Negative pressure water suction device for material

Abstract

The invention discloses a negative pressure water suction device for a material. The negative pressure water suction device comprises a pressure-bearing cylinder, a seal cover, a water tank and vacuum pumping equipment, wherein a negative pressure pipe is arranged on each of the two sides of the pressure-bearing cylinder and is respectively connected with the water tank and the vacuum pumping equipment, and an air inlet valve and a water inlet valve are arranged on the negative pressure pipe; a water escape valve is arranged at the lower part of the side wall of the pressure-bearing cylinder; a vacuum pressure gauge and a pressure release valve are arranged at the upper part of the seal cover; a sealing washer is arranged on the periphery where the seal cover is in contact with the pressure-bearing cylinder; two hooks are arranged on each of the opposite cylinder walls of the pressure-bearing cylinder, and a stainless steel rod with a circular ring at each of the two ends is arranged at each of the hooks. The negative pressure water suction device disclosed by the invention is simple in structure and easy to operate and can be widely used in the negative pressure water immersion test of the material.

Description

Technical field [0001] The invention relates to the field of civil engineering, in particular to a material negative pressure water absorption device. Background technique [0002] China's permafrost is widely distributed, and its area accounts for 21.5% of the country's land area. In recent years, with the development of my country's economic construction and the implementation of policies for the development of the western region, the number of construction projects in the field of underground engineering has increased day by day, especially for roads and railway tunnels in cold areas. The investigation of the already operating road tunnels in cold areas found that more than 80% of the cold area tunnels have various frost damages. Among them, 60% of the tunnels have leakage, and about 24% of the lining concrete peeling, cracking, and slipping. Problems such as collapse and subsidence. Each year, various regions and related transportation companies have a staggering amount of ...

AI Technical Summary

Problems solved by technology

In summary, it is of great engineering significance to develop a water immersion test equipment for this type of material under different pressures in combination with the actual application of thermal insulation materials and its environmental conditions, and then analyze its thermal insulation performance on this basis. There is no equipment on the market for the indoor water immersion test of materials under negative pressure conditions

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