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Pre-tightening optimization method of bolt connecting component

A technology for connecting components and optimization methods, applied in design optimization/simulation, special data processing applications, instruments, etc., can solve problems such as increasing device energy consumption, equipment shutdown, polluting the environment, and achieve the effect of improving sealing performance

Inactive Publication Date: 2017-02-22
CHINA SPECIAL EQUIP INSPECTION & RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The seal leakage of the bolt-flange-gasket connection structure not only increases the energy consumption of the device, pollutes the environment, but also directly affects the safe and stable operation of the production equipment and the safety and health of production operators
In recent years, flange sealing failures have caused many serious accidents. For example, flange sealing failures frequently occurred in S-Zorb units of petrochemical enterprises such as Yanshan Petrochemical, Qilu Petrochemical, Tianjin Petrochemical, etc., resulting in fire accidents, equipment shutdowns, and serious economic losses.

Method used

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  • Pre-tightening optimization method of bolt connecting component
  • Pre-tightening optimization method of bolt connecting component
  • Pre-tightening optimization method of bolt connecting component

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Embodiment Construction

[0027] Specific embodiments of the present invention will be described below in conjunction with the accompanying drawings.

[0028] figure 1 It is a structural schematic diagram of the bolt connection assembly of the present invention. like figure 1 As shown, the bolted connection assembly of the present invention includes two connecting pieces 1 , the two connecting pieces are fixedly connected by a bolt group 3 , and a gasket 2 is arranged between the contact surfaces of the two connecting pieces 1 . In the present invention, the connecting piece can be a flange, and there are multiple bolt groups 3, including studs and nuts matched therewith. In this way, the bolted connection assembly of the present invention can also be referred to as a bolted flange connection structure. This structure mainly uses the clamping force generated by tightening the bolts to form a tight connection between the upper and lower flanges and the sealing gasket. Cover, so as to achieve the purp...

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Abstract

The invention provides a pre-tightening optimization method of a bolt connecting component. The bolt connecting component comprises two connecting pieces, the two connecting pieces are fixedly connected with each other through a bolt component, a flexible graphite metal wave gear composite gasket is arranged between the contact surfaces of the two connecting pieces, wherein the pre-tightening force of a bolt affected by negative elastic interaction is corrected by a correction factor in the process of tightening the connecting pieces through the bolt. According to the pre-tightening optimization method disclosed by the invention, the bolt force obtained by the bolt after every round of loading is finished is close to the target bolt force and is in concentrated distribution, and the inner side and the outer side of the gasket can obtain uniform contact stress.

Description

technical field [0001] The invention relates to a preload optimization method of a bolt connection assembly, in particular to a preload optimization method for correcting the preload of a flange connection system using a flexible graphite metal corrugated tooth composite gasket. Background technique [0002] The bolted flange connection structure composed of bolts, flanges and gaskets is a static sealing form widely used in the petrochemical industry, and is often used for the sealed connection of pressure vessels, pressure pipes and valves. Survey data show that a large petrochemical company has dozens or even millions of sealing structures. The sealing leakage of the bolt-flange-gasket connection structure not only increases the energy consumption of the device, pollutes the environment, but also directly affects the safe and stable operation of the production equipment and the safety and health of production operators. In recent years, flange sealing failures have caused...

Claims

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/23
Inventor 李翔李军庄法坤陈志伟陆旸马歆幺成李介普
Owner CHINA SPECIAL EQUIP INSPECTION & RES INST
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