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Large high temperature and high pressure rotary joint

A rotary joint, large-scale technology, used in drying solid materials, lighting and heating equipment, drying and other directions, can solve problems such as inability to adapt to large-scale production, unstable performance, and inability to match dryers, achieving compensation and buffering. The effect of good performance, long service life, simple installation and maintenance

Active Publication Date: 2015-09-30
TIANHUA INST OF CHEM MACHINERY & AUTOMATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

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.

Method used

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  • Large high temperature and high pressure rotary joint
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Embodiment Construction

[0018] Below, the content of the present invention will be further described in conjunction with the accompanying drawings:

[0019] like Figure 1-2 As shown, a rotary joint for a large dryer is mainly composed of a graphite ring group 1, a gasket 2, a stationary ring 3, a transmission screw 4, a connecting flange 5, a transmission flange 6, a key 7, and a taper half ring 8 , steam shaft assembly 9, front bearing stuffing box 10, split half stop ring 11, spherical moving ring 12, wedge ring 13, outer cylinder 14, split half snap ring 15, transmission seat 16, spring seat 17, spring guide post 18. Push ring 19, rear bearing and sealing box 20, stuffing box 21, stuffing 22, spacer ring 23, stuffing gland 24, steam inlet pipe 25, condensate outlet pipe 26, graphite bushing 27, spring 28, graphite Ring outer hoop 29 forms. The steam shaft assembly 9 is a central jacketed pipe structure, which are steam channels and condensate channels respectively. The steam shaft assembly 9 ha...

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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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16L39/06
CPCF16L39/06F26B25/00
Inventor 刘世平窦岩令永功张岩
Owner TIANHUA INST OF CHEM MACHINERY & AUTOMATION
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