6results about How to "Stable atmosphere" patented technology

This utility model provides a closed transfer and discharge device for acyl chloride reaction liquid, specifically relating to the field of acyl chloride reaction liquid technology. It includes a reaction tank, a receiving tank, a closed pipeline, and a discharge pipeline. The device is characterized by: four sets of support legs fixedly welded around the outside of the reaction tank for suspending it above the ground; a discharge port at the bottom of the reaction tank; and an inert gas inlet A, a first exhaust port, and a first pressure balance port at the top. A receiving tank is located on one side of the reaction tank, with a feed inlet on its surface. The feed inlet is connected to the discharge port at the bottom of the reaction tank via a closed pipeline. This utility model connects the discharge port of the reaction tank and the feed inlet of the receiving tank via a closed pipeline, and uses a sealing flange at the connection for efficient sealing, ensuring that the reaction liquid is completely sealed throughout the transfer process from the reaction tank to the receiving tank, thoroughly isolating it from external air and moisture.

This invention discloses an organic food growth atmosphere control device, including a gas distributor and a gas concentration analyzer. The gas distributor provides growth conditioning gas to the gas-using equipment. The inlet of the gas distributor is connected to a growth conditioning gas source, and multiple outlets of the gas distributor are evenly distributed within the gas-using equipment. The gas concentration analyzer detects the concentration of the growth conditioning gas inside the gas-using equipment, and the gas distributor adjusts the concentration of the growth conditioning gas inside the gas-using equipment based on the data from the gas concentration analyzer. This invention can precisely control the gas concentration inside the gas-using equipment and simultaneously replenish gas to the equipment in real time based on the detection results of the gas concentration analyzer, effectively ensuring a stable internal atmosphere and consistent concentration within the gas-using equipment.

The invention relates to the technical field of chip packaging, and provides an MEMS gyroscope bonding method which comprises the following steps: an MEMS gyroscope base material enters a positive pressure formic acid cleaning cavity, and the MEMS gyroscope base material executes a positive pressure formic acid cleaning step; the MEMS gyroscope base material enters a vacuum cavity of the plasma cleaning machine, and the MEMS gyroscope base material executes a plasma activation step; the MEMS gyroscope base material enters the vacuum cavity of the bonding machine, and the MEMS gyroscope base material executes the bonding step. Water and organic pollutants adsorbed on the surface can be effectively removed, the substances are easy to volatilize in a high-temperature environment to generate gas, and the quality of the produced MEMS gyroscope is high.

The invention relates to a water heater air volume self-adaption method and device, computer equipment and a storage medium. The method comprises the steps that in the operation process of a draught fan, if a draught fan rotating speed change instruction is received, the target rotating speed PWM duty ratio of the draught fan is obtained; calculating a PWM duty ratio difference value between the PWM duty ratio of the current rotating speed and a preset PWM duty ratio of a target rotating speed; determining target braking time based on the PWM duty ratio difference value; and within the target braking time, the operation rotating speed of the fan is adjusted in a self-adaptive mode based on a preset fan speed adjusting curve. According to the method, the fan rotating speed can reach the target value quickly, the gas adjusting process is accelerated, the problem of temperature overshoot caused by combustion heat exchange inertia caused by fan rotating speed adjustment and inertia is fully solved, the problem of slow rotating speed switching in the sweeping process before ignition is further solved, the ignition success rate is increased, and the ignition efficiency is improved. And the use comfort and reliability of the water heater are ensured.

The invention relates to the technical field of porous graphite preparation, in particular to a preparation method of fiber porous graphite for semiconductor-grade silicon carbide crystal growth, which comprises the following steps: S1, carbon fiber pretreatment: selecting high-purity PAN (polyacrylonitrile)-based fibers or pitch-based fibers as raw materials, placing the long-fiber raw materials on a high-precision shearing machine, and shearing to obtain carbon fibers; the method comprises the following steps: cutting short-filament fiber bundles with the length of 30-50mm into short-filament fiber bundles, uniformly putting the cut short-filament fiber bundles into a fiber beater which is provided with a toothed claw-shaped structure rotating at a high speed, and mechanically beating the fiber bundles at the rotating speed of 1500-2000r / min by the toothed claw-shaped structure under the driving of a high-power motor, a natural pore structure formed by a carbon fiber bridge is used as a pore-forming mode of porous graphite, a pore-forming agent does not need to be added, and due to the fact that the diameter of carbon fibers is consistent, the pore size of formed pores and the proportion of the formed pores can be accurately controlled by controlling the dispersion degree of the fibers.

The present application provides a vertical furnace segmented cooling and staged heat recycling system and method, the vertical furnace segmented cooling and staged heat recycling system comprising: a vertical furnace having a reduction zone and a cooling zone from top to bottom; a feeding bin arranged at the top inlet of the vertical furnace and a cooler arranged at the bottom outlet of the vertical furnace; a first-stage cooling and heat recycling unit having a first gas supply pipe communicated with the lower part of the cooling zone and a first heat recovery pipe communicated with the upper part of the cooling zone and the upper part of the reduction zone; and a second-stage cooling and heat recycling unit having a second gas supply pipe communicated with the inlet of the cooler and a second heat recovery pipe communicated with the cooler and the feeding bin. The present application can solve the problem of insufficient heat recycling in the existing vertical furnace cooling system, resulting in energy waste.