Liquefied air storage system and method

The invention relates to the technical field of industrial gas, in particular to a liquefied air storage system and method.The liquefied air storage system comprises a storage device, a reliquefaction device and a refrigeration device.The storage device comprises a storage tank suitable for storing liquid air, and the storage tank is provided with a first inlet and a first outlet; the reliquefaction device comprises a reliquefaction device provided with a second inlet and a second outlet, the second inlet is communicated with the first outlet, the second outlet is communicated with the first inlet, the refrigeration device comprises a liquid nitrogen tank suitable for containing liquid nitrogen, and the liquid nitrogen tank is connected with the reliquefaction device to cool the reliquefaction device. Gaseous air in the storage tank has an overflow state of overflowing towards the re-liquefier side along the first outlet and the second inlet, and liquid air in the re-liquefier has a backflow ...

Earthworm extract with wound healing effect

The invention discloses an earthworm extract with a wound healing effect, which is extracted after living earthworms are cut. The earthworm extract can be prepared into external preparations and oral preparations, such as capsules, tablets, pills, granules, oral liquid and other various pharmaceutically acceptable dosage forms, by adding conventional auxiliary materials according to a conventional process in an independent manner or a combined manner or in a manner of combining with any other Chinese and Western medicaments according to any proportion. An earthworm extract solution provided by the invention can accelerate wound healing of a mouse and has a repair effect stronger than that extracted from non-cut earthworms.

SPECIALLY WEARING FLOATING OIL SEAL RING

SPECIALLY WEARING FLOATING OIL SEAL RING

Experimental device and experimental method for measuring static lateral pressure of soil body

The invention relates to the technical field of soil static lateral pressure measurement, in particular to an experimental device and an experimental method for measuring the soil static lateral pressure. The experimental device for measuring the static lateral pressure of the soil body comprises a volume body, a pressure applying unit, a static lateral pressure measuring unit and a soil body humidity control unit. And an open cavity for placing a soil body to be experimented is formed in the volume body. Under the action of the pressure applying unit, the static side pressure of the to-be-tested soil body changes, and the static side pressure measuring unit measures and records the static side pressure in real time. The soil body humidity control unit comprises a pressure water supply pipe and a lower permeable stone plate. The lower permeable stone plate is horizontally arranged in the open cavity, is used as a bedding foundation of a soil body to be experimented, and is deeply penetrated ...

Earthworm extract with wound healing effect

The invention discloses an earthworm extract with a wound healing effect, which is extracted after living earthworms are cut. The earthworm extract can be prepared into external preparations and oral preparations, such as capsules, tablets, pills, granules, oral liquid and other various pharmaceutically acceptable dosage forms, by adding conventional auxiliary materials according to a conventional process in an independent manner or a combined manner or in a manner of combining with any other Chinese and Western medicaments according to any proportion. An earthworm extract solution provided by the invention can accelerate wound healing of a mouse and has a repair effect stronger than that extracted from non-cut earthworms.