CRYOGENIC LIQUID GAS INJECTION STATE ADJUSTMENT METHOD AND CRYOGENIC LIQUID GAS INJECTION DEVICE

• Main Authors: WADA YOSHIFUMI, WADA YOSHIYUKI
• Format: Patent
• Language: English; Japanese
• Published: 04.08.2016
• Subjects: APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL; ATOMISING APPARATUS; BLASTING; COLD ROOMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; COOLING OR FREEZING APPARATUS NOT COVERED BY ANY OTHERSUBCLASS; HEAT PUMP SYSTEMS; HEATING; ICE-BOXES; LIGHTING; LIQUEFACTION SOLIDIFICATION OF GASES; MANUFACTURE OR STORAGE OF ICE; MECHANICAL ENGINEERING; NOZZLES; PERFORMING OPERATIONS; REFRIGERATION OR COOLING; REFRIGERATORS; SPRAYING APPARATUS; SPRAYING OR ATOMISING IN GENERAL; TRANSPORTING; WEAPONS

PROBLEM TO BE SOLVED: To enable liquefied nitrogen injected from a device to be easily adjusted to strike against a cooled object under its mist state even if a required injection flow rate of the liquefied nitrogen is determined in advance.SOLUTION: This invention relates to an adjustment method performed by using a liquefied nitrogen injection device 1 having removably installed injection pipe 2 for injecting liquefied nitrogen. The liquefied nitrogen is injected by the injection device 1 continuously from the injection pipe 2 for a predetermined time, and upon elapsing the predetermined time, if the liquefied nitrogen being injected from the injection pipe 2 is kept in liquid state at a position of a cooled object 29, the injection pipe 2 is replaced with another injection pipe longer than the former. In turn, when the liquefied nitrogen being injected from the injection pipe 2 is gasified after elapsing the predetermined time and does not reach the position of the cooled object 29, the injection pipe is replaced with another injection pipe shorter than the former.SELECTED DRAWING: Figure 3 【課題】予め必要とされる液化窒素の噴射流量が決められていても、装置から噴射された液化窒素が被冷却物にミスト状態で衝突するように調整することが容易にできること。【解決手段】液化窒素を噴射する噴射パイプ２を着脱可能に備えた液化窒素噴射装置１を用いて実施する調整方法であって、噴射装置１によって、噴射パイプ２から液化窒素を所定時間連続的に噴射させ、所定時間経過後に、噴射パイプ２から噴射されている液化窒素が被冷却物２９の位置で液体状態にあるときは、当該噴射パイプ２をこれより長いものに交換する。一方、所定時間経過後に、噴射パイプ２から噴射されている液化窒素が気化して被冷却物２９の位置まで到達しないときは、当該噴射パイプをこれより短いものに交換する。【選択図】図３