58results about How to "Improve contact uniformity" patented technology

The present invention relates to a method for manufacturing an electrode assembly by a third process which is neither a stack folding process or a stack process. The method for manufacturing an electrode assembly in accordance with a preferred embodiment of the present invention comprises: a step (S10) of forming a unit structure comprising a structure stacked in the order of a first electrode, a first separation membrane, a second electrode, and a second separation membrane, or comprising a structure in which the structure is repeated multiple times; a step (S20) of forming an electrode assembly by stacking the unit structure in multiple layers; and a step (S30) of discharging a gas interposed between respective layers by pressurizing the electrode assembly.

A combined catalytic converting process for preparing low-carbon olefin with high output includes such steps as contacting between heavy oil as raw material, regenerated catalyst and carbon depositedcatalyst in flow-down tube reactor, cracking reaction, separating the cracked product from the catalyst to be regenerated, separating low-carbon olefin from cracked product, contacting between rest ofsaid product and regenerated catalyst in flow-up tube reactor, reaction, separating oil gas from catalyst, separating low-carbon olefin from oil gas, and regenerating the catalyst.

A scroll compressor may incorporate controlled bending of a scroll member to compensate for axial deformations that can occur between the scroll members. The controlled bending may be through the use of fluid pressure in a sealed chamber that communicates with a surface of the scroll member opposite the intermeshing wraps. Fluid passageways can extend through the scroll member between the sealed chamber and the intermeshing wraps. The controlled bending can increase the uniformity of the contact between the scroll members and improve the efficiency of the compressing operation.

The invention discloses a distiller's yeast drying device for distiller's yeast processing, which relates to the technical field of distiller's yeast processing, and comprises a mounting plate, on which a raw material box, a drying tank and a drying tank are installed, and a lifting assembly is installed on the raw material box. In addition, a material turning assembly is installed on the drying tank, and the drying tank is connected with a turning drying mechanism, and a support stand is fixedly installed on one side of the outer wall of the raw material box; the present invention utilizes the provided lifting assembly to cooperate with the material cylinder, and can The koji to be dried is lifted from the raw material box at a uniform speed, and then falls into the drying tank through the guidance of the vibrating material guide assembly. During this process, the heating wire is turned on, so that the material cylinder and the drying tank have a higher temperature. The distiller's yeast can be heated and dried when it passes through its surface wall, and finally sent into the drying tank through the material receiving component to realize multi-stage and efficient drying treatment of the distiller's yeast, which is conducive to improving the drying quality of the distiller's yeast, in terms of uniformity and dryness All are well guaranteed.

The invention discloses a flushing device for a mechanical seal of a centrifugal pump, and belongs to the technical field of centrifugal pumps. The flushing device comprises a flushing pipe connected to the centrifugal pump; the liquid feeding end of the flushing pipe is connected with the outlet end of the centrifugal pump; the liquid discharging end of the flushing pipe is connected with the mechanical seal of the centrifugal pump; the flushing device is characterized in that the flushing pipe is connected with a tubular filter, a pressure gauge and a throttling orifice plate; the tubular filter is close to the outlet end of the centrifugal pump; the throttling orifice plate is close to the mechanical seal of the centrifugal pump; a first stop valve and a second stop valve are arranged on the flushing pipe; the first stop valve is positioned between the outlet end of the centrifugal pump and the tubular filter; and the second stop valve is positioned between the pressure gauge and the throttling orifice plate. The flushing device can both achieve a good cooling effect on the mechanical seal and prevent particle impurities from being deposited on the sealing surfaces of movable and fixed rings, thus effectively protecting the sealing surfaces of the movable and fixed rings, relieving wear and enhancing the sealing effect; and therefore, normal and stable operation of the centrifugal pump is guaranteed.

The invention discloses a method for testing optical fiber aging performance. The device comprises a test box, a box door is arranged at one end of the test box, and a visible window is arranged at the middle position of the box door, and both sides of the inside of the test box are provided with There is a fixing mechanism, and the optical fiber cable to be tested is detachably connected between the two fixing mechanisms, the length of the middle position of the optical fiber cable to be tested is greater than the distance between the two fixing mechanisms, and the test box is equipped with a temperature control mechanism The method includes the following steps: open the box door and place the optical fiber cable to be tested between the fixed plate and the positioning plate at both sides, and make the two ends of the optical fiber cable clamped and fixed by the silica gel pad by fastening the fixed plate and the positioning plate , close the door and start the temperature control mechanism. The present invention keeps the overall stability of the test box by interval spraying and blowing air to reduce the loss error, calculates and infers the anti-aging performance of the cable through the breaking time, and improves the convenience and effectiveness of the actual test.

A method for fabricating GaN-based LED is provided. The method first forms a first contact spreading metallic layer on top of the texturing surface of the p-type ohmic contact layer. The method then forms a second and a third contact spreading metallic layers on top of the first contact spreading layer. The p-type transparent metallic conductive layer composed of the three contact spreading metallic layers, after undergoing an alloying process within an oxygenic or nitrogenous environment under a high temperature, would have a superior conductivity. The p-type transparent metallic conductive layer could enhance the lateral contact uniformity between the p-type metallic electrode and the p-type ohmic contact layer, so as to avoid the localized light emission resulted from the uneven distribution of the second contact spreading metallic layer within the third contact spreading metallic layer. The GaN-based LED's working voltage and external quantum efficiency are also significantly improved.

The invention discloses a chemical mechanical polishing pad and a chemical mechanical polishing method, belonging to the field of chemical mechanical polishing. The polishing pad at least comprises a nano-fiber layer which is in a non-woven fabric structure, the thickness of the fiber layer is 0.1mum-3cm, the average diameter of a nano-fiber is 1nm-1mum, the length of the nano-fiber is more than 1cm, and the axial direction of the nano-fiber is in parallel to a working surface of the polishing pad. The chemical mechanical polishing method comprises the following steps: a polishing solution is applied on the working surface of the polishing pad or on the surface of a polished material; and the working surface of the polishing pad is in contact with the surface of the polished material, and the polishing pad can move relative to the polished material, so that the chemical mechanical polishing is carried out on the polished material under lower pressure or super-low pressure. With the adoption of the polishing pad, the defects such as scratch damage and stress peeling can be reduced so as to obtain the surface with higher quality; meanwhile, higher material removal speed can be obtained under lower pressure.