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Stuffing box for piston rod of crosshead two-stroke diesel engine

A diesel engine and piston rod technology, applied in mechanical equipment, engine components, machines/engines, etc., can solve problems such as port sealing problems, avoid aggravation of air leakage and oil leakage, improve oil scraping effect, and reduce energy consumption. Effect

Active Publication Date: 2015-07-01
JIANGSU UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

” still doesn’t fix its port seal

Method used

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  • Stuffing box for piston rod of crosshead two-stroke diesel engine
  • Stuffing box for piston rod of crosshead two-stroke diesel engine
  • Stuffing box for piston rod of crosshead two-stroke diesel engine

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Embodiment Construction

[0028] In order to make the purpose and technical solutions of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings of the embodiments of the present invention. Apparently, the described embodiment is a typical embodiment of the present invention, but not all embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0029] Such as figure 1 , figure 2 , Image 6 , Figure 7As shown, a piston rod stuffing box of a crosshead two-stroke diesel engine includes a cylinder diaphragm 9 in a diesel engine body, a piston rod 1 and a stuffing box. The housing 5 of the stuffing box is composed of two connected semicircular rings with flanges at the lower end, and...

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Abstract

The invention discloses a stuffing box for a piston rod of a crosshead two-stroke diesel engine. The stuffing box comprises a housing which is formed by two connected semicircular rings with flanges on lower end parts, wherein the flanges are fixed on an air cylinder transverse partition plate through bolts; four ring slots are formed in the inner surface of the housing from top to bottom in the axial direction; gas vent holes and oil return holes extending to the outside of the housing are formed in the ring slots; gas rings are mounted in the upper two ring slots; oil rings are mounted in the lower two ring slots; the gas rings and the oil rings comprise a plurality of sections of ring arcs which are of positive and negative step structures lapped up and down; at least one ring-shaped circular arc slot is formed in the peripheral surfaces of the gas rings and the oil rings; the circular arc slots are tied to the outer circles of the piston rod through springs in the circular arc slots, and are embedded into the ring slots; ring-shaped bumps are arranged on the peripheries of the ring arcs of the gas rings; sealing rings which are embedded into the sealing slots in the bottom of the ring slots are further arranged on the outer peripheral surfaces of the bosses. The stuffing box is simple in structure, and the gas rings and the oil rings are remarkably improved in sealing effect and oil scraping effect.

Description

technical field [0001] The invention relates to a piston rod stuffing box of a crosshead two-stroke diesel engine, in particular to a piston rod stuffing box on a marine diesel engine, and belongs to the technical field of diesel engines. Background technique: [0002] A main engine of a crosshead two-stroke large-scale marine diesel engine usually has a plurality of cylinders, and a reciprocating piston is arranged in each cylinder. The piston is connected to the crosshead movably supported on the sliding track in the diesel engine casing through the piston rod, and the other end of the crosshead is connected to the crankshaft of the diesel engine through the connecting rod. There is also a cylinder diaphragm on the upper part, which separates the scavenging chamber in the body from the crankcase. In order to enable the piston rod to pass through the cylinder diaphragm in a sealed manner, a stuffing box is provided on the crossing hole of the cylinder diaphragm; the stuffin...

Claims

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Application Information

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IPC IPC(8): F02F11/00
CPCF02F11/00
Inventor 张建唐文献刘利军凌有临张志勇晏飞李大保刘旭
Owner JIANGSU UNIV OF SCI & TECH
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