77results about How to "Guaranteed temperature resistance" patented technology

The invention discloses a thermal recovery compensation sealed pipe column. The thermal recovery compensation sealed pipe column comprises an inner pipe and an outer pipe; the inner pipe is sleeved with the outer pipe; the lower end of the inner pipe extends out of the outer side of the outer pipe; a sealed corrugated pipe is arranged between the inner pipe and the outer pipe; a sealing system is arranged on the outer pipe, and comprises a seal sleeve; a sealing cavity is formed inside the seal sleeve; independent sealing grooves are respectively formed in the upper end and the lower end of the sealing cavity; seal rings are mounted in the sealing grooves, and adopt fluoroether rubber seal rings; an injecting hole leading to the sealing cavity is formed in the seal sleeve. The thermal recovery compensation sealed pipe column has the advantages that the outer contact surface of the inner pipe is subjected to chromate finish, so that the abrasive resistance, the anti-corrosion property, the leakproofness and the like are improved, high temperature steam is prevented from corroding the contact surface, and the sealing problem due to friction which is caused by the fact that the inner pipe and the outer pipe displace, is prevented; the stainless steel sealed corrugated pipe is designed between the inner pipe and the outer pipe, and connects the inner pipe with the outer pipe through welding, the outer pipe is provided with an inner seal sleeve, and the sealed corrugated pipe is made of austenitic stainless steel. Therefore, the temperature resistance and the corrosion resistance of the sealed corrugated pipe are ensured.