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Oil seal structure at turbine end of supercharger

A supercharger turbine and supercharger technology, which is applied to the sealing of the engine, machine/engine, engine components, etc., can solve the problems of rotor solidification, affecting normal driving, etc., and achieve the effect of good oil sealing effect

Inactive Publication Date: 2010-04-14
TIANJIN JL RAILWAY TRANSPORT EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the volume of these accumulations reaches a certain level, the rotor will be solidified, and the supercharger will stop working, seriously affecting normal driving.

Method used

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  • Oil seal structure at turbine end of supercharger
  • Oil seal structure at turbine end of supercharger
  • Oil seal structure at turbine end of supercharger

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Embodiment Construction

[0022] structured as figure 1 , 2 The turbine end oil seal structure of a supercharger shown is a turbine end oil seal structure arranged on the supercharger rotor main shaft (11), which is close to the turbine (2.6) on the main shaft (11), and arranged in sequence from the turbine to the left Air seal ring (6), oil seal (3) and bearing (14) are arranged; Bearing seat (5) is arranged outside bearing (14) and oil seal (3); Main shaft (11) surface is arranged in turn from near turbine to left Five damping platforms: damping platform e, damping platform d, damping platform c, damping platform b, and damping platform a; there is a ring groove of carbon deposit oil sealing structure on the inner surface of the air seal ring (6) and the main shaft (11). (9), thread seal oil surface (10), the second centrifugal oil return chamber (7) and the first centrifugal oil return chamber (8); part of the inner diameter surface of the air seal ring (6) and the surface of the main shaft (11) T...

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Abstract

The invention relates to an oil seal structure at a turbine end of a supercharger, which is arranged on a main spindle of a rotor of the supercharger and near a turbine, wherein an air seal ring, an oil seal and a bearing are sequentially arranged from the turbine to the left; a bearing block is arranged outside the bearing and the oil seal; the oil seal consists of newly-designed oil return sinks of a first centrifugal damping oil return structure and a second centrifugal damping oil return structure; and the bearing block is provided with newly-designed oil return passages of an oil mist removing oil return structure, the first centrifugal damping oil return structure and the second centrifugal damping oil return structure. The oil seal structure at a turbine end of a supercharger adopts the oil seal consisting of the newly-designed oil return sinks of the first centrifugal damping oil return structure and the second centrifugal damping oil return structure, the oil mist removing oil return structure, a carbon oil sealing structure, the threaded oil seal partly changed on the basis of the original structure as well as a second centrifugal oil return cavity and a first centrifugal oil return cavity which are changed, and adopts a reasonable dimension chain in the axial position so as to effectively carry out oil seal when the main spindle rotates, thereby ensuring that a diesel engine runs at normal power and ensuring the road safety.

Description

technical field [0001] The invention belongs to matching parts of diesel engines, in particular to a turbine end oil seal structure of a supercharger. Background technique [0002] With the adjustment of the running speed of the locomotive by the Ministry of Railways, the safety of the locomotive operation has become prominent. Therefore, the Ministry of Railways has put forward higher requirements for the reliability and safety of locomotive accessories. The supercharger is an important part of the locomotive diesel engine, which directly affects the running speed and driving safety of the locomotive. Oil leakage from the turbine end of the supercharger rotor caused the diesel engine to fail to work normally and affected the normal operation of the locomotive. [0003] The oil-sealed structure of the turbocharger can only seal the oil when the diesel engine is at the rated speed. When the diesel engine is idling for a long time, a certain negative pressure will be generate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02B39/00F16J15/16
Inventor 赵永泰
Owner TIANJIN JL RAILWAY TRANSPORT EQUIP
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