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High-pressure-resistant wear-resisting contact type reciprocation sealing with washing ring

A high-pressure and wear-resistant technology, which is applied to parts of pumping devices for elastic fluids, variable displacement pump parts, machines/engines, etc., can solve the problems of easy failure of gland side packing, failure of solid particle wear, Problems such as uneven force distribution can avoid the failure of gland side packing, uniform contact stress and improve reliability

Inactive Publication Date: 2007-11-14
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem of uneven distribution of force on packing of reciprocating pumps in the prior art, easy failure of gland side packing and wear failure caused by solid particles entering the seal, the present invention provides a high-pressure resistant, wear-resistant contact type reciprocating seal with a flushing ring

Method used

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  • High-pressure-resistant wear-resisting contact type reciprocation sealing with washing ring
  • High-pressure-resistant wear-resisting contact type reciprocation sealing with washing ring

Examples

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Embodiment Construction

[0012] The sealing structure of the present invention is used as an intermediate prototype for the study of improving the sealing life of a reciprocating special pump for coal liquefaction. As shown in Figure 1, it is composed of a sleeve gap seal near the cylinder side, a main packing seal and a secondary packing seal near the atmosphere side. Composed in series, the front end of the main stuffing box 10 (that is, near the cylinder side) is equipped with two grooved guide sleeves 13, a flushing ring 12, a high-pressure flushing liquid inlet joint 11, two packings 9 and a backing ring 6 One group, four groups are housed in the main stuffing box, and the auxiliary stuffing box 4 is also the main stuffing gland at the same time. In the auxiliary stuffing box 4, a flushing ring 12 is installed, and a backing ring 6 is added on both sides of the three packings 9, and then it is compressed by the auxiliary stuffing gland 2, and the auxiliary stuffing box 4 is compressed by the main ...

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Abstract

A high pressure resistance and anti-abresive reciprocating seal with flushing ring relates to the lunger pistom of reciprocating pump and packing seal, it is characterized in that two set of packing seal combines with a set of muff clearance seal, namely two guide sleeve closing side of cylinder combines with a flushing ring and main packing seal with subsidiary packing seal closing air. The gland of main packing seal is a seal box of subsidiaty one. Injecting flushing lubricating oil into between main and subsidiary packing seal, the front-end of main packing seal has a flushing ring, which adopting synchronized hydraulic oil to be as flush fluid of packing box, the effect of flush fuid is that flushing the particle medium between lunger pistom and main packing seal, at the same tine between filling and lunger pistom formed a fluid film to avoid directing friction between filling and lunger pistom,and takes away heat caused by friction, which can prolong the life of seal. The invention is applicable to all conveyors solid particles media reciprocating pump.

Description

technical field [0001] The invention relates to a plunger and a packing seal of a reciprocating pump, in particular to a high-pressure resistant and wear-resistant contact reciprocating seal with a flushing ring, which is used for the plunger and packing seal of a reciprocating pump conveying solid particle media. Background technique [0002] For a long time, the plunger and packing seal of reciprocating pumps have always been important factors affecting the safe and reliable use of reciprocating pumps. According to the statistical analysis of reciprocating pump failures, the failure of plunger and packing seals accounts for more than half of the failures. Especially when the conveying medium of the pump is high temperature, high pressure, and contains solid particles, if the packing seal is used improperly, there will be problems such as serious leakage and short service life. Most of the traditional plunger and packing seal structures are shown in Figure 2 , the filling o...

Claims

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Application Information

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IPC IPC(8): F04B53/02
Inventor 叶晓琰许建强
Owner JIANGSU UNIV
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