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55results about How to "Improve simultaneity" patented technology

Limited space fire blast simulation and explosion pressure relief and explosion suppression experiment platform and method

The invention discloses a limited space fire blast simulation and explosion pressure relief and explosion suppression experiment platform and a method. The platform comprises an experiment cabin, an ignition system, a suppressing system, a gas distribution system, a data acquisition system, a control system, and a computer, the experiment cabin, which is a three-dimensional cabin, is provided with inhibitor nozzles reserved on the top surface and window type explosion vents, a plurality of pressure relief membrane frames with different sizes which are of square boss structures are nested through high-strength bolts to form the window type explosion vent, and in a fire blast experiment, the window type explosion vents are arranged on the sidewalls of the experiment cabin; in a flashover and backdraft experiment, the sidewalls of the experiment cabin are arranged as door type explosion venting panels, and the door width can be adjusted by a high-strength bolt nesting method. The platform and the method can be adopted to carry out fire blast and explosion suppression experiments in the limited space of a building with real dimensions under different concentration distributions, different explosion venting conditions, different ignition positions and different explosion suppression conditions, providing related experimental parameters for the creation of explosion venting parameter prediction model in limited spaces of buildings and the proposal of a highly effectively explosion suppression technique.
Owner:TIANJIN FIRE RES INST

Mechanical loading flow chamber device for co-culturing in-vitro cells

InactiveCN101942389ATo achieve the purpose of co-cultivationReach vertical spreadBioreactor/fermenter combinationsBiological substance pretreatmentsEngineeringCultured cell
The invention provides a mechanical loading flow chamber device for co-culturing in-vitro cells. The device comprises an upper flow chamber, a lower flow chamber, a permeable film, a first perfusion system and a second perfusion system, wherein the permeable film is arranged between the upper flow chamber and the lower flow chamber and used for separating the upper and lower flow chambers and two kinds of different cells can be inoculated onto the upper surface and the lower surface of the permeable film; the first perfusion system is communicated with the upper flow chamber through a first passage way; and the second perfusion system is communicated with the lower flow chamber through a second passage way. In the invention, micropores of the permeable film allow the two kinds of co-cultured cells to be connected through synapses and keep mutually permeated perfusates in the upper and lower chambers in seepage balance so that cytokines are vertically diffused. The upper and lower chambers can apply flow shear stresses onto the cells on the two sides of the film respectively, so that the two kinds of cells can bear the shear stress while being co-cultured on line respectively. The device can culture two kinds of different cells in vitro in the same environment and can apply double shear stresses in different modes onto the two kinds of cells at the same time.
Owner:BEIHANG UNIV

Simultaneous online analysis method for nitrite and nitrate in water sample and test sample treatment device thereof

The invention provides a simultaneous online analysis method for nitrite and nitrate in a water sample and a test sample treatment device thereof. The test sample treatment device has two structures, and mainly comprises a low-pressure pump, a six-way sample feeding valve, a mixer, a reactor, a sample container, an eluent container, a color developing solution container, a waste liquid container, a low-pressure anion separation column and a reduction column. An analysis instrument comprising the test sample treatment device and a testing device is used in the method. The method comprises the following steps: 1. setting the analysis instrument in a sample feeding state for surveying and mapping a base line; 2. converting the analysis instrument into a spectrogram of nitrite and nitrate in an analysis state surveying and mapping test sample; 3. replacing a test sample by using a series of standard samples with known nitrite and nitrate concentrations, repeating the steps 1 and 2 to respectively obtain corresponding standard sample spectrograms, drawing a working curve by using a concentration of a standard sample as a horizontal coordinate and a peak height of a standard sample spectrogram as a longitudinal coordinate; and 4. substituting a peak height value of the test sample spectrogram in a regression equation of the working curve, and figuring out nitrite and nitrate concentrations in the test sample.
Owner:SICHUAN UNIV

A instrument of laser speckle eyeground blood flow measurement

The invention relates to a medical used measuring instrument, in particular to an instrument utilizing a laser speckle technology to perform the measurement to the blood flow of the eyeground, to be exact, the invention is a measuring instrument of the laser speckle method eyeground blood flow, which comprises a laser speckle collector, a data processor of which the input end is connected with the output end of the laser speckle collector and a terminal display of which the input end is connected with the output end of the data processor. The invention adopts face scanning, the mechanical and electronic control parts of a measuring mechanism and is simple compared with SLDF/HRF, therefore, the cost of the instrument is relatively lower, and the operation is relatively easier. In addition, the invention also fills up a vacancy in the aspect of the study of an eyeground blood flow imaging instrument in China, the invention is helpful for quickening the study of the disease caused by the change to the eyeground blood flow in China, simultaneously, a diagnosis can be performed to a relevant disease through the measurement to the blood flow. Through the study to the rule of an eyeground blood flow change, the invention is in favor of preventing the disease related with the blood flow such as glaucoma and diabetes mellitus.
Owner:TAIYUAN TEMARU ELECTRONICS TECH CO LTD

Synchronous dynamic tester capable of cascading with great amount of channels

The invention discloses a dynamic tester capable of cascading with a great amount of channels, comprising a master station and slave stations, wherein, the slave stations are configured through master station software to form a large scale tester; data acquisition and transmission of each slave station are independently realized under the control of the synchronous signals of the master station; a 16-channel slave station is formed by a 16-channel basic terminal and a computer; the mater station is formed by a synchronous control unit and a computer; the slave station is connected with the mater station through a synchronous interface; and the synchronous control of a plurality of the slave stations is finished through a synchronous control unit in the mater station and an application program in the computer by the slave station, thus dynamic data acquisition of an arbitrary channel is realized. In the invention, the synchronous dynamic tester capable of cascading with a great amount of channels is formed in a cascading manner; the synchronous control unit realizes the simultaneity of data acquisition, and strictly synchronizes among channels, thus improving work efficiency, reliability and expandability of the tester.
Owner:HUAWEI TEHCHNOLOGIES CO LTD

Innovative contact switching mechanism of tapping switch

The invention relates to an innovative contact switching mechanism of a tapping switch for a transformer. A center hole of moving contacts penetrates an integrated pin; two bearings are embedded at two ends of the integration pin respectively; each bearing is embedded into a sliding block; each sliding block abuts against a spring; each spring is supported on a support; the supports are fixed on a main shaft; fixed contacts are circumferentially distributed on the main shaft; every fixed contact is connected with a transformer coil tap through a cable. The operation mode of the innovative contact switching mechanism includes that every moving contact is driven to be circumferentially switched and in bridging joint between the two corresponding adjacent fixed contacts to switch on a circuit when the main shaft is controlled to rotate and accordingly a shift regulating task of the tapping switch is achieved. The innovative contact switching mechanism is characterized in that the penetration serial connection is performed on the butterfly-shaped moving contacts which are pairwise folded through squeezing caps which are arranged at two ends of the integration pin respectively to apply the elastic pre-tightening force for axial condensation. According to the innovative contact switching mechanism of the tapping switch, the contact is simultaneous, the structure is simplified, the combination is flexible, the switching is synchronous, the reversing is accurate, the temperature rise is low in value, the resistance is stable, the operation is reliable, and the torque is light.
Owner:任宏宇

Plasma terahertz waveguide generating device

The invention discloses a plasma terahertz waveguide generation device, which comprises a microcontroller, a man-machine interaction module, a power supply, a high-voltage pulse power supply, a groundelectrode, a dielectric plate and high-voltage pulse branches, wherein a micro through hole array penetrating through the whole dielectric plate is arranged on the dielectric plate; one high-voltagepulse branch corresponds to one micro through hole; each high-voltage pulse branch comprises a resistor, a high-voltage solid-state switch, a driving module and a pin electrode; each pin electrode isinserted into the corresponding micro through hole from the upper surface of the dielectric plate; the outer surface of each pin electrode is tightly attached to the inner surface of the correspondingmicro through hole; the ground electrode is tightly attached to the lower surface of the dielectric plate; the two ends of the micro through hole array are sealed through the pin electrodes and the ground electrode; and each micro through hole contains working gas. Electric control type adjustment of photonic crystal band gap characteristics can be realized, and the device has the characteristicsof fast dynamic response, reconfigurability and wide adjustment frequency band.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS

Hydraulic system of hydraulic self-moving type movable transformer train

A hydraulic system of a hydraulic self-moving type movable transformer train breaks through a traditional mode that an end support and a single set of electro-hydraulic control reversing valves control a support and a group train simultaneously, and the thinking that one set of electro-hydraulic control reversing valves and multiple sets of hydraulic control reversing valves are adopted for controlling in a grouping and partitioning mode. The hydraulic system comprises the electro-hydraulic control reversing valves; part of function ports of the electro-hydraulic control reversing valves are used for controlling related actions of the end support, such as lifting of a stand column, stretching and contracting of a balanced oil cylinder and a pushing oil cylinder and other actions; the other function ports of the electro-hydraulic control reversing valves are used for being communicated with control ports of the hydraulic control reversing valves in the partitions to achieve the reversing action of the hydraulic control reversing valves; each hydraulic control reversing valve is provided with two control ports k1 and k2; when the control ports k1 are at high pressure, an A1 port and an A2 port of the hydraulic control reversing valves work and plate trailers descend; when the control ports k2 are at high pressure, an A3 port and an A4 port of the hydraulic control reversing valves work and the plate trailers ascend; each set of hydraulic control reversing valves are arranged in the middle of the corresponding partition of the plate trailer, and are used for controlling the ascending and descending actions of the plate trailers inside the left end partition and the right end partition.
Owner:BEIJING TIANMA INTELLIGENT CONTROL TECH CO LTD

A printing label glue bonding device and its process

The invention relates to the technical field of glue bonding for printed labels, and discloses a label printing glue bonding device, which includes a body, a fixed platform is fixedly installed on the left side of the upper surface of the body, and the interior of the fixed platform is interactively socketed There is a rotating cylinder, the right side of the upper surface of the fixed platform is fixedly connected with a support rod, the right side of the fixed platform is movably socketed with a positioning cylinder, the top of the body is fixedly installed with a support platform, and the support platform is located on the right side of the fixed platform. On the side, the right side of the upper surface of the body is fixedly connected with a box, and the right side of the body is fixedly connected with a straightening block. This label printing process adopts the reverse printing technology, through the alignment of the label between the cam, the fixed rod and the positioning wheel, and the material of the label tape is generally paper and film materials, so that the printed matter and the bottle body are more tightly bonded, without There will be gaps, which improves the bonding strength of bottle caps and labels and beautifies the product. The invention is suitable for letterpress printing machines, PS printing machines, full rotary printing machines, and flexo printing machines.
Owner:无锡佰广包装材料有限公司
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