrated dynamic performance test device and method. The bearing integrated dynamic performance test device comprises a drive system, a transmission system, a measurement and control system, an environmental simulation system and a mechanical body structure. A motor is adopted by the drive system for driving. The measurement and control system controls the rotation speed of the motor. The transmission system is in a belt transmission mode or a coupler transmission mode. The measurement and control system is provided with a force sensor, a strainmeter, an eddy current transducer, a rotation speed sensor, a laser displacement sensor, a temperature sensor, a magnetic oil residue sensor, a pressure sensor, a flow sensor, an oil temperature sensor, an acceleration sensor and other related sensors used for bearing testing. The control system is driven in a servo mode, and is composed of a frequency converter, a hydraulic solenoid valve, a heating controller, a flow control device and a pressure control device. The environmental simulation system is adopted for simulating a real bearing testing working condition, and the performance and service life testing of the real bearing testing working condition is achieved.
Owner:DALIAN UNIV OF TECH

Device for testing powder combustion characteristics in vacuum condition

The invention discloses a testing device of gunpowder combustion characteristics in vacuum, which mainly comprises a combustion chamber, a vacuum pump, an electric heater, a thermoelectric couple, a high speed camera and a data acquisition and processing system; wherein, the vacuum pump provides vacuum environment for the combustion chamber; by controlling the heating current and the heating time of the electric heater, different ignition isoperibols can be provided for tested gunpowder samples in the combustion chamber; and the data acquisition and processing system collects the test data generated by the thermoelectric couple and the gunpowder combustion images shot by the high speed camera when the tested gunpowder samples combust, and finally obtains the combustion characteristics of the tested gunpowder samples through corresponding processing and calculation. The invention not only can be used for testing the parameters such as combustion speed, combustion surface temperature and combustion heat and the like of the gunpowder in vacuum, but also can be used for the generation and collection of the combustion products of the gunpowder under different vacuum conditions. The invention has the overriding advantages of high integration level, obtaining various parameters by one testing and low testing expenses.
Owner:XIAN MODERN CHEM RES INST

Water conveyance tunnel with prestressed composite lining for shield tunnelling

The invention provides a water conveyance tunnel with a prestressed composite lining for shield tunnelling. The tunnel comprises an ordinary reinforced concrete outer lining (1) which is formed by shield construction and is an assembled segment ring, wherein segments on the same ring are connected by connecting bolts (2); dowel bars (3) are installed in hand holes on the assembled segment ring; concrete is directly poured on the outer lining (1) to form an inner lining (5); shear keys (6) are formed in such a manner that concrete is filled in the hand holes of the outer lining; and the inner lining (5) and the outer lining (1) are combined via the dowel bars (3) and the concrete shear keys (6) to form a composite lining structure. Thus, the defects of great construction difficulty, long construction period and higher investment caused by the separated pressure pipeline water conveyance scheme for shield tunnelling are overcome. The technical problems of high head, high flow, high load and possibility of endangering the tunnel safety due to seepage of underground water, which are encountered when the soft soil layer of the riverbed is tunnelled in the shield tunnelling construction of the Yellow River crossing tunnel, are solved. Besides, the invention reduces the project investment and has obvious social benefits.
Owner:CHANGJIANG SURVEY PLANNING DESIGN & RES

Carbon fiber gas cylinder detection line and carbon fiber gas cylinder detection method

The invention discloses a carbon fiber gas cylinder detection line and a carbon fiber gas cylinder detection method. The detection line includes, in a front-to-back arrangement manner, a water pressure test apparatus, a water pressure auxiliary test apparatus and an air tightness test apparatus. The water pressure test apparatus includes a test rack, a test operation bench, a pressurizing apparatus, a test case installed on the test rack, and test trolleys for stably placing a plurality of to-be-tested gas cylinders. The water pressure auxiliary test apparatus includes a gas cylinder fixture, a transporting trolley, and a gas cylinder water-pouring-away and drying device. The air tightness test apparatus includes an air tightness detection apparatus and a second air supply apparatus for supplying air to the to-be-tested gas cylinders. The air tightness test apparatus is in a cabinet structure or a ground trough structure. The detection method includes the steps of 1) water pressure test; 2) water pouring-away and drying treatment; and 3) air tightness test. The detection line is reasonable in design and simple in operations, is good in use effects, and can easily and quickly complete water pressure test and air tightness test for a plurality of carbon fiber gas cylinders.
Owner:TECHN MONITORING CENT OF CHANGQING PETROLEUM EXPLORATION BUREAU

Method of testing robustness of closed loop protocol based on semantic analysis of dynamic script

The invention discloses a method of testing robustness of a closed loop protocol based on semantic analysis of a dynamic script, including steps of: building a test environment; conducting signal interaction between a smart telecontrol device and a protection device and a measuring and control device, receiving data signals coming from the protection device and the measuring and control device, and conducting information interaction with automatic testing software through a remote transmission communication protocol; using the automatic testing software to conduct output control over a tester through dynamic script language to make the protection device and the measuring and control device to send and transmit signals to the smart telecontrol device; sequentially controlling testing process of the smart telecontrol device by the automatic testing software, receiving messages delivered by the smart telecontrol device and using dynamic script to analyze the messages from the smart telecontrol device so as to produce a test report. The method makes it possible to flexibly compile and edit a test case and the test report, is universally applicable and significantly improves the testing efficiency and the correctness and reliability of the test result.
Owner:NANJING GUODIAN NANZI POWER GRID AUTOMATION CO LTD

Wiring harness stretch performance detection device

The invention discloses a wiring harness stretch performance detection device which comprises a working platform, a pull load mechanism and a clamping mechanism. The pull load mechanism comprises a cylinder. An output part is a piston rod of the cylinder. The clamping mechanism comprises two groups of clamping components. Each clamping component comprises two fixing plates. Arc grooves used for clamping wiring harness are arranged in the corresponding positions of the two fixing plates. One of the clamping components is fixedly arranged on the working platform. The other clamping component is connected with the output part of the pull load mechanism in a rigid mode and capable of moving under the action of the pull load mechanism. Due to the fact that load and release motion of the wiring harness to be detected are executed by a pneumatic system, the wiring harness stretch performance detection device is capable of being simple and direct, lower in cost, environment-friendly and free from pollution. Load speed is adjusted by a speed adjustment valve so that detection is more accurate, comprehensive, real and reliable. The clamping mechanism of the wiring harness stretch performance detection device is simple and direct in design and convenient to install and operate. Detail processing of the surface is unique. The surface of the wiring harness to be detected is not pressed and damaged due to the design of double-arc transition. The wiring harness is capable of being normally used after the wiring harness is detected so that waste is avoided.
Owner:WANXIANG QIANCHAO SHANGHAI AUTOMOTIVE SYST

Roadbed deformation monitoring model device under traffic load and experimental method

The invention discloses a roadbed deformation monitoring model device under a traffic load and an experimental method, belonging to the field of traffic engineering. According to the invention, traffic loads in different speed requirements are simulated through changing of rotation speed of a rotating wheel; the volume of traffic flow is simulated through a vertical loading device; the sedimentation of a roadbed in a model box is observed with reference to scales of the model box through photography measurement equipment. In order to facilitate observation, foundation soil is layered, color powder is laid between every two layers of foundation soil, and comparison is made according to scales on tempered glass, so as to facilitate the observation for sedimentation changes of all layers. A data acquisition unit is used for acquiring data through a soil pressure cell and an acceleration sensor that are buried in the roadbed, and the acquired data can be used for dynamic response analysis on foundation soil. According to the invention, different volumes of the traffic flow of different roads are simulated according to different loading ways and rotating speeds of the wheel, the operation is simple, convenient and practical, and the defects of indoor experimental devices for simulating the traffic load at home are overcome.
Owner:HUBEI UNIV OF TECH

Inkjet recording apparatus, test image forming method, and computer-readable medium

An inkjet recording apparatus has: a head having a plurality of nozzles which eject an ink onto a recording medium; a conveyance device which conveys the recording medium; a droplet ejection control device which controls ink ejection of the head; a test image forming device that forms a test image on the recording medium by causing the ink to be ejected from every n (where n is a natural number equal to 2 or higher) nozzles in an X direction perpendicular to a direction in which the recording medium is conveyed, and causing the ink to be ejected so as to form vertical lines forming n columns which shift by one nozzle in the X direction and each extend continuously in terms of a Y direction parallel to the direction in which the recording medium is conveyed; and a reading device which is provided on a conveyance path of the recording medium, reads in a test image on the recording medium and has an image reading structure covering a length corresponding to full width of the recording medium in a breadthways direction which is perpendicular to the direction in which the recording medium is conveyed, wherein in the test image, an arrangement pitch in the X direction of the vertical lines is equal to or exceeding a reading pitch in the X direction of the reading device, an arrangement pitch in the Y direction of the vertical lines is N times a reading pitch in the Y direction of the reading device (where N is a natural number), and an interval corresponding to variation in a conveyance of the recording medium is provided between the vertical lines in such a manner that a length in the Y direction of each of the vertical lines is less than the reading pitch in the Y direction of the reading device.
Owner:FUJIFILM CORP +1

Method for testing expansion of anode sheet of lithium ion battery

ActiveCN102636142AExpansion rate is accurateExpansion rate truly reflectsMeasurement devicesCyclic processElectrical battery
The invention belongs to the technical field of a lithium ion battery and particularly relates to a method for testing the expansion of a pole sheet of a lithium ion battery. The testing method comprises the following step of: adhering a layer of a lithium ion insulating material to an anode sheet or a separation membrane before assembling, or removing a certain area of cathode coating by using a solvent so that no lithium ion is embedded into an anode area corresponding to adhering area or the part of a cathode without a coating in a charging process. Therefore, the expansion of the anode sheet can be measured in a charging/discharging process and a circulating process in situ. Compared with the traditional anode expansion testing method, the testing method is used for accurately calculating the anode expansion in the charging/discharging and circulating processes according to the thickness difference of the same anode sheet at different positions, thereby eliminating influences caused by other factors, such as initial thickness difference among the different pole sheets; the obtained result is more accurate and the uniformity is better. The testing method not only can test the expansion rate of a dual-face area of the anode, but also can accurately test the expansion rate of a single-face area of the anode. Furthermore, the testing method provided by the invention is simple and easy to operate, is high in generality and is convenient to actually operate.
Owner:NINGDE AMPEREX TECH +1
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