66results about How to "No leakage issues" patented technology

The invention discloses a nozzle-adjustable steam ejector. The nozzle-adjustable steam ejector comprises an ejector housing with a suction chamber, a mixing chamber and a diffusing chamber inside, and a spray pipe which is partially inserted into the suction chamber, wherein the spray pipe is provided with a nozzle which faces to the mixing chamber. The nozzle-adjustable steam ejector further comprises a retractable pipe which is hermetically connected with the ejector housing and the spray pipe, and an adjusting device which is used for adjusting the distance between the nozzle and the mixing chamber; a guide mechanism is arranged between the spray pipe and the ejector housing. The nozzle-adjustable steam ejector disclosed by the invention has the advantages that of simple structure, low manufacturing cost and simplicity and convenience in installation and disassembling. Not only can the distance between the nozzle and the inlet of the mixing chamber be adjusted, can the performance of the steam ejector be improved and can the ejector be kept to have the optimum working performance within a wider operating range, but also the sealing performance is not influenced during adjustment of the distance between the nozzle and the suction chamber since the spray pipe is hermetically connected with the nozzle with the ejector housing by adopting the retractable pipe, and the problem of leakage caused by a reason that the sealing performance is poor or becomes deteriorated does not exist.

The invention discloses a figuration phase change material based on tetradecane. The figuration phase change material is formed by mixing and processing the tetradecane with the mass percentage between 30 and 80 percent and the balance being a polymer framework material, wherein the polymer framework material is one or a combination of polyethylene (PE), styrene-butadiene-styrene copolymer (SBS) or styrene-isoprene-styrene copolymer (SIS). The invention has the tetradecane absorbed and/or wrapped in the specific polymer material as a framework. Because the polymer material as the framework can not be deformed in the working temperature range (20 below zero to 40 DEG C for example) of the tetradecane, the shape of the material can be kept, and the problems about collapse or flowing and leakage can not occur. Therefore, the obtained figuration phase change material can be widely applied to the low-temperature preservation and transportation of medicines, foods and the like.

The invention discloses a dynamic password control method which comprises the following steps: a. an encryption algorithm F is set in equipment/software, and the encryption algorithm takes the characteristic value and date of the equipment as variables; b. when losing the password, a client puts forward an inquiry request to a service provider; c. the service provider firstly check the identity of the client, then extract the characteristic value and the date of the current day of the client, starts the encryption algorithm to produce a superior password P1 and returns the superior password P1 to the client, wherein the encryption algorithm is as the same as the encryption algorithm F set in the equipment/software; d. the client inputs the superior password P1 into the equipment, the equipment starts the set-in encryption algorithm F after receiving the input of the client, and a superior password P2 can be calculated by taking characteristic value and the date of the current day of the equipment as variables; and e. the equipment compares superior passwords P1 and P2, when P1 and P2 are identical, the equipment verifies the superior password input by the client to be valid, thus the client password is reset to the initial password. The dynamic password control method provided in the invention effectively solves the leakage of the superior password with simple operation.

The invention relates to a calculation method of the sub-synchronous oscillation mode attenuation coefficients based on Prony algorithm, and mainly aims at solving the problem in extracting key modal parameters as modal frequency and attenuation coefficients from sub-synchronous signals. The calculation method is based on the Prony algorithm, takes shafting rotating speed signal of high sensitivity as input signals, employs least square fit, greatly eliminates influence of noise signals, requires no filtering, reserves all data information, is capable of extracting multiple modal information, and thus, extracts attenuation coefficients of different modes accurately and rapidly.

The invention discloses a teniposide nanosuspension and a preparation method thereof. Each 1ml of the nanosuspension contains 0.1-50mg of teniposide, 0.1-500mg of a stabilizer, 0-500mg of an additive, and the balance of water. Compared with commercially available teniposide injections (VUMON), teniposide intravenous emulsions, teniposide solid lipid nanoparticles and phospholipid complex liposomes, the teniposide nanosuspension has the advantages of high drug load, good stability, no carriers or co-solvents, avoiding of the use of organic solvents, low toxic side effects, reduction of the untoward reactions of patients, good patient compliance; high-efficiency low-toxicity performance of the antitumor activity of teniposide, good clinical curative effect and good application prospect.

The present invention discloses a solid electrolyte for a dye-sensitized solar cell based on ionic crystal. The solid electrolyte comprises the following components, part by weight: 40-50 parts of cyanoimidazole ionic crystal, 3-7 parts of (4-ferroceneacetenyl) aniline modified fullerene, 5-10 parts of elemental iodine and 5-10 parts of additive. The additive is one or more than one of MBI, NBB and TBP. Compared to the prior art, the solid electrolyte for a dye-sensitized solar cell based on ionic crystal provided by the invention is higher in conductivity, better in stability, easy to package, free of organic solvent, better in safety, and more efficient for improvement of the photoelectric conversion efficiency and the work stability of the dye-sensitized solar cell.

The invention provides a method for constructing a flexible super capacitor. The method comprises the following steps: adding graphite oxide in deionized water according to a mass ratio of the graphite oxide to the deionized water of 0.5-2: 1000, and magnetically stirring or manually shaking for 0.5-1h to obtain a product A; stewing the product A at a temperature of 60-80 DEG C for 0.5-1h until a complete graphite oxide film is formed on the surface of graphite oxide hydrosol to obtain a product B; using a flexible film as a substrate, depositing the product B on the substrate, and drying to obtain a product C; soaking the product C in a hydrogen iodide solution with a mass percent of 55-85%, reducing for 3-48h at 15-80 DEG C, and cleaning to obtain a product D; and soaking the product D in 0.5-5mM potassium permanganate for 5-48h, and cleaning to obtain a product E, namely a graphene/manganite composite film deposited on the flexible substrate is obtained. The capacitor constructed by the method is good in electrochemical performance, and a traditional sandwich type flexible super capacitor can also be constructed, and meanwhile, the method is beneficial for the miniaturization and lighting and thinning of devices.

The invention provides a semiconductor discharge tube and a manufacturing method thereof, and relates to the technical field of semiconductor power devices. The semiconductor discharge tube comprisesan N type substrate, a first P type short base region, a second P type short base region, a first P type heavily doped region, a second P type heavily doped region, a third P type heavily doped region, a fourth P type heavily doped region, a first N type emitter region, a second N type emitter region, a first electrode, a second electrode and an insulating layer. The semiconductor discharge tube and the manufacturing method thereof have the advantages of being small in voltage discreteness, long in service life and low in residual voltage.

The invention relates to a milling drum quick-changing structure, a milling machine and a using method of the milling drum quick-changing structure, and belongs to the field of pavement maintenance operation construction equipment. The milling drum quick-change structure comprises a box body, a speed reducer, a milling drum and an internal support body, the milling drum is arranged in the box body through an internal support body; the internal supporting body comprises a supporting cylinder, a flange plate and a shaft end assembly. One end of the supporting cylinder is a closed end, and the closed end is connected with the flange plate; the other end of the supporting cylinder is an open end, and the open end is connected with the moving end of the speed reducer to form a closed inner cylinder cavity. The shaft end assembly is connected with the milling drum and the flange plate through the connecting seat; the whole process of replacing the milling drum is simple and efficient, and the labor intensity is greatly reduced.

The invention provides a drive core pipe valve of a dual valve body bellows pressure cabin, and relates to pressure opening and closure, pulse, non-return, safety, regulation, pressure reduction, emergency shutoff and the like; a valve core pipe wrapped in an inner cavity of an outer valve body serves as a fixing piece to coaxially penetrate a sleeve I of a valve body, an inner cavity of the valvebody and a sleeve II of the valve body; the middle part of the valve core pipe is provided with an axial interlayer, and the two adjacent axial sides of the interlayer are each provided with at leastone radial circulation hole of an input section and an output section; a sealing pair is formed by an annular valve element surrounding the interlayer, and an annular valve seat of at least one sleeve throat of the sleeve I and the sleeve II; the input section and the sleeve I as well as the output section and the sleeve II are cooperated in an axle hole mode, and the joint parts are provided with seals; and the joint part between the input section and the sleeve I is provided with the bellows pressure cabin, and the bellows pressure cabin and a front pressure cavity of the valve are throughby manes of a channel. Under the effect of potential energy in two directions, the valve body does axial reciprocating motion in the inner cavity of the outer valve body so that the effects of openingand closure and function switching are achieved. The drive core pipe valve is safe, reliable, leak-free and multipurpose.

A bi-metal pipeline and pipe fitting beveling method is used for a bi-metal pipeline and a bi-metal pipe fitting. The bi-metal pipeline and the bi-metal pipe fitting each comprise a base layer and a composite layer. Each base layer is made of one of carbon steel, alloy steel and stainless steel. Each composite layer is made of nickel-based alloy or stainless steel. The beveling method comprises the first step that primary beveling is conducted on the base layer and the composite layer of the end face of the bi-metal pipeline or the bi-metal pipe fitting, and the end face is called a beveled end face after primary beveling. The problem of circular seam leakage caused by misalignment can be solved, and the circular seam installation quality is guaranteed.

The invention relates to the technical field of intelligence, in particular to a green packaging box which comprises a box bottom plate, the top of the box bottom plate is fixedly connected with a box body mechanism, the box body mechanism is provided with a box cavity, a protection plate is arranged in the box cavity in a sleeved mode, an embedding opening is formed in the top of the box body mechanism, and an insertion frame is arranged in the embedding opening in a sleeved mode. When the protection plate is placed in the box cavity, the movable triangular sleeve moves towards the interior of the movable cavity under the extrusion action of the edges, so that after the movable triangular sleeve completely enters the movable cavity, the bevel edge at the bottom of the trapezoidal column makes contact with the edges, and under the extrusion action, the bevel edge at the bottom of the trapezoidal column can extrude the movable cavity towards one side; in this way, the second elastic inserting strip and the first elastic inserting strip are recycled, then the top containing plate can quickly enter the box cavity, and when the top containing plate moves to the position of the bearing clamping groove, the second elastic inserting strip and the first elastic inserting strip can be clamped in the bearing clamping groove under the elastic effect.