A method for online detection of diesel engine stuffing box tightness

A detection method and stuffing box technology, which is applied in the direction of liquid tightness measurement using liquid/vacuum degree, and by measuring the increase and deceleration rate of the fluid, etc., can solve the problems of power reduction, increased maintenance time of ships at ports, and excessive oil consumption. , to avoid misjudgment, improve work efficiency and economy, and improve self-diagnosis level

Active Publication Date: 2018-04-13
HUAWEI TEHCHNOLOGIES CO LTD
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Problems solved by technology

As a result, if the seal ring is replaced frequently, it will not only waste diesel engine spare parts, but also increase the maintenance time of the ship at port; if the seal ring is replaced late, the air leakage of the gas ring will increase, resulting in weak compression of the piston, power drop, and oil ring Increased oil leakage and excessive oil loss

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  • A method for online detection of diesel engine stuffing box tightness
  • A method for online detection of diesel engine stuffing box tightness
  • A method for online detection of diesel engine stuffing box tightness

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Embodiment Construction

[0027] 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.

[0028] Such as figure 1 and 2 As shown, it is a kind of diesel engine stuffing box tightness detection device used in the online detection method of two-stroke diesel engine piston rod stuffing box tightness of the present invention, including a cylinder diaphragm installed in the body of the diesel engine and provided with a through hole 1. The stuffing box 4 and the external control box of the diesel engine body. The stuffing box 4 is centered with a small through hole at both ends and a large middle, and a cylindrical shape with a large flange at the lower end of the outer circle and a small flange at the upper end; The small flange is tightly connected with the throu...

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Abstract

The invention discloses an online detection method for the sealing performance of a stuffing box of a diesel engine. Firstly, the detection values ​​of a pressure sensor and a liquid level sensor in a detection device are set, and then the diesel engine is started. Judgment and alarm based on the detection value of the liquid level sensor, and provide and display the signal for replacing the gas ring or oil ring. The invention realizes the "quantitative" detection of the wear amount of the gas ring and the oil ring of the stuffing box through online detection of the oil and gas leaked in the stuffing box, and provides a scientific and accurate method for the replacement of the gas ring or oil ring of the stuffing box Based on this, the misjudgment caused by judgment based on experience has been avoided for a long time, the working efficiency and economy of the engine have been improved, and the self-diagnosis level of the diesel engine has been improved.

Description

technical field [0001] The invention relates to an on-line detection method for the tightness of a diesel engine, in particular to an on-line detection method for a piston rod stuffing box of a crosshead two-stroke 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 c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M3/26
Inventor 张建唐文献李大保凌有临宋雅丽张志勇晏飞苏世杰
Owner HUAWEI TEHCHNOLOGIES CO LTD
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