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33results about How to "Change allocation" patented technology

Method for inducing drought resistance of cucumber by arbuscular mycorrhizal fungi

A method for inducing the drought resistance of cucumbers by arbuscular mycorrhizal fungi comprises the following steps: carrying out individual inoculation and propagation expanding initial arbuscular mycorrhizal fungi inoculants; cultivating cucumber seedlings through mycorrhization of arbuscular mycorrhizal fungi inoculants, wherein inoculation media adopts a mixture of a Hoagland nutrient solution and perlite; inducing drought resistance: after the seedlings are grown for 3 months, transferring the seedlings in black seedling raising bags with the specification of 25 cm*25 cm, filling 3.0 kg of sterilization soil in each black seedling raising bag, applying 80 mg/kg of total phosphorus and 100 mg/kg of total nitrogen in each basin, and keeping the relative water content of the soil to be about 40% of the field capacity under moderate drought; sufficiently watering before processing to enable the seedlings to be in the natural drought, carrying out the water control processing when the natural drought reaches the preset relative water content in processing, using a weighing water supplementing method to keep the all repeated soil water content in each-time processing to be within the test required range during the water control period, setting the regulating time of the water content to be 8: 00 Am each day, and supplementing water lost on a previous day.
Owner:ANHUI UNIV OF SCI & TECH

Online optimization and adjustment method and system for steam supply quality of annular steam heat-supply network

ActiveCN105240688AOptimize the quality of steam supplyChange allocationPipeline systemsTraffic capacityAutomatic control
The invention relates to an online optimization and adjustment method and system for a steam supply quality of annular steam heat-supply network. The method comprises the steps that S1, an adjustment valve is additionally arranged inside the annular steam heat-supply network; and S2, the opening degree of the adjustment valve is controlled to adjust the flow distribution of steam inside the annular steam heat-supply network so that adjustment can be achieved to reach the steam quality of each heat user in the annular steam heat-supply network system. As the adjustment valve is additionally arranged in the annular steam heat-supply network, the ideal opening degree optimization scheme of the adjustment valve is obtained through an intelligent searching algorithm, and the opening degree of the adjustment valve is adjusted by an automatic control system, so that the flow distribution and flow state of the steam in the annular steam heat-supply network are changed, optimization of the steam supply quality of the annular steam heat-supply network under different working conditions is achieved, the defect that long time is wasted as a traditional searching algorithm adopts enumeration calculation and comparison is also overcome, and the computational efficiency is improved.
Owner:CHANGZHOU ENGIPOWER TECH

Abnormal-shaped groove seam cooling structure capable of improving end wall cooling efficiency

The invention discloses an abnormal-shaped groove seam cooling structure capable of improving stationary blade channel end wall cooling efficiency, a groove seam cooling structure upstream boundary and a groove seam cooling structure downstream boundary of a groove seam outlet of the groove seam cooling structure are in shapes of cosine functions with opposite phases and the same period and amplitude, and the periods and the stationary blade grid pitches of the cosine functions of the groove seam cooling structure upstream boundary and the groove seam cooling structure downstream boundary areequal. In the practical gas turbine working process, the outlet areas of the groove seam cooling structure are continuously changed according to a certain rule in the pitch direction, cooling jet flowintroduced through a gas compressor is redistributed when entering a jet flow groove so that uneven distribution of the cooling jet flow at the groove seam outlet due to pressure changes of the exterior flowing field can be overcome. By means of the groove seam cooling structure, the cooling jet flow is distributed more evenly at the groove seam outlet, the coverage area of the cooling jet flow at the downstream end wall is enlarged, and therefore the groove seat cooling jet flow can be tightly attached to the end wall to conduct sufficient cooling protection on the downstream stationary blade channel end walls.
Owner:XI AN JIAOTONG UNIV

A double outlet s-curved nozzle with low infrared radiation signal and its control method

InactiveCN106894917BInhibition of intracavity radiationChange structureJet propulsion plantsCold airEngineering
The invention discloses a double-outlet S-shaped spraying pipe capable of reducing infrared radiation signals. The double-outlet S-shaped spraying pipe comprises an air feeding and shunting section, wherein an outlet of the air feeding and shunting section is divided into two parts and is a symmetrical structure; the air feeding and shunting section is successively connected with S-shaped circular-torque-shaped rectangular sections, air film cooling rectangular exhaust sections, rectangular converging sections and rectangular expansion sections respectively; the side wall of the inner side of each air film cooling rectangular exhaust section is connection with a cold air chamber; air film holes in dislocation arrangement are formed in a connection wall side between each air film cooling rectangular exhaust section and each cold air chamber. The invention also discloses a control method of the double-outlet S-shaped spraying pipe. Through the spraying pipe and the control method, a detector is incapable of directly detecting high-temperature components behind an engine turbine; the infrared radiation emitted by high-temperature components at the upstream of the spraying pipe can be shielded to a maximum extent; meanwhile, the temperature of the wall side of the spraying pipe can also be reduced, so that the infrared radiation signals of the exhaust spraying pipe can be greatly reduced, and the exhaust performance is improved.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS

A kind of water-soluble temporary plugging ball and its preparation method and application

The invention relates to the technical field of petroleum exploitation, in particular to a water-soluble temporary plugging ball and its preparation method and application, wherein the raw material composition of the temporary plugging ball includes polyvinyl alcohol and hollow glass microspheres with different degrees of polymerization; The degree of polymerization is 500-5000; the degree of alcoholysis of polyvinyl alcohol is 70-100%, and the true density of the hollow glass microspheres is less than 0.6g / cm 3 , the diameter of the hollow glass microspheres is not greater than 80 μm. The water-soluble temporary plugging ball of the present invention can not only meet the requirements of the mechanical properties of the temporary plugging ball in the profile control process, but also the distribution probability of plugging the blast hole in the wellbore is basically consistent with the distribution ratio of the working fluid of the measure. In addition, the present invention The temporary plugging ball can be completely dissolved in water, which saves the process of recycling the temporary plugging ball, and the water-soluble temporary plugging ball also includes the process of absorbing liquid and swelling before it is completely dissolved. After swelling, the temporary plugging ball is hard inside and full externally. Under the action of the working hydraulic pressure difference of the measures, it can be tightly compacted on the blast hole, and its sealing effect is more significant.
Owner:北京贝斯特佳科技有限公司

A kind of wave edge end milling cutter

The invention discloses a wave-edge end mill comprising a mill body. An end edge front mill surface is arranged at the end portion of a mill head, auxiliary cutting edges are formed by intersection ofthe end edge front mill surface and an end edge rear mill surface, the edge shape of the auxiliary cutting edges is a sine curve, and peaks and valleys of the adjacent auxiliary cutting edges are staggered. The mill head is provided with a mill point part which is provided with a mill point edge, and a mill body chamfer is arranged at the end portion of the mill body and is 45 degrees. A specialmill clamp is used for machining the end edge rear mill surface into a wavy surface, so that the end edge rear mill surface and the end edge front mill surface intersect to form the wavy auxiliary cutting edges; the mill point strength is high, the speed of cutting off workpiece blank machining allowance is increased, and on the premise that the mill rigidity and strength are ensured, the cuttingprocess is stable, cutting is fast, vibration is low, chip discharging is smooth, and the metal removing rate is high; and the wave-edge end mill is more suitable for rough milling machining and especially suitable for milling and gas cutting of steel plates and other workpieces with rough surfaces, so that large-feeding cutting is achieved.
Owner:西安昂达机电科技有限公司

A classified intelligent storage equipment

The invention discloses a classified intelligent storage equipment, which relates to the technical field of intelligent storage equipment, including a bottom plate, a warehouse is installed above the bottom plate, a chute is opened on the inner wall of the warehouse, and a slider is installed inside the chute. The side is fixed with a first horizontal plate, and the interior of the warehouse is provided with a second horizontal plate on the side away from the first horizontal plate. The inside of the first horizontal plate is equipped with a bearing. The inner wall of the bearing is fixedly connected with a nut, and the inner wall of the nut is connected to the With adjustment lever. In the present invention, the clamping rod on the surface of a certain horizontal plate is engaged with the clamping hole, so that the nut and the horizontal plate are fixed, and then the first motor drives the adjustment rod to rotate, and under the action of the nut, the position of a single designated horizontal plate is adjusted. , to change the distribution of storage space inside the warehouse, so that users can adapt and adjust the storage space according to the size of different goods, meet the storage needs of materials of different sizes, and reduce the limitations of equipment use.
Owner:山东海易冷链物流仓储集团有限公司

A special-shaped slot cooling structure with improved end wall cooling efficiency

The invention discloses a slot cooling structure capable of improving the cooling efficiency of the end wall of the stator blade channel. The upstream boundary of the slot cooling structure at the slot exit of the slot cooling structure and the downstream boundary of the slot cooling structure are opposite in phase, period and amplitude The shape of the cosine function is the same, and the period of the cosine function of the upstream boundary of the slot cooling structure and the downstream boundary of the slot cooling structure are equal to the pitch of the stationary blade cascade. When the actual gas turbine is working, the outlet area of ​​the slot cooling structure of the present invention changes continuously along the pitch direction according to a certain rule, so the cooling jet introduced from the compressor is redistributed when it enters the jet slot to overcome the pressure caused by the change of the external flow field pressure. Inhomogeneous distribution of the cooling jet at the exit of the slot. The slot cooling structure of the invention makes the distribution of the cooling jet at the outlet of the slot more uniform, and expands the coverage area of ​​the cooling jet on the downstream end wall, so the slot cooling jet can be close to the end wall to carry out the cooling on the end wall of the downstream vane passage. Adequate cooling protection.
Owner:XI AN JIAOTONG UNIV
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