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Method for calculating compression ratio of shaft sealing ring

A calculation method and sealing ring technology, which are applied in the direction of engine sealing, complex mathematical operations, mechanical equipment, etc., can solve the problems of affecting the compression amount of the sealing ring, affecting the groove depth, affecting the sealing performance of the product, etc., so as to reduce the oil leakage rate. , minimum compression rate accurate effect

Pending Publication Date: 2022-07-22
HARBIN DONGAN ENGINE GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in reality, there is an assembly eccentricity between the outer diameter of the shaft and the hole, and there is a processing eccentricity between the outer diameter of the shaft and the shaft groove. Both the assembly eccentricity and the processing eccentricity are radial eccentricities, which affect the groove depth that is also set radially, thus affecting the minimum pull. elongation and maximum elongation, and affect the compression rate of the sealing ring, which leads to inconsistent calculation results in practical applications, affects the calculation of the compression of the sealing ring, and ultimately affects the sealing performance of the product

Method used

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  • Method for calculating compression ratio of shaft sealing ring
  • Method for calculating compression ratio of shaft sealing ring
  • Method for calculating compression ratio of shaft sealing ring

Examples

Experimental program
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Effect test

Embodiment 1

[0034] A shaft groove sealing structure such as figure 2 , the known sealing ring section diameter d=φ2.1±0.08, the nominal inner diameter of the sealing ring Nominal inside diameter of the hole Nominal outer diameter of shaft Bottom diameter D of shaft groove 1 =φ8.2±0.07, the coaxiality e of the shaft groove centerline with respect to the shaft centerline=φ0.05.

[0035] Among them, the following steps involve parameters: D 1min , D 1max Indicates the minimum and maximum value of the bottom diameter of the shaft groove, d min , d max Indicates the minimum and maximum diameter of the sealing ring section, D min , D max Indicates the minimum and maximum inner diameter of the sealing ring, D Dmin , D Dmax is the minimum and maximum value of the inner diameter of the assembly hole, D dmin is the minimum value of the shaft outer diameter.

[0036] In this embodiment, the sealing ring is in the minimum compression state, and the calculation steps of the minimum com...

Embodiment 2

[0058] Embodiment 2, this embodiment is similar to Embodiment 1, except that the sealing ring is installed in the hole groove inside the casing, and the hole groove sealing structure is as follows: Figure 4 , Figure 5 As shown, the known sealing ring section diameter d=φ1.9±0.1, the nominal inner diameter of the sealing ring Nominal inside diameter of the hole Nominal outer diameter of shaft Bottom diameter of the hole The coaxiality e=φ0.08 of the hole and groove centerline relative to the hole centerline.

[0059] Among them, the following steps involve parameters: D dmin , D dmax are the minimum and maximum outside diameter of the seal shaft, d min , d max is the minimum and maximum diameter of the sealing ring section, D min , D max is the minimum and maximum value of the inner diameter of the sealing ring, D 2min , D 2max is the minimum and maximum value of the bottom diameter of the hole groove, D Dmax is the maximum value of the inner diameter of the...

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Abstract

The invention belongs to a shaft sealing technology, and particularly relates to a method for calculating the compression ratio of a shaft groove sealing ring. According to the method for calculating the compression ratio of the shaft groove sealing ring, the assembling eccentricity and the machining eccentricity are obtained, the depth parameter of the radial groove formed after assembling is calculated, when the compression ratio of the sealing ring is calculated, the assembling eccentricity and the machining eccentricity are added into the depth parameter of the radial groove, and the actual depth of the radial groove is obtained; and calculating the compression ratio of the sealing ring by using the actual depth of the radial groove and the radial size of the section of the sealing ring. According to the method provided by the invention, the limit condition of assembly can be better reflected, the calculated minimum compression ratio is more accurate, an important reference basis can be provided for the design of a sealing structure, and the oil leakage rate is reduced.

Description

technical field [0001] The invention belongs to the shaft sealing technology, in particular to a method for calculating the compression ratio of a shaft sealing ring. Background technique [0002] The sealing ring is a commonly used sealing device and is widely used in various occasions where sealing is required. However, in order to ensure the sealing effect, the performance of the sealing ring needs to be studied, so the calculation of the compression rate of the sealing ring is involved. In the existing engineering design process, such as figure 1 The sealing structure of the shaft groove is calculated according to the standard HB / Z 4-95 "Design requirements for O-ring and sealing structure". [0003] (1) The specific method for calculating the minimum compression ratio is as follows: [0004] 1) Calculate the elongation rate after the O-ring is assembled to the shaft groove [0005] 2) Radial dimension of sealing ring section [0006] 3) Groove depth [0007]...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/10F16J15/00
CPCG06F17/10F16J15/00
Inventor 马银玲张冰田硕杨俊涛冯欣颖
Owner HARBIN DONGAN ENGINE GRP
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