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113results about How to "Fast expansion" patented technology

Gas dispenser and gas station composed of the same

A gas dispenser is technically characterized in that a PLC firstly collects the pressure value of a pressure sensor in a gas dispersion gun, namely the pressure value in a vehicular gas cylinder. Then the pressure value is added with a preset value, wherein 0<the preset value <20. The summation is compared with the pressure value of each pressure sensor under a plurality of gas cylinder openings. The valve corresponding with the pressure value which is most approximative to and larger than the summation is opened for dispensing the gas through pressure difference. The steps are adopted again before balancing or after balancing. The steps are repeated until the value of the pressure sensor in the gas dispersion gun is the rated pressure value of the vehicular gas cylinder, wherein the rated pressure value is smaller than or equal to 20MPa. Then the valve is closed and the gas dispensation is finished. The gas station of the invention is composed of a plurality of gas cylinders and gas dispensers. The gas station is technically characterized in that the plurality of gas cylinders are used circularly for providing the high-pressure gas for satisfying the using amount of continuous gas dispensation of a single gun or a plurality of guns to the vehicular gas cylinder. The invention changes the technical route of prior gas substation. The matching of large-scale power devices of compressor and hydraulic pump is not required. The gas dispenser has no mechanical wear and extraordinarily low current consumption. The gas dispenser of the invention is the developing direction of the future.
Owner:沈军

Secondary gas filling station

The invention relates to a brand-new branch gas station, only consisting of a gas adding machine, a priority sequence controller and a plurality of gas storage devices. The branch gas station has the technical characteristics that each gas storage device is composed of a plurality of gas tanks which are filled with high pressure compressed natural gas (CNG) of 25 MPa, the gas storage devices alternatively and cyclically provide high pressure CNG to form alternate recycle high pressure technology, solving the problem that the gas storage devices need a compressor or a hydraulic pump sell the remaining gas by pressurization, saving the massive equipment investment such as compressor, hydraulic pump, intra-station gas tank group and the like and easily standardizing the three major components: the gas adding machine, the priority sequence controller and the gas storage devices, being free from daily consumption such as power supply, mechanical wear and the like; in addition, the branch gas station is matched with a major gas station and pursues the technical road featuring L-CNG and is easily and rapidly replicated in cities throughout the country, thus enjoying the possibility of changing the backward situation at home where for the past dozens of years, CNG stations are hard to be integrated into a complete sales network.
Owner:沈军

Rapid dilatation method for RAID 5 (redundant array of independent disks)

The invention discloses a rapid dilatation method for an RAID 5 (redundant array of independent disks). The rapid dilatation method comprises the following steps: a strip group size SS, a dilatation read unit size RU, a dilatation write unit size WU and auxiliary variables Y and St are obtained; a current dilatation window W_no is initialized to be 0; the offset w_off in the current dilatation window is initialized to be 0; a migration record set required for dilatation is set to be empty; a current disk counter d is initialized to be 0; a strip number s is obtained through s=w_no*Wsize+w_off, and the offset in the strip group is obtained through s_off=s%SS; an initial strip number Rb of a current disk dilatation read unit is obtained through Rb=d*St, and an end strip number Re is obtained through Re=Rb+RU-1; whether a strip corresponding to the strip number s exists between the initial strip number and the end strip number of the dilatation read unit of the strip group or not is judged, if not, whether d=n-1 exists or not is judged, if so, whether w_off=Wsize-1 or s=v-1 exists or not is judged, if so, a corresponding strip unit is read from a disk in the RAID 5 before dilatation and is then written into the corresponding newly-added disk. With the rapid dilatation method, the performance and storage efficiency of the array after dilatation are improved.
Owner:HUAZHONG UNIV OF SCI & TECH

Rapidly-exploring random tree-based planning method for route of unmanned aerial vehicle

The invention relates to a rapidly-exploring random tree-based planning method for the route of an unmanned aerial vehicle, belonging to the technical field of unmanned aerial vehicles. Compared withthe prior art, the method is mainly characterized in that a random point is used as a newly-added point to replace a newly-added point generated with fixed step length in a traditional method, and a local path is closer to an obstacle by creating a parent node for the newly-added node. According to the scheme, the random point is used as the newly-added point to replace the newly-added point generated with fixed step length in the traditional method, so the exploring speed of a random tree is increased to a great extent, the constraint strength of the dimensionality and size of an environmenton a planning algorithm is reduced, and the method can better adapt to a three-dimensional scene where the unmanned aerial vehicle works; and by creating the parent node for the newly-added node, thelocal path is closer to the obstacle, so the cost of adding the newly-added node to the random tree and then to a root node is reduced, and the speed of generating the track conforming to the unmannedaerial vehicle is increased.
Owner:NORTHWESTERN POLYTECHNICAL UNIV

Automobile braking air chamber rubber diaphragm sizing material formula taking butadiene-styrene rubber as main sizing material

The invention relates to an automobile braking air chamber rubber diaphragm sizing material formula taking butadiene-styrene rubber as a main sizing material. The formula comprises the following raw materials in parts by weight: 55-100 parts of styrene-butadiene rubber, 0-30 parts of natural rubber, 0-25 parts of cis-butadiene rubber, 0.3-2.5 parts of a vulcanizing agent, 1.0-3.5 parts of an accelerating agent, 3-5 parts of zinc oxide or a substitute, 1-3 parts of stearic acid, 2-4 parts of an anti-ageing agent, 0.5-1.5 parts of a demolding agent, 0-1 part of a dispersing agent FL, 0-5 parts of an adhesive RC or a substitute, 50-100 parts of carbon black and 0-25 parts of a softening and plasticizing agent. The formula has the beneficial effects that: the styrene-butadiene rubber and a small amount of natural rubber are used together, and a vulcanizing system is adjusted correspondingly, so that the problems of high compressive permanent deformation caused by the adoption of butadiene-styrene rubber as a main body sizing material, over high crack expanding speed of flex cracking, low bonding performance, low tensile strength, insufficient product service life caused by frequent insufficient load pressure on the product, and the like can be solved.
Owner:程旻

Seven-freedom-degree mechanical arm control method and system based on analytical solution

ActiveCN109397292APath planning results are smoothImprove stabilityProgramme-controlled manipulatorAngular degreesEngineering
The invention discloses a seven-freedom-degree mechanical arm control method and system based on analytical solution. The system comprises a seven-freedom-degree mechanical arm and a control module; the seven-freedom-degree mechanical arm is in communication connection with the control module; axes of three adjacent joint motors in the seven-freedom-degree mechanical arm are crossed on the point,axes of two adjacent motor joints are perpendicular, the control module is used for carrying out inverse kinematics solution on the seven-freedom-degree mechanical arm based on the analytical solution, the joint angle of each joint motor in the seven-freedom-degree mechanical arm is obtained, on the basis of the joint angle, path planning is carried out, multiple path points from the starting point of the seven-freedom-degree mechanical arm to the target point are obtained, interpolation calculation is carried among the multiple path points, the motion track of the seven-freedom-degree mechanical arm is obtained, each joint motor is subjected to trajectory tracking, and motion of the seven-freedom-degree mechanical arm is controlled in real time. The solution speed is high, and the smoothdegree of path planning by the multi-freedom-degree mechanical arm in the complex environment can be improved.
Owner:HUAZHONG UNIV OF SCI & TECH

Steel pipe installing and expanding equipment with high-temperature heating and remodeling functions

InactiveCN104588520AThere will be no phenomenon of being stuck in the steel pipeFast expansionShaping toolsCouplingArchitectural engineering
The invention discloses steel pipe installing and expanding equipment with high-temperature heating and remodeling functions. The equipment comprises a base. The base is provided with a baffle, a transition rail, a rotating clamping device, a guide rail and a telescopic cylinder in sequence from left to right. A sliding block is movably connected to the guide rail. One end of the sliding block is connected with the output end of the telescopic cylinder. A number one motor is fixedly connected to the sliding block. An output shaft of the number one motor is connected with an expansion die through a coupler. A steel pipe is fixedly connected to the rotating clamping device and a clamping plate. The number one motor and the telescopic cylinder are matched to enable the expansion die to rotate while advancing, and the expansion speed of the steel pipe is increased; similarly, the phenomenon that the expansion die gets stuck in the steel pipe is avoided, the steel pipe rotates reversely under driving of a number two motor, and a spray gun is matched, so that the part, to be expanded, of the steel pipe is heated, the crystal structure in the part, to be expanded, of the steel pipe is changed, expanding is easier, and burst of the steel pipe is avoided.
Owner:杜玉华

Method for heating shrinkable tubes and shrinkable tube expanding system using same

The invention provides a method for heating shrinkable tubes. The shrinkable tubes are heated by a heating furnace; a through hole is formed in the heating furnace; and at least two shrinkable tubes penetrate through the through hole and are heated in the heating furnace. As the heat energy absorbed by the shrinkable tubes is extremely little, the heat energy loss of the heating furnace is mainly the heat energy dissipated from each heating furnace to the outside and is basically not changed when used for heating two shrinkage tubes by the heating furnace compared with that required for heating one shrinkage tube by the heating furnace, and more than two shrinkage tubes are heated by the heating furnace, the method for heating the shrinkable tubes can ensure that the heating furnace saves nearly more than half of the heat energy. The invention also provides a shrinkable tube expanding system using the method for heating the shrinkable tubes, and the system comprises a conveying device, a heating furnace, an expanding device and a traction device, and adopts the method for heating the shrinkage tubes by heating at least two shrinkage tubes in the heating furnace while the two shrinkage tubes penetrate through the through holes, so that the heating furnace can save nearly half of the heat energy, the expanding speed is high and the efficiency is high.
Owner:SHENZHEN WOER HEAT SHRINKABLE MATERIAL

Method for carrying out extraction, inspection and content determination on 5-hydroxytryptamine in sea buckthorn

The invention discloses a method for carrying out extraction, inspection and content determination on 5-hydroxytryptamine in sea buckthorn and relates to the field of extraction, inspection and content determination of indole derivatives in the sea buckthorn. Sea buckthorn fruit peels and fruit branches are taken as a raw material; the raw material is smashed and screened; absolute ethyl alcohol is added; ultrasonic microwave extraction is carried out; centrifugal filtration is carried out; the raw material is concentrated to 1/4; methanol is added for dissolution; normal hexane is added, andmixing, extraction and concentration are carried out; ethyl acetate is added for dissolution; after sufficient dissolution is carried out, ultrapure water is added; liquid separation is carried out; ethyl acetate phase is obtained and is concentrated to dry; little absolute ethyl alcohol is added for dissolution; volume is fixed at 50mL; content is determinated through TLC reflection scanning; molecular weight information of samples is determinated through utilization of a mass spectrometer; functional groups are detected through infrared; optical rotation and specific rotation are determinated through utilization of a polarimeter; evaporation and crystallization are carried out; and a melting point is determinated. According to the method provided by the invention, time and labor are reduced; a separation effect is relatively good; purity is high; a result is accurate; and the method for carrying out the extraction, inspection and content determination is simple in operation and highin efficiency.
Owner:LULIANG UNIV

Method for pre-expanding cold-shrinking cable accessory

The invention aims to provide a method for pre-expanding a cold-shrinking cable accessory, which comprises the following steps: expanding the cold-shrinking cable accessory by using a steel wire tensioned between two corresponding expansion discs; sleeving a support tube on an expansion bar of which one end is provided with an expansion cone head, and sleeving an end cap at the other end of the expansion bar; pushing the end cap through a cylinder piston so as to forward push the expansion bar and the support tube together along the axial direction of the cable accessory till the expansion cone head of the expansion bar is fully pushed out of the other end of the cable accessory; and finally, removing the end cap, the expansion bar and the steel wire in turn, and shrinking and clasping the cable accessory outside the support tube so as to finish pre-expanding. The cable accessory is expanded by adopting the steel wire, the steel wire material is easily obtained and does not need to bepolished, the steel wire is cheaper than a steel bar, and the steel wire for expanding the cable accessory can be pulled out by using mechanical operation, so the labor intensity of operators is lightened, the expanding speed is high and the work efficiency is improved; and the surface of the steel wire has good degree of finish, so the steel wire has little damage to the inner wall of the cold-shrinking cable accessory, ensures the safety of the cable accessory and improves the quality of a product.
Owner:七星电气股份有限公司

Method for pre-expanding cold-shrinking cable accessory

The invention aims to provide a method for pre-expanding a cold-shrinking cable accessory, which comprises the following steps: expanding the cold-shrinking cable accessory by using a steel wire tensioned between two corresponding expansion discs; sleeving a support tube on an expansion bar of which one end is provided with an expansion cone head, and sleeving an end cap at the other end of the expansion bar; pushing the end cap through a cylinder piston so as to forward push the expansion bar and the support tube together along the axial direction of the cable accessory till the expansion cone head of the expansion bar is fully pushed out of the other end of the cable accessory; and finally, removing the end cap, the expansion bar and the steel wire in turn, and shrinking and clasping the cable accessory outside the support tube so as to finish pre-expanding. The cable accessory is expanded by adopting the steel wire, the steel wire material is easily obtained and does not need to be polished, the steel wire is cheaper than a steel bar, and the steel wire for expanding the cable accessory can be pulled out by using mechanical operation, so the labor intensity of operators is lightened, the expanding speed is high and the work efficiency is improved; and the surface of the steel wire has good degree of finish, so the steel wire has little damage to the inner wall of the cold-shrinking cable accessory, ensures the safety of the cable accessory and improves the quality of a product.
Owner:七星电气股份有限公司

Capsule-type expansion body heated based on ground temperature and method for plugging formation leakage and improving bearing capability of formation

The invention discloses a method for plugging formation leakage and improving bearing capability of a formation based on the capsule-type expansion body heated at ground temperature. The capsule-typeexpansion body consists of a capsule-type expansion body shell and a liquid or solid temperature control expansion material, enters a well circumference and formation cracks and holes far away from the body with drilling fluid circulation, is heated to a certain temperature range with the ground temperature, then quickly and remarkably expands, elastically deforms to self-adapt to plugging of various types of leaked formations and improve the bearing capability of the formations. The capsule-type expansion body is divided into a physical gasification type or chemical decomposition reaction type according to the expansion principle of the liquid or solid temperature control expansion material, is kept in a non-expanding state during relatively low-temperature ground transportation and in-shaft circulating flow, and has the advantages of quick and effective plugging, self adaptation, long distance, dismounting and the like when producing quick and remarkable volume expansion and pluggingformation leakage at physical and chemical reaction temperatures.
Owner:SOUTHWEST PETROLEUM UNIV

Seepage preventing construction structure and method

The invention discloses a seepage preventing construction structure and method. The seepage preventing construction structure comprises a soil foundation, a waterproof layer and a surface soil covering layer, all of which are sequentially arranged from bottom to top. The waterproof layer comprises a first seepage preventing layer, a soil solidification layer and a second seepage preventing layer, all of which are sequentially arranged from bottom to top. The waterproof layer is composed of three layers of structures including the two seepage preventing layers and one soil solidification layer, the seepage preventing effect is greatly improved, the osmotic coefficient is smaller than 10<-10> cm / s, and the soil solidification layer is formed by solidification of bentonite, a fiber material, soil and water. The bentonite has the beneficial effects of being high in water absorbing expansion rate, high in expansion speed, resistant to ageing and corrosion, and the like; through adding of the fiber material, the anti-bending capability of the soil solidification layer can be improved as well; according to the seepage preventing technology, the seepage preventing effect is good, the external force impact and deformation resisting capability is high, the compressive strength is larger than 20 MPa, and meanwhile large equipment and a large number of materials are not needed during construction. Construction is simple and efficient, cost is low, and the seepage preventing construction structure and method are suitable for being applied to channel seepage preventing, contaminated site risk control, road pavement and other fields with the high seepage preventing requirement.
Owner:HUATIAN ENG & TECH CORP MCC +1

Son-mother gas filling station

The invention relates to a son-mother gas filling station, which consists of a compressor or a low-temperature pump, a trailer cylinder and a gas filling machine. The son-mother gas filling station is technically characterized in that the compressor or the low-temperature pump increases outlet pressure to fill gas into the trailer cylinder, so that the pressure in the trailer cylinder is higher than the pressure in a vehicle cylinder, and the gas filling for the vehicle cylinder is completed through connection with the gas filling machine. The technical scheme greatly simplifies the technological flow, and is simple, efficient, energy-saving and safer. The terminal gas filling part of the son-mother gas filling station requires no power-driven power supply or transformer, thereby saving the labor and the cost of power consumption, and the gas filling terminal (son station) part can be easily constructed; the area directly occupied by the equipment is small, and the son station expanding speed is high; the investment in large-scale equipment such as a compressor leveling body, a hydraulic leveling body and the like is saved; the zero pollution and zero emission are realized; and the gas filling capability can be easily enhanced, and the invention avoids the problems of power consumption of the son station, mechanical wear and the like in the prior art. The gas filling terminal part of the son-mother gas filling station can fill gas into the vehicle cylinder in any place in a movable or fixed way.
Owner:沈军

Foam pre-foaming machine

The invention relates to a foam pre-foaming machine. The foam pre-foaming machine comprises an exhaust pipe, a vacuumizing pipe and a feeding port formed on a vacuum barrel body; the vacuumizing pipe communicates with a vacuumizing machine; a lower end barrel opening of the vacuum barrel body is provided with an end cover which is internally provided with a steam cavity chamber; the steam cavity chamber communicates with a steam source; a steam partition plate is arranged above the steam cavity chamber; a plurality of communicating holes communicating the steam cavity chamber with the vacuum barrel body are formed in the plate face of the steam partition plate; the steam partition plate is connected with a driving mechanism which drives the steam partition plate to rotate; the vacuum barrel body comprises an inner barrel and an outer barrel; a heat-preserving cavity chamber and a steam heating cavity chamber are arranged between the inner barrel and the outer barrel; the steam heating cavity chamber communicates with the steam cavity chamber through a pipeline; further heating and heat preservation on the vacuum barrel body are achieved, and the foam expanding effect is further improved; after expanding is completed, exhausting is performed on the vacuum barrel body; and then the vacuumizing operation is performed on the vacuum barrel body through a vacuumizing device, and therefore the drying degree of expanding bead particles in the vacuum barrel body is guaranteed.
Owner:安徽斯威达建材科技有限公司
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