一种泥水盾构盾尾刷更换液氮冻结安全保护装置

• Format: Patent
• Language: Chinese
• Published: 21.01.2025
• Subjects: BLASTING; COLD ROOMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; COOLING OR FREEZING APPARATUS NOT COVERED BY ANY OTHERSUBCLASS; EARTH DRILLING; FIXED CONSTRUCTIONS; GALLERIES; HEAT PUMP SYSTEMS; HEATING; ICE-BOXES; LARGE UNDERGROUND CHAMBERS; LIGHTING; LIQUEFACTION SOLIDIFICATION OF GASES; MANUFACTURE OR STORAGE OF ICE; MECHANICAL ENGINEERING; MINING; REFRIGERATION OR COOLING; REFRIGERATORS; SHAFTS; TUNNELS; WEAPONS

本发明公开了一种泥水盾构盾尾刷更换液氮冻结安全保护装置，涉及盾构机技术领域，特包括由外而内布置的盾构机壳体、盾构刷以及管片，还包括冻结部件，该冻结部件包括储液箱、若干个液氮循环回路以及通过相应所述液氮循环回路进行冷却的若干道冷却板，各所述冷却板布置在所述盾构机壳体上，所述储液箱内部布置相互平行的第一承载板和第二承载板，所述第一承载板布置有多个第一限位孔，所述第二承载板布置有多个第二限位孔，所述第二承载板固定在所述储液箱内，所述第一承载板通过调节组件可在所述储液箱内移动。本发明改变冻结部件对泥水的冷冻效果，在高水压条件下，使泥水的冷冻效果可控，更换盾尾刷时，可避免泥水进入盾构机内部。 The invention discloses a liquid nitrogen freezing safety protection device during slurry shield tail brush replacement, and relates to the technical field of shield tunneling machines. The liquid nitrogen freezing safety protection device particularly comprises a shield tunneling machine shell, a shield brush and a segment which are arranged from outside to inside, and further comprises a freezing part; and the freezing part comprises a liquid storage tank, a plurality of liquid nitrogen circulating loops and a plurality of cooling plates cooled through the corresponding liquid nitrogen circulating loops, all the cooling plates are arranged on the shield tunneling machine shell, a first bearing plate and a second beari