36results about How to "Small weight change" patented technology

The invention discloses an internal leakage quantity detection device of hydraulic valves. The internal leakage quantity detection device comprises a test bench (3), a support (5), a container (11), an oil inlet pipe (12), an oil outlet pipe (9), a funnel (8), a weighing sensor (7), a transmitter (6), a single-chip microcomputer system (4), a display module (1), a two-position two-way magnetic exchange valve (10) and a button (2). The inlet of the container enables leaked hydraulic oil leaked inside tested hydraulic valves to be stored inside the container (11) which is placed on the weighing sensor (7), the weighing sensor (7) and the transmitter (6) are placed on the support (5), weight of the leaked oil is converted into an electric signal through the weighing sensor (7) and the transmitter (6), the electric signal is converted into a digital signal through analog to digital (A/D) conversion, the digital signal is input into a single chip microcomputer and converted into internal leakage quantity through the single chip microcomputer, and the internal leakage quantity is displayed through the display module (1). The container (11) is specially provided with an outlet controlled by the magnetic exchange valve (10) to prevent the hydraulic oil from overflowing out of the container (11) during a measurement process, actual capacity of the container is measured through the single chip microcomputer, once the actual capacity exceeds the threshold value, measurement is stopped, the magnetic exchange valve (10) is opened through a relay, and the hydraulic oil inside the container (11) is discharged. The internal leakage quantity detection device measures the internal leakage quantity of hydraulic valves in an automatic weighing mode, can expand measurement range, can automatically measure minute leakage quantity, and can provide data basis for comprehensive assessment and performance improvement of batch quality of hydraulic valves.

The invention discloses a feeding device used in automatic weighting equipment. The feeding device comprises a material trough, a transmission mechanism and a distributing mechanism, wherein the transmission mechanism is used for driving the material trough to transport a material; the distributing mechanism is arranged at the discharge opening of the material trough; the distributing mechanism comprises one or more separating plates which divide the discharge opening into two or more discharging through openings. According to the feeding device disclosed by the invention, the distributing mechanism is arranged at the discharge opening to divide the discharge opening into multiple through openings, so that resistance is increased for the material sliding down; furthermore, the fast feeding time is prolonged, and the efficiency and the precision are improved during the entire feeding process.

A process for producing wet ribavirin pellets is provided in order to make pharmaceutical dosages of ribavirin. The process is particularly useful as an alternative method for preparing pharmaceutical dosages of ribavirin that reduces the amount of ribavirin dust that is produced during the manufacturing process and allows for greater control of dissolution rates. According to the preferred embodiments, this method is accomplished through mixing ribavirin with at least one excipient into a uniform mixture, forming the mixture into a granulated mass by adding a wetting agent, shaping said granulated mass into soluble particles and drying the flowable particles. The process enables Ribavirin pharmaceutical pellets to be mixed with a binder and disintegrant to form a uniform mixture.

The invention relates to a high-strength corrosion-resistant nickel-based polycrystalline high-temperature alloy and a preparation method thereof. The alloy comprises the following components of, in percentage by mass, 13%-17% of Cr, 15%-20% of Co, 0.1%-0.5% of Ti, 5.0%-5.5% of Al, 3.0%-7.0% of W, less than or equal to 0.5% of Si, less than or equal to 0.5% of Mn, 1.5%-2.0% of Nb, 0.04%-0.07% of Cand the balance Ni. Homogenizing treatment is conducted after smelting is conducted, hot rolling is conducted and finally heat treatment is conducted. The alloy has excellent strength and corrosion resistance, and the tensile yield strength of the alloy at a room temperature and 850 DEG C is higher than 900 MPa and 680 MPa respectively, and the alloy has excellent processing performance and structure stability at the same time.

The invention discloses a method for preparing a paint remover suitable for an epoxy group printed circuit board. The paint remover is extracted for a plurality of times through deionized water, and after separation, the paint remover is collected; a soldering tin material corrosion inhibitor is added into the paint remover to be uniformly mixed; then, a devolatilizer is added to be uniformly mixed; and a multiple thicker is added to be uniformly mixed, so that the paint remover suitable for the epoxy group printed circuit board is obtained. By the method, the paint of the epoxy group printed circuit board can be removed within a short time, the improved paint remover is used for swelling, a paint film surface is softened and wrinkled, so that obvious wrinkling and falling phenomena can be observed, a paint removing effect can be realized within a shorter time, time for removing the paint is shortened, and the production efficiency is increased.

The invention relates to the technical field of strain measurement, and especially relates to an installation process for a strain gauge, which is used for mounting the strain gauge on a turbine blade. The strain gauge includes a paster and a lead, and one end of the lead is fixedly connected to the paster; and the turbine blade includes a margin plate and a blade body disposed on an outer side ofthe margin plate. The installation process includes the following steps: performing hole-opening treatment on the margin plate to form a through hole penetrating the margin plate, and allowing the through hole to extend in a direction from the inner side to the outer side of the margin plate; and fixing the paster on the blade body, and making the other end of the lead wire pass through the through hole from the outer side of the margin plate to reach the inner side of the margin plate; and enabling the lead to be fixedly connected to the margin plate. The installation process can better fixthe lead of the strain gauge, and can also make a stress measurement value of the turbine blade closer to an actual working condition.

A control method for an injection molding machine comprises the steps of measuring a density of a molten resin in a heating cylinder, controlling a stroke of an injection screw in an injection process by feed forward control based on the measuring step, and controlling an operating parameter of the injection molding machine based upon the measuring step.

The invention discloses an ecological rubble retaining wall and a construction method thereof,and belongs to the field of wall greening.The ecological rubble retaining wallis used for greeninga rubbleretaining wall surface and ensuring the overall stability and strength of the rubble retaining wall;the ecological rubble retaining wall comprises a rubble retaining wall body, an ecological cavity is formed in the rubble retaining wall body, wherein the ecological cavity penetrates through the rubble retaining wall body in the thickness direction of the rubble retaining wall body; the ecologicalunit used for plant growth is arranged inthe ecological cavity; the terminal end of the ecological unit is embedded in a backfill layer on the back side of the rubble retaining wall body, the front end is locked to the outer end surface of the rubble retaining wall body through a limiting panel, and a growth gap used for the plant growth from the ecological unit to the outer side of the rubble retaining wall body is formed in the limiting panel. According to the ecological rubble retaining wall and the construction method thereof, the ecological unit is filled in the ecological cavity and integrated with the rubble retaining wall body as a whole to ensure the integrity of the rubble retaining wall body; and the overall weight change of the rubble retaining wall body filled with the ecological unit is small, and the stability and strength of the rubble retaining wall body can be ensured.

The invention relates to the technical field of woven fabric detection, and provides a sock detection device capable of converting friction speed by utilizing air permeability. The device comprises afirst rotating shaft, and is characterized in that the outer wall of the first rotating shaft is fixedly connected with a rotating wheel, the inner wall of the rotating wheel is movably connected witha first gear, the outer wall of the first gear is provided with a stand column, the outer wall of the stand column is movably connected with a linkage rod, and the outer wall of the linkage rod is movably connected with a sliding block. According to the sock detection device capable of converting friction speed by utilizing air permeability, a fan blows water vapor into a rotating block, a friction block can extrude a sponge to extrude water into a water outlet, the water flows into an evaporation box from the water outlet, the water vapor penetrates through socks to reach the outside to be absorbed by the sponge, the socks are good in air permeability if the weight change of the sponge is large, a wire performs magnetic field cutting motion between magnetic poles, the wire generates static electricity, fiber yarn leaking out of silk yarn for weaving the socks is attracted out to form pellets, and the air permeability and the pilling degree are detected.

The invention relates to an optimization method of a double-wing layout time-limited carrying airdrop aircraft. The optimization method comprises the following steps: S1, calculating wing related dataaccording to power, weight and lift coefficients; S2, determining the span length and the pneumatic chord length of the upper and lower wings; S3, determining selection of the relative positions of the wings and conducting CFD numerical calculation verification; S4, verifying whether a result conforms or not; if yes, continuing the next step, and if not, returning to the third step; S5, comparinga pressure distribution curve with lift-drag characteristics; S6, performing CFD numerical calculation on a full-aircraft model; and S7, optimizing wing design. The use requirements are met, the problem that the wings bear too large torque is solved, and the longitudinal stability of the aircraft is improved.