Large high temperature and high pressure rotary joint

Abstract

The invention discloses a large-sized high-temperature and high-pressure rotary joint, and relates to a rotary joint for a large-sized drying machine. The large-sized high-temperature and high-pressure rotary joint is structurally characterized by having a sealing structure consisting of a steam shaft of a central jacketed pipe and three groups of spherical dynamic and static rings; sealing surfaces between the spherical dynamic and static rings are compressed through springs on spring guide pillars on a steam side and a condensate side respectively, and the steam side and the condensate side are separated fully; steam flows through the jacketed pipe while the condensate flows through a central pipe; the central jacketed pipe rotates along with drying machine equipment, and a shell is connected with a steam pipeline and a condensate pipeline; the steam is introduced into the steam pipeline while the condensate is drained from the condensate pipeline. Secondly, various states of the dynamic and static sealing ring are compensated by the springs in a using state, and an auxiliary filler sealing device is designed, so that the accidental damage caused by leakage of a large amount of steam after wear of concave and convex rings is prevented. A three-end-face sealing technology is adopted, so that the sealing structure is compact and reliable, can adapt to the working condition of high-temperature, high-pressure and large-size sealing, and is long in service life.

Description

technical field

[0001] The invention relates to the field of steam rotary joints of large dryer equipment, and is a high-temperature and high-pressure rotary mechanical seal structure that collects steam entry and condensate discharge. Background technique

[0002] As a dynamic and static device, the rotary joint connects the main engine with the discharge of steam and condensate. It is an important part of the transmission medium and is widely used in chemical, metallurgy, steel, paper and other industries. The currently used rotary joint has a simple sealing structure, unstable performance, easy leakage, short service life, and small flow rate. It cannot be matched with large or super large dryers, that is, it cannot meet the needs of large-scale production. Contents of the invention

[0003] Aiming at the defects of the existing large-scale dryer rotary joint, the purpose of the present invention is to provide a large-scale dryer rotary joint. This kind of rotary joint...

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