44results about How to "Reduce the rate of descent" patented technology

The invention discloses a subsection well completion system of a bottom water reservoir horizontal well, in particular to a special well completion system for a horizontal well, belonging to the field of petroleum drilling well completion. The invention aims to provide a well completion system for reducing the pressure drop rate, stabling oil, controlling water, preventing sand, blocking water, improving the oil extraction rate and reducing the well completion expense. A release joint at the root end of the horizontal well is connected with a first section of novel flow-controlling sieve tube; a novel flow-controlling sieve tube section and a casing section are alternated; a packer is arranged between the novel flow-controlling sieve tube section and the casing section; a safe joint is arranged behind a first sieve tube of the novel flow-controlling sieve tube section; a plug is arranged at the tail end of a well completion tubular column; and spring centralizers keep away from the packer and are arranged on the whole well completion tubular column at equal interval. The key part is the novel flow-controlling sieve tube. The technical scheme has the essential points that subsection well completion is implemented on the bottom water-oil reservoir according to the oil reservoir characteristics and a borehole track. The invention has the characteristics of reducing pressure, stabilizing oil, controlling water, preventing sand, improving the recovery ratio and having high economic performance and is applicable for well completion of the bottom water reservoir horizontal well.

The preparation process of active lactic acid bacteria beverage includes the following steps: mixing whole milk powder, water in 8-9 times water of the whole milk powder, sugar in 7 wt% of milk powder plus water, and trehalose in 1 wt% through stirring to obtain material milk; homogenizing at 20-30MPa, heating at 90-95deg.C while stirring to sterilize for 30-60 min, cooling to below 37deg.c, adding lactic acid bacteria seed while stirring, sterile filling and sealing; fermentation at 42-45deg.c for 3-12 hr or at 35-38deg.c for 60-120 hr; and cold storing at 4deg.c to obtain the active lactic acid bacteria beverage, which has high lactic acid bacteria stability and no acidifying in the preservation period.

The invention discloses a method for producing cellulase by trichoderma reesei fermentation. The method is characterized in that in a trichoderma reesei fermentation culture stage, a mixture of an induction carbon source and a nitrogen source is fed in a fed-batch manner, and preferably, the fed-batch feeding time is 24-26h after fermentation. The induction carbon source is obtained by mixing a biomass material enzymolysis product and a sophorose inducer according to a ratio of (3-5): (7-9), and the nitrogen source is a mixture of corn steep liquor and ammonium sulfate. The method has the advantages that the adding amount of phosphate in a trichoderma reesei fermentation culture medium is optimized, and production of the cellulase by the trichoderma reesei through permentation is performedwith low culture medium cost; the optimal nitrogen source feeding ratio is selected, so that the nitrogen source cost is saved; and the carbon-nitrogen ratio in the feeding process is strictly controlled, so that the trichoderma reesei can synthesize the cellulase at high yield.

The invention relates to a construction and installation mechanism and method for a fire-fighting vertical pipe in a floor. The mechanism comprises a vehicle body, a movable base arranged on the vehicle body, a fixed column fixed to the movable base and vertically arranged, a clamping frame fixed to the fixed column and used for clamping a firefighting vertical pipe, a pushing handrail fixed to the vehicle body and a pushing handle fixed to the fixed column, wherein the movable base comprises a pushing base slidably installed on the top of the vehicle body and a lifting base slidably installedon the pushing base, the fixed column is connected with the lifting base, and the bottom face of the lifting base is in sliding fit with the upper surface of the vehicle body; a lifting groove is formed in the upper surface of the vehicle body, and a slowing device used for slowing down the descending speed of the lifting base is arranged in the lifting groove. The floor plate has the effect of preventing the floor plate from being damaged due to installation of the fire-fighting vertical pipe.

The present invention discloses a feather scalding machine convenient for classification scalding of domestic poultry. The feather scalding machine comprises a support frame and an outer cylinder. Theoutside of the outer cylinder is covered with an insulation layer; three support legs are fixed on the outer circumference of the outer cylinder; the three support legs are distributed around the outer cylinder in an annular array distribution; the ends of the three support legs far away from the outer cylinder are all connected with the support frame; the support frame is located under the outercylinder; besides, the support frame is provided with a motor, a water purifying box and a high-pressure water pump; the water purifying box is located between the motor and high-pressure water pump;besides, the motor and high-pressure water pump are both electrically connected to an external power source; the water purifying box is connected with the outer cylinder via a pipeline; and besides,a filter net is arranged inside the outer cylinder. Two inner cylinders are arranged; one of the inner cylinders is connected with the motor; the other inner cylinder is in a movable structure; besides, the two inner cylinders are both in mesh structures; the second inner cylinder is used for placing the domestic poultry; and the first inner cylinder is responsible for driving the rotation of thesecond inner cylinder, thereby achieving the uniform scalding of the domestic poultry.

The invention discloses a preservation method for processing sweet cherry by salicylic acid. The method comprises the following steps: soaking sweet cherry fruits with uniform size and without mechanical injury in an aqueous solution of salicylic acid, taking out the sweet cherry fruits, and airing; and putting the aired sweet cherry fruits into an open PVC (polyvinyl chloride) film bag, storing at 4 DEG C and with relative humidity of 78% for 6h, binding the bag, and storing at 4 DEG C. The analysis on the change of some sensory quality of fruits during storage after picking and on the change of catalase activity, peroxidase activity, phenylalnine ammonialyase and other related enzymatic activity proves that through the treatment with salicylic acid, the water loss rate and the total soluble solid decrease rate of sweet cherry in the storage process can be effectively lowered, the rotting rate of sweet cherry is lowered, the high commercial value and edible value of sweet cherry can be kept for a long time, the capability of resisting outside threat, especially threat of microorganism infection, of sweet cherry is enhanced, the preservation effect is obviously superior to that of a control group, and the storage performance of sweet cherry is improved. The method is a safe, effective and simple preservation method of sweet cherry.

The invention provides a storing and preserving method for waxberries, and belongs to the technical field of agricultural product storage. The storing and preserving method includes storing the waxberries in a low temperature environment through a space electric field, further includes the following steps: 1) screening the waxberries, uniform in size and shape and free of pests and diseases, afterpicking; 2) soaking the waxberries in a regulator containing phytosterol and geranylgeraniol; 3) storing and preserving the waxberries in a refrigerator preset with the space electric field and a temperature. The storing and preserving method for the waxberries has the advantages that the consumption of nutrients in fruits can be reduced, damage of endogenous enzymes in the fruits to textures ofthe waxberries can be relieved, redox reactions of the fruits themselves can be inhibited, the freezing point of the waxberries is reduced to alleviate chilling injury symptoms of the waxberries, theaccumulation of secondary metabolite anthocyanin, carotene and flavonoid compounds is promoted, and accordingly, the waxberries have long storage period and high nutritional value.

The invention discloses a Chinese herbal compound for treating idiopathic pulmonary fibrosis as well as a preparation method and application thereof. The Chinese herbal compound is 'wheat flavor lungnourishing soup', which is prepared from twelve traditional Chinese medicine raw materials such as schisandra chinensis, codonopsis pilosula, radix ophiopogonis, fructus perillae, roasted ephedra herb, aster, pericarpium citri reticulatae, ginger processed pinellia, asarum, roasted radix scutellariae, angelica sinensis and roasted licorice roots. A clinical experiment shows that clinical symptomsof an idiopathic pulmonary fibrosis patient, particularly a patient suffering from deficiency of both vital energy and yin, can be obviously improved, the living quality is improved, and the exercisetolerance is enhanced; the Chinese herbal compound is high in safety, and can reduce the lowering rate of the lung functions to a certain extent.

The invention relates to the related technical field of manufacturing machinery, and discloses a transfer device for charcoal processing. The transfer device comprises a box body, a material storage cavity is formed in the inner wall of the box body, a feeding frame communicating with the material storage cavity is fixedly installed on one side of the surface of the box body, a discharging baffle connected through a hinge is arranged at the bottom of one side of the box body, carrying wheels are fixedly installed at the bottoms of the two sides of the box body correspondingly, a pushing handle is fixedly installed at the top of one side of the box body, material conveying frames located in the material storage cavity are fixedly installed on the front side and the rear side of the inner wall of the box body, the material conveying frames are located below the feeding frame, and a diffusion plate is fixedly installed at the top of the inner wall of the box body. The material conveying frames are arranged in the box body, meanwhile, the diffusion plate is arranged at the top of the box body, and therefore when charcoal is input from the material conveying frames, the descending speed of the charcoal is reduced through suction force of the diffusion plate, meanwhile, dust on the surface of the charcoal is sucked out, and finally the purposes of reducing the falling impact speed and conducting efficient cleaning are achieved.

The invention discloses a goods fixing frame. An inner pipe is inserted into an outer pipe, and can reciprocate relative to the outer pipe; a row of concave parts are formed on the wall of the inner pipe along the length direction; the outer pipe is fixed with a base which is pivoted with a grip and a ratchet wheel; the grip swings relative to the base to drive the ratchet wheel to rotate, so that a plurality of teeth enclosing the ratchet wheel are clamped into the corresponding concave parts to drive the inner pipe to move outwards; and the base is provided with a stopper having a stopping effect on the rotating ratchet wheel. The stopper is arranged to have the stopping effect on the rotating ratchet wheel, the descending rate of the inner pipe is reduced, and accidents are avoided to ensure the using safety.

The invention relates to an electronic atomization device control method, device and system and an electronic atomization device, in the process of providing working voltage for an atomizer of the electronic atomization device, an output voltage sampling value of a pulse booster circuit can be obtained in real time, and analysis is conducted in combination with preset battery cell voltage. If the output voltage sampling value is between the preset battery cell voltage and the preset voltage threshold value, performing pulse boost regulation and control on the pulse boost circuit by adopting a first regulation and control mode; and if the output voltage sampling value is greater than the preset voltage threshold value, performing pulse boosting regulation and control on the pulse boosting circuit by adopting a second regulation and control mode so as to slow down the reduction rate of the output power output to the atomizer by the pulse boosting circuit. When the voltage of the battery cell of the electronic atomization device is insufficient, the electric quantity loss of the battery cell can be effectively reduced in a feedback regulation mode, so that the decline rate of the output power is slowed down, and the situation that the difference between the working states of the front and back electronic atomization devices is large due to large output power change is avoided.

The invention relates to the technical field of feeding mechanisms, in particular to a feeding device used for rice storage and capable of screening out impurities in rice. The feeding device comprises a device main body, wherein the device main body comprises a feeding machine, a first fixing plate is fixedly connected to the inner wall of the feeding machine, a feeding port is fixedly connected to the top end of the feeding machine, a discharging port is fixedly connected to the bottom end of the left side of the feeding machine, a flow guide block is fixedly connected to the inner wall of the right end of the feeding machine, a screening mechanism is arranged in the feeding machine and comprises a second fixing plate, the second fixing plate is fixedly connected to front end of the feeding machine, and a motor is fixedly connected to the top end of the second fixing plate. According to the feeding device, rice can be well screened, meanwhile, a quantitative blanking mechanism and a quantitative discharging mechanism are further arranged, one power source is shared, certain resource input is saved, the practicability and economic benefits of the device are greatly improved, meanwhile, the whole process of the device is formed, and the device can automatically complete cyclic screening.

The invention discloses a heat slow-release element with a layered structure, and application of the heat slow-release element in a thermal battery, and belongs to the technical field of thermal batteries. The layered structure heat slow-release element disclosed by the invention is sequentially provided with an oxidant layer, a lithium-permeable thin layer and a reducing agent layer, the lithium-permeable thin layer is constructed by adopting an ion-electron conductor, and the transmission speed of lithium in the lithium-permeable thin layer is controlled, so that the reaction speed between the oxidant and the reducing agent in the heat slow-release element is controlled, the heat release rate of the heat slow-release element is further controlled, and the internal temperature of the thermal battery is accurately controlled, so that when the heat slow-release element with the layered structure is applied to the thermal battery product, the performance of the battery is obviously improved, and the thermal battery has a wide application prospect.

The invention relates to a polyvinylidene fluoride mixed matrix membrane with photocatalytic performance as well as preparation and an application thereof. A preparation method comprises the followingsteps: preparing a membrane casting solution from polyvinylidene fluoride, and blade-coating the membrane casting solution on a substrate; and putting the substrate with the membrane casting solutioninto a gel bath in which SnO2-Cu2O is dispersed, and realizing adhesion of SnO2-Cu2O on the surface of the matrix membrane through a delayed phase conversion process to obtain the polyvinylidene fluoride mixed matrix membrane. Compared with the prior art, the PVDF ultrafiltration membrane adhered with the SnO2-Cu2O photocatalyst prepared by the invention has higher hydrophilicity and remarkable photocatalytic performance compared with the traditional PVDF ultrafiltration membrane; Cu2O and SnO2 are combined to form a heterojunction structure, the photo-corrosion phenomenon of SnO2 is avoidedwhile the photo-response performance of Cu2O and SnO2 is improved, the electron transmission rate of Cu2O is increased due to addition of Cu2O, the visible light response capacity of SnO2-Cu2O is effectively promoted, the good anti-pollution effect is achieved under visible light irradiation, the membrane pollution phenomenon can be effectively reduced, and the reduction rate of the membrane fluxis reduced.

The invention specifically provides a remediation technological device for micro-polluted underground water. The remediation technological device comprises a cylindrical shell, a plasma oxidation device, a photocatalyst, an ultraviolet lamp and a quartz glass protection cover. A spraying gun of the plasma oxidation device is used for transmitting plasmas sprayed by the spraying gun to a plasma cylindrical container through a pipeline; the plasma storage cylindrical container is arranged in an inner cavity of a cylindrical shell in a sleeving manner; a space is formed between an inner side wallof the cylindrical shell and an outer side wall of the plasma storage cylindrical container; a columnar cavity formed by the inner side wall of the plasma storage cylindrical container is a repairinggroove body for treating the micro-polluted underground water. The photocatalyst is arranged in the space between the outer side wall of the plasma storage cylindrical container and the inner side wall of the cylinder. The ultraviolet lamp sleeves a central shaft of the plasma storage cylindrical container. According to the device provided by the invention, the surface of the photocatalyst can beactivated through the plasmas, so that the lowering speed of the activity of the photocatalyst is greatly reduced. Therefore, the number of times of replacing the photocatalyst can be reduced and theworking time is saved.

The invention relates to the technical field of interlocking protection, in particular to an interlocking protection method for a high-pressure steam pipe network. The method comprises the following steps that a residual workload of a running boiler is increased according to a trip signal of the boiler; and when gas pressure/flow in the high-pressure steam pipe network reaches a preset pressure value/flow value, preset time is delayed to trigger interlocking, and user equipment is gradually stopped according to a preset stopping priority. According to the scheme of method, after tripping of the boiler, the residual workload of the running boiler is increased, a descending speed of the material pressure/flow in the high-pressure steam pipe network is reduced, interlocking is delayed to be triggered after the gas pressure/flow in the high-pressure steam pipe network is lower than the preset value, then the user equipment is stopped step by step according to a preset sequence, the situation that high-pressure steam is interrupted or unbalanced when the boiler stops in an unplanned mode is prevented, and great load reduction or large-area shutdown of the user equipment is avoided.