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Method for repairing diesel engine cylinder Glan hole defect

A repair method and diesel engine technology, applied in the field of diesel engines, can solve problems such as unreachable

Inactive Publication Date: 2009-06-03
HUDONG HEAVY MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the conventional inserting method often adopts the method of making a material sleeve with a certain amount of interference, and then inserting the material sleeve cooled with liquid nitrogen into the defect for repair. Although the strength is guaranteed, it cannot achieve watertightness and oil tightness. requirements

Method used

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  • Method for repairing diesel engine cylinder Glan hole defect
  • Method for repairing diesel engine cylinder Glan hole defect
  • Method for repairing diesel engine cylinder Glan hole defect

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Embodiment Construction

[0028] A method for repairing granholes of a diesel engine cylinder block according to the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments, but this should not limit the protection scope of the present invention.

[0029] The gland hole of the cylinder body is located on the lower plane of the cylinder body, and the piston rod-stuffing box assembly will be installed, and the stuffing box lubricating oil will flow in the oil chamber formed between the gland hole and the stuffing box. Since the cylinder block is a large casting, the gland hole is located on the riser surface. After the cylinder block is cast, it is easy to have casting defects at the position of the gland hole, and processing defects such as stem knives may also be caused by mistakes during processing. If there is a defect and it is not repaired, it will fail to meet the design requirements due to oil leakage, and cause the entire ...

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Abstract

The invention relates to a method for repairing a diesel engine cylinder Glan hole defect. The method comprises the steps as follows: 1. the position of a defect at a cylinder is found out, and the defect part is bored; 2. a bored surface is drilled with a plurality of screw holes and positioning pin holes; 3. an annular tubular bush fitting is manufactured, one end face of the bush fitting is provided with an annular groove as a seal groove, and the external circle of the bush fitting is drilled with same screw holes and positioning pin holes as that on the bored surface of the cylinder; 4. a sealing strip is embedded in a sealing ring, and then the bush fitting is arranged at the position of a Glan hole of the cylinder to ensure that the sealing ring is arranged on an interface and is fixed by an assembly bolt and a positioning pin; and 5. the cylinder is rebored to the size meeting the drawing requirement for removing burrs and repairing the external surface to ensure the natural transition between the bush fitting and the cylinder. The invention ensures that a joint between the bush fitting and the cylinder has good sealing performance, thereby not only meeting the strength requirement of the Glan hole of the cylinder, but also being capable of standing hydraulic pressure and oil pressure.

Description

technical field [0001] The present invention relates to a diesel engine, in particular to a method used in the manufacture or repair of a cylinder block of a diesel engine. The method belongs to an improvement of a traditional process, and solves the problem of water leakage and oil leakage after repair, and has obvious advantages. Use value and economic value. Background technique [0002] Cylinder block diesel engine, especially one of the main fixing parts of marine large-bore diesel engine. In the model 60MCC diesel engine, the weight of each cylinder block reaches 15 tons, and the overall weight of the cylinder block occupies a large proportion in the total weight of the diesel engine. [0003] The working cycle of the diesel engine is carried out in the working space of the cylinder block, and the piston reciprocates in the cylinder block, which determines that the working conditions of the cylinder block are very bad. During the entire service life, the cylinder blo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P6/02
Inventor 王晓妹俞三喜
Owner HUDONG HEAVY MACHINERY
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