Waveform movable pressing pretightening butterfly spring

A wave and butterfly spring technology, applied in the field of wave dynamic pressure preload butterfly spring, can solve the problems of lack of secondary elastic force and overload protection ability, low compensation ability, fatigue and other problems, to prevent major failure accidents and economic losses, improve Reliability and service life, the effect of a wide range of working conditions

Inactive Publication Date: 2010-06-09
超化公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The complete flat washer does not have compensation performance, the split washer only prevents the nut from loosening through the dislocation of the opening, and the pre-tightened butterfly spring, although it has a certain compensation performance, but because the cross-sectional shape is rectangular, after the initial flattening of the external pressure, It does not have secondary elastic force and overload protection ability, especially under the condition of alternating temperature and pressure, the compensation ability is small, and it is easy to cause fatigue and failure
The existence of the above shortcomings will cause the loosening of the fasteners and the serious leakage of the flange seal due to the loss of pre-tightening force, and the seal will fail.

Method used

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  • Waveform movable pressing pretightening butterfly spring
  • Waveform movable pressing pretightening butterfly spring
  • Waveform movable pressing pretightening butterfly spring

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] see figure 1 , The single-piece waveform dynamic pressure pre-tightened butterfly spring, the waveforms on the upper and lower sides of the back and the back are staggered and evenly arranged from the inner hole to the outer circumference. When the disc spring is compressed by force, the initial cone of the disc spring is flattened, and a corresponding primary rebound pre-tightening force is generated, and then the waveform of the disc spring tends to be flat, and a corresponding secondary active pressure is generated. The maximum load-bearing capacity of the elastic, wave-shaped live pressure preloaded disc spring is at least 3 times higher than that of the traditional disc spring, which greatly improves the preload safety guarantee and application range, as well as improves the reliability, safety and service life of the disc spring.

Embodiment 2

[0021] see figure 2 , The single-piece waveform dynamic pressure pre-tightened butterfly spring, the waveforms on the back of the upper and lower phases are staggered and evenly arranged in order from the outer radial to the inner hole. , when the disc spring is compressed by force, the initial cone of the disc spring is flattened, and a corresponding primary rebound preload is generated, and then the waveform of the disc spring tends to be flat, and a corresponding secondary active pressure is generated Rebound force, the maximum bearing capacity of the wave active preloaded disc spring is at least 3 times higher than that of the traditional disc spring, which greatly improves the preload safety guarantee and application range, as well as improves the reliability, safety and service life of the disc spring .

Embodiment 3

[0023] see image 3 , the waveforms on the back of the two upper and lower phases are staggered from the inner hole to the outer circumference, and the evenly arranged wave-shaped pre-tensioned butterfly springs are superimposed. , followed by the flattening of the disc spring's waviness. Its characteristics are that the distance of compression and rebound is unchanged, and the bearing capacity is doubled.

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PUM

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Abstract

The invention relates to a waveform movable pressing pretightening butterfly spring, which is arranged statically on a joint of a bolt and a fastened piece and is static relative to a contact component. The waveform movable pressing pretightening butterfly spring is characterized in that: the waveform movable pressing pretightening butterfly spring is a butterfly gasket; an inner hole and an excircle of the waveform movable pressing pretightening butterfly spring which has uniform thickness have a shape of cone; upper and lower reverse surfaces are both waveform surfaces; each surface is at least provided with more than one complete waveform; each waveform has resilience capacity; the waveforms of the upper and lower reverse surfaces are staggered sequentially to be arrayed uniformly from the inner hole to the periphery or from the outer diameter to the inner hole; and a plurality of waveform movable pressing pretightening butterfly springs can be combined in a folding or overlapping mode.

Description

technical field [0001] The invention relates to a static installation at the connection between a bolt and a fastener or a sealing flange, and has the ability to compensate for elastic force and displacement while remaining static with the contact part, in particular to a wave-shaped live pressure pre-tightened butterfly spring . Background technique [0002] At present, for the gaskets that are statically installed at the joints between the bolts and the fasteners or flanges sealed, there are publicly available complete flat gaskets with rectangular cross-sectional shapes, split gaskets and preloaded butterfly springs. The complete flat washer does not have compensation performance. The split washer only prevents the loosening of the nut through the dislocation of the opening. Although the preloaded butterfly spring has a certain compensation performance, due to the rectangular cross-sectional shape, after the initial flattening of the external pressure, It does not have s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16B43/02F16B39/24
Inventor 赵晶玮
Owner 超化公司
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