40results about How to "Overcoming serious flaws" patented technology

The invention provides a structure of a pump-jet water propeller system for a five-element combined ship. A screw pump, a multi-stage series axial-flow pump and other members are optimally combined in the system, which generates a qualitative leap, achieves the purpose of super-powerful water-jet propulsion, meets the requirement of super-powerful propulsion for various modern high-speed ships and the requirement of energy saving, and eliminates the fatal flaws of water-jet propulsion using a screw propeller or a single axial-flow pump or mixed-flow pump in terms of principles. The five innovation points are as follows: a first element is a pre-mounted multi-stage dual-circular arc gear pump which is used for guaranteeing and increasing pressure and speed, a second element is a screw pump, a third element is a multi-stage axial-flow pump, a fourth element is an air/water co-jet boost structure and a fifth element is a guide pipe which is mounted at a jet mouth to achieve the energy saving effect. The two independent pumps are arranged inside a cabinet and produce less noise. The pump-jet water propeller system is suitable for being set with a super-high power to support the large-sized and high-speed ships. The third element, the second element and the first element are assembled in sequence to form an air pump for ships. The pump-jet water propeller system is applied to the development and application of the high-speed ships and can promote the development of related industrial chains.

The invention relates to an aluminum-copper-magnesium alloy wire rod and a manufacturing technique of the aluminum-copper-magnesium alloy wire rod. The aluminum-copper-magnesium alloy wire rod is formed by the following raw materials in percentage by weight: 0.2-2.5% of copper, 0.2-2.8% of magnesium, 0.1-0.6% of silicon, 0.2-0.7% of iron, 0.03-0.5% of boron, 0.03% of manganese, 0.03% of zinc, 0.03% of chrome, 0.01% of titanium, and 96%-98% of aluminum. The manufacturing technique comprises the following steps: (1), smelting of aluminum alloy, (2), online treatment of aluminum alloy, (3), casting of aluminum alloy, (4), rolling of aluminum alloy wire rod, and (5), carrying out online aging treatment on the rolled aluminum alloy wire rod to obtain the wire rod, wherein the drawing out temperature is not higher than 60 DEG C. The aluminum-copper-magnesium alloy wire rod meets the performance requirements on the raw material aluminum alloy wire rod in copper clad aluminum alloy in the cable industry field, in particular the requirements on the performances in the aspects of tensile strength, percentage elongation and compressive creep, and the like.

The invention discloses an automobile side wall outer plate drawing die provided with an auxiliary drawing male die. The automobile side wall outer plate drawing die provided with the auxiliary drawing male die comprises an upper die holder, a lower die holder and a blank holder. The upper die holder is provided with a drawing female die. The lower die holder is correspondingly provided with a drawing male die matched with the drawing female die. The drawing male die is arranged inside the blank holder and connected with the blank holder in a sliding manner. The auxiliary drawing male die is arranged on the lower die holder. The auxiliary drawing male die is located between the drawing male die and the blank holder and connected with the blank holder in a sliding manner. The auxiliary drawing male die is opposite to the connection site of the automatic side wall outer plate, a back cover and a back air window. According to the automobile side wall outer plate drawing die provided with the auxiliary drawing male die, because the auxiliary drawing male die is arranged between the drawing male die and the blank holder, in the early period of drawing forming, the auxiliary drawing male die can allow plate materials to flow in, and the situation that the plate materials are drawn broken because the plate materials are excessively thin is avoided; and in the later period of drawing forming, the auxiliary drawing male die can prevent outside plate materials from flowing in and can also have the function of drawing the plate materials from the inner side to the outer side, and therefore deformation of the plate materials opposite to the connection site is more sufficient.

The invention provides a nest type PCR method for detecting different variants of an ostreid herpes virus-1 (OsHV-1). According to the detection method, an ostreid herpes virus DNA polymerase gene functional domain nucleotide sequence is adopted as a template, two pairs of nested primers are designed, and the nest type PCR detection method is designed based on the theme. Due to the fact that DNA polymerase genes are highly conservative on a herpes virus intraspecific category, the two pairs of nested primers can be combined with all currently-known OsHV-1 variant genomes, specific DNA nucleic acid fragments of the variants are qualitatively detected, and high sensitivity and good specificity are achieved. The severe defect that an existing molecular detection method can only detect part of the variants of the OsHV-1 can be overcome through the detection method. The detection method can be used for tracking and detection on the ostreid herpes virus during breeding of shells in all periods, and has high use value. The method is expected to replace prior relevant molecular detection methods for the ostreid herpes virus.

The invention discloses a continuous forming device for a hollow composite board-wood plastic composite material and an application thereof. The continuous forming device includes a hollow composite board production device, a wood plastic composite material production device, a composite mold, a vacuum setting device, a first traction device and a cutting device; the hollow composite board production device comprises a machine frame table and a lower film unwinding device, a first spraying device, a first felting device, a hollow fabric unwinding device, a second spraying device, a second felting device, an upper film unwinding device, a setting device, a curing chamber and a second traction device which are arranged along the machine frame table in order; the wood plastic composite material production device includes a double-screw extruder, a transition section, a melt pump and a forming part which are connected in sequence, wherein the length of the transition section is 8-12 cm; the second traction device of the hollow composite plate production device and the forming part of the wood plastic composite material production device are converged at an inlet of the composite die, and an outlet of the composite die is successively connected with the vacuum setting device, the first traction device and the cutting device.

The invention relates to the technical field of continuous casting large round billet production and specifically discloses a production method of a 32Cr3Mo1V continuous casting large round billet forroller shell. The production method of the 32Cr3Mo1V continuous casting large round billet for roller shell is provided for mainly solving the technical problems that a continuous casting large roundbillet in the prior art has large defects in the center of the large section and cannot be used as a major billet raw material for producing a 32Cr3Mo1V roller shell. The production method of the 32Cr3Mo1V continuous casting large round billet for the roller shell comprises the steps of molten steel smelting, wherein molten iron with the low impurity element content is adopted as the molten steelsmelting, and the impurity elements include less than or equal to 0.002% of Pb, less than or equal to 0.01% As, less than or equal to 0.002% of Sn, less than or equal to 0.003% of Sb and less than orequal to 0.002% of Bi; continuous casting, specifically, conducting protective casting in the whole continuous casting process, conducting constant-drawing-speed production, utilizing a crystallizer,conducting flow casting and end electromagnetic stirring to cooperate with weak secondary cooling water; and conducting heating, forging and pressing, low-temperature furnace charging, heating, upsetting, punching, drawing-out and broaching. The continuous casting large round billet produced through the production method has qualified chemical components. The low-power quality and the center quality of the continuous casting large round billet meet the requirements for forging the roller shell. The 32Cr3Mo1V continuous casting large round billet can be used for producing the 32Cr3Mo1V rollershell instead of steel ingots and has the good development prospects.

The invention provides a CBB82S type high current resistant long life polypropylene film capacitor. A metallized polypropylene film APHMD with double-sided aluminum plating and a side in the middle is used as the electrode layer of an inner series structure capacitor. The base film of a metallized polypropylene film APHT with one-sided aluminum plating and double sides and the PPH polypropylene high temperature film between the APHMD and the APHT are used as the medium of the capacitor, and the aluminum plating layer of the APT is used as the series electrodes of inner series capacitors C1 and C2. The processes of horizontal centering among three layers of films, vertical winding and winding error amplitude 5MM above are used in the winding process, a pure aluminum base and tin-zinc alloy spraying are employed in the spraying process, the contact resistance of the double-sided aluminum plating electrode layer and a pure aluminum metal spraying layer is extremely low, the equivalent series resistance ESR of the capacitor is reduced, the current resistance characteristics of the capacitor is improved, the loss angle tangent value of the capacitor is reduced, the temperature rise of the capacitor is reduced, thus the service life of the capacitor is prolonged to 10 years.

The invention discloses an oil paint coating method for an external identifier of a metro vehicle, which comprises the steps of blending oil paint and a curing agent according to a certain volume ratio; manufacturing a silk-screen template according to the content of the identifier, and fixing the silk-screen template at an external corresponding region of the vehicle; coating the blended oil paint on the silk-screen template, and performing the blade coating by a scratch board; and removing the silk-screen template, and drying the identifier under a room temperature. Due to the oil paint coating method, the external identifier of the metro vehicle is good in weather resistance, ultraviolet ray resistance, aging resistance and the like, so that the use durability of the external identifier of the metro vehicle can be guaranteed, the aging, the fading and the falling of the external identifier of the metro vehicle through wind blowing, raining and solarizing and the cleaning of vehiclecleaning liquid caused by lamination can be completely eradicated, the passenger safety can be guaranteed, and the metro vehicle can be conveniently overhauled. Meanwhile, due to the oil paint coating method of the external identifier of the metro vehicle, the quality of the metro vehicle is greatly improved.

The invention provides a voltage compensating device able to avoid thyristor direct connection, including compensating transformer T and thyristor bridge. Primary winding of T is composed of at leasttwo windings W1 and W2 respectively, their number of windings same; the thyristor bridge uses at least 8 single-way thyristors S1-4 and S5-8, divided into two groups to compose thyristor bridge groupH; S1 and S2 with the cathodes connected together are linked with header point of W1; S3 and S4 with the anodes connected together are linked with header point of W2; S5 and S6 with the cathodes connected together are linked with end point of W2; S7and S8 with the anodes connected together are linked with end point of W1.

The invention relates to a quantitative tissue mass incision and implantation device, comprising a rectangular outer thimble, a rectangular inner thimble, a rectangular locating core and a swivel knife; the rectangular locating core with sealed front face is movably and internally sleeved in the inner thimble, and the rectangular locating core and the inner thimble are movably and internally sleeved in the outer thimble together; the swivel knife is arranged in the thimble wall at the front end of the rectangular inner thimble; the swivel knife comprises a swivel knife head and a swivel knife handle; the swivel knife head is fixedly connected on the swivel knife handle; the swivel knife handle is arranged in the side wall of the rectangular inner thimble in the axial direction and extends backward out of the side wall; the swivel knife head is arranged in the side wall of the rectangular inner thimble in the direction of end face; when the swivel knife rotates, the swivel knife head transversely incises a lumen end face of the rectangular inner thimble. By adopting the above technical proposal, a set of standard tumor mass incision and implantation devices is designed and manufactured, and in combination with the stipulated use method, serious defects in the process of manufacturing current models can be effectively evaded and standardization degrees of animal tumor formation models can be improved.

The invention provides an inclined member steel bar reinforcing device and method. The device comprises protection devices disposed at two sides of an inclined member, and the protection devices are used for limiting the position of the inclined member; and one sides of the protection devices are connected to the inner side of a formwork, a rib is arranged on the outer side of the formwork, and the protection devices are connected to the rib through drag hooks. The device has the beneficial effects that the upper and lower protection devices of the inclined member can be prevented from exceeding allowable deviation; serious defects of the structure due to the fact that upper and lower protection devices of the inclined member greatly exceed allowable deviation (1.5 times of allowable deviation) can be avoided; and the engineering quality of the inclined member can be greatly improved, the bearing capacity of the inclined member is improved, the safety of the inclined member in use is guaranteed, and the engineering hidden danger is reduced.

The invention discloses a dynamic flow distributing apparatus of an air purifier, wherein a flow distributing mouth is mounted inside an outdoor air inlet; a flow distributing piece is mounted inside the flow distributing mouth; the flow distributing piece is connected to a rotary shaft; one end of the rotary shaft is connected to a motor; the motor is connected to a control module; the control module is connected to an oxygen sensor; a throat pipe is set on the back of the flow distributing mouth; a flow mixing cavity is set on the back of the throat pipe; and a blower is set on the back of the flow mixing cavity. By adopting the dynamic flow distributing apparatus provided herein, the mixing proportion of outdoor air and indoor air is controlled by dynamically controlling the intake volume of the outdoor air, thus effectively reducing the humidity and dust of air that is sucked indoor, prolonging the service period of an air filter core, decreasing the possibility of forming ozone and stabilizing the ozone content.

The invention discloses a reclaimed water reuse treatment process adopting a process technical route composed of a sewage tank 1, a grating filter tank 2, a regulating tank 3, a flocculant dosing tank 4, a dosing metering pump 5, a primary sedimentation tank 6, an aeration tank 7, a final sedimentation tank 8, a multi-stage filter 9, a disinfectant tank 10, a disinfectant metering pump 11, a reclaimed water reservoir 12, a reclaimed water lifting pump 13, a Roots blower 14, an aeration disperser 15, an aeration conveying pipeline 16, a sand filter wall 17 and a PP cotton filter wall 18. Along with the rapid development of the breeding industry, more and more large-scale breeding farms appear, a large amount of concentrated breeding sewage is generated, the breeding sewage is recycled after being properly treated, and the water is used for the daily non-drinking water situation of the breeding farms, so that the pollution discharge amount of the breeding farms is reduced, and the water cost of the breeding farms is saved.

The invention relates to the technical field of microorganisms and biology, in particular to a method for improving an immune effect of newcastle disease inactivated vaccine by utilizing an adenovirus for expressing a GM-CSF (granulocyte macrophagecolony stimulating factor), and a kit. The method comprises the following steps: uniformly mixing a recombinant adenovirus for expressing the GM-CSF and the newcastle disease inactivated vaccine to obtain a vaccine immunity adjuvant mixture; then, performing immunization on poultry by utilizing the vaccine immunity adjuvant mixture. The invention also relates to an immunity adjuvant which is formed by the recombinant adenovirus for expressing the GM-CSF, and the kit which consists the recombinant adenovirus for expressing the GM-CSF and the newcastle disease inactivated vaccine. The method and the kit can be used for the poultry culturing industry.