CN109372920A - A kind of waveform spring - Google Patents
A kind of waveform spring Download PDFInfo
- Publication number
- CN109372920A CN109372920A CN201811502990.3A CN201811502990A CN109372920A CN 109372920 A CN109372920 A CN 109372920A CN 201811502990 A CN201811502990 A CN 201811502990A CN 109372920 A CN109372920 A CN 109372920A
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- China
- Prior art keywords
- waveform spring
- waveform
- height
- spherical
- welding
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F1/00—Springs
- F16F1/02—Springs made of steel or other material having low internal friction; Wound, torsion, leaf, cup, ring or the like springs, the material of the spring not being relevant
- F16F1/18—Leaf springs
- F16F1/185—Leaf springs characterised by shape or design of individual leaves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/34—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
- F16J15/3436—Pressing means
- F16J15/3452—Pressing means the pressing force resulting from the action of a spring
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Carbon And Carbon Compounds (AREA)
Abstract
The invention discloses a kind of waveform springs, it is characterized in that, thickness t range is 0.1mm~0.5mm, the bulge of its wave crest, trough is height 1mm, the spherical cap shape that spherical radius is 2mm, towards waveform spring height augment direction, working depth H1 is 2.0mm on the convex surface of spherical crown, and circumferential sinusoidal wave number is 6~10, waveform spring and baffle are fixed with the electrode points solid welding of diameter 1mm~1.5mm at several troughs using resistance electric welding or percussion spot welding.
Description
Technical field
Present invention is mainly applied to the segmented circumference graphite grazing of aeroplane engine main bearing chamber, this sealing device is
Using the lubrication leakage of on high-tension side gas barrier low-pressure area into airflow channel, while high pressure gas leakage is to low pressure lubricating oil area
Amount can control the range of very little.In segmented circumference graphite grazing structure, sealing ring is provided with waveform spring axial
Load is to realize initial sealing performance.
Background technique
In the Chinese patent of Patent No. ZL201620173969.3, segmented circumference graphite seal device structure is given
Schematic diagram, as shown in Figure 1.Segmented circumference graphite seal device is the lubricating oil using the gas barrier low-pressure area 11 of high-pressure side 10
It leaks into airflow channel, while the amount in high pressure gas leakage to low pressure lubricating oil area can control the range of very little.Sealing ring 6 weeks
To being divided into 3~6 sections, its banding is fitted in the outer cylinder surface of rotor 7 by an extension spring 9, rotor 7 thermal expansion and
When centrifugation expansion, segmented sealing ring 6 can in static 1 end face radial floating of seal receptacle, therefore the end face of sealing ring have it is micro-
Dynamic abrasion.Waveform spring 4 in segmented circumference graphite seal device will compensate the fretting wear of sealing ring end face, protect
Card end face fits closely always, to guarantee sealing performance.
In above-mentioned patent, the early stage waveform spring and baffle welding structure provided, as shown in Figure 2.By each trough point
After being welded on baffle 3, the elastic force difference before and after statistics discovery spot welding under identical height reaches several times namely wave spring each
The rigidity of trough point postwelding is the several times before weldering.This brings difficulty to the design of circumference graphite seal device, not can guarantee close
The radial trackability of seal ring 6.Namely after 7 circular runout of rotor, sealing ring 6 can be gone out due to the friction of end face and seal receptacle 1
The radial suspension of existing sealing ring 6, so that gap occurs in the outer round surface of the bore area of sealing ring 6 and rotor 7.
And the waveform spring with bulge 18 in above-mentioned patent, as shown in Figure 3, the geometric dimension of non-specific, concrete bulge 18,
Cause waveform spring rigidity also uncontrollable.Actual measurement discovery is by 18 postweldings of bulge of trough, before waveform spring rigidity and spot welding
Difference it is also very big and irregular.For this purpose, the present invention iterates according in the waveform spring process of multiple geometric parameters
Design, processing, elastic force examine as a result, specifying the geometry and size of the waveform spring with good technique effect.
Summary of the invention
The purpose of the present invention: in order to which the waveform spring spot welding front and back solved in aero-engine circumference graphite seal device exists
The difference of working depth down spring, has invented the waveform spring of wave crest and equal one spherical cap structure of band of trough, and this waveform spring exists
At the spherical crown of trough before and after spot welding, stiffness difference is smaller.
Technical solution of the present invention:
A kind of waveform spring, which is characterized in that thickness t range is 0.1mm~0.5mm, and the bulge of wave crest, trough is
Height 1mm, the spherical cap shape that spherical radius is 2mm, the convex surface of spherical crown is towards waveform spring height augment direction, working depth H1
For 2.0mm.
The circumferential sinusoidal wave number is 6~10.
The waveform spring and baffle is welded using resistance or percussion spot welding, at several troughs with diameter 1mm~
The electrode points solid welding of 1.5mm is fixed.
Beneficial effects of the present invention: waveform spring of the invention is because increasing spherical cap shape on the basis of sinusoidal waveform face
Bulge structure, in this way by several bulges and baffle point postwelding, waveform spring spot welding front and back is in mutually level elastic force difference
It is smaller, in engineering in acceptable range.The waveform spring of this structure is simple and efficient in processing technology.Therefore it can show
The design for reducing waveform spring and processing trial-production number are write, the design and processing efficiency of circumference graphite grazing are substantially increased.
Detailed description of the invention
Fig. 1 circumference graphite grazing structural schematic diagram
The welding structure that Fig. 2 early stage waveform spring and baffle use
The waveform spring of Fig. 3 early stage tape drum pack arrangement
Waveform spring geometrical structure parameter Fig. 4 of the invention
The welding structure of waveform spring and baffle Fig. 5 of the invention
Waveform spring structural model Fig. 6 of the invention
Wherein, seal receptacle 1, baffle 3, waveform spring 4, sealing ring 6, rotor 7, extension spring 9, high-pressure side 10, low-pressure area
11, bulge 18.
Specific embodiment
The waveform spring structure of the specific embodiment of the invention is shown in Fig. 4, this waveform spring with a thickness of t, value range exists
0.1mm~0.5mm, the bulge of wave crest, trough be height be 1mm, the spherical crown that spherical radius is 2mm.The convex surface of spherical crown
Towards waveform spring height augment direction.Reached with this and any constraint is not applied to sinusoidal waveform face itself in spot welding, thus
Guarantee waveform spring spot welding before and after sustained height elastic force substantially close to.
The free height of the waveform spring is H0, working depth H1For 2.0mm.This kind of circumferential sinusoidal wave number is 6~10
Waveform spring, at circumferential 3 at the spherical crown of trough with baffle by resistance spot welding after, welding front and back is in height H1When elastic force
Variation is negligible, namely in height H1When=2.0mm, the elastic force before and after spot welding is close.
Fig. 5 is the spot-welded structures signal of the waveform spring embodiment of the present invention that a circumferential sinusoidal wave number is 10 and baffle
Figure, using resistance electric welding or percussion spot welding, trough 18 is fixed with the electrode points solid welding of diameter 1mm~1.5mm at three.
Fig. 6 is waveform spring physical model of the invention.
Claims (3)
1. a kind of waveform spring, which is characterized in that thickness t range is 0.1mm~0.5mm, and the bulge of wave crest, trough is height
Spend 1mm, the spherical cap shape that spherical radius is 2mm, towards waveform spring height augment direction, working depth H1 is on the convex surface of spherical crown
2.0mm。
2. a kind of waveform spring according to claim 1, which is characterized in that the circumferential sinusoidal wave number is 6~10.
3. a kind of waveform spring according to claim 1, which is characterized in that the waveform spring and baffle is welded using resistance
Or percussion spot welding, it is fixed with the electrode points solid welding of diameter 1mm~1.5mm at several troughs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811502990.3A CN109372920A (en) | 2018-12-10 | 2018-12-10 | A kind of waveform spring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811502990.3A CN109372920A (en) | 2018-12-10 | 2018-12-10 | A kind of waveform spring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109372920A true CN109372920A (en) | 2019-02-22 |
Family
ID=65372959
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811502990.3A Pending CN109372920A (en) | 2018-12-10 | 2018-12-10 | A kind of waveform spring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109372920A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110671457A (en) * | 2019-10-06 | 2020-01-10 | 贾有华 | Fence type spring and manufacturing method thereof |
| CN111059185A (en) * | 2019-12-05 | 2020-04-24 | 华中科技大学 | Three-dimensional bionic spring based on 4D printing |
| CN111173873A (en) * | 2020-02-26 | 2020-05-19 | 中国工程物理研究院总体工程研究所 | Spherical net-shaped disc spring |
| CN113369777A (en) * | 2021-06-30 | 2021-09-10 | 中国航发动力股份有限公司 | Clamp for wave spring energy storage spot welding |
| CN113685287A (en) * | 2021-10-26 | 2021-11-23 | 中国航发四川燃气涡轮研究院 | Thermal compensation floating structure for engine binary spray pipe heat shield |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005282807A (en) * | 2004-03-30 | 2005-10-13 | Jatco Ltd | Disc spring |
| US20120104120A1 (en) * | 2009-06-29 | 2012-05-03 | Illinois Tool Works Inc. | Two-phase spring |
| CN204327828U (en) * | 2014-11-05 | 2015-05-13 | 四川达宇特种车辆制造厂 | Be applied to the endurance wavy spring on Micro Turbine Jet Engine high-speed rotating shaft |
| US20150176670A1 (en) * | 2012-07-16 | 2015-06-25 | Thyssenkrupp Presta Ag | Wave spring having a linear characteristic in some regions |
| CN205578038U (en) * | 2016-03-08 | 2016-09-14 | 中国燃气涡轮研究院 | Welded structure of wave spring and baffle |
| CN106734780A (en) * | 2016-12-27 | 2017-05-31 | 中国南方航空工业(集团)有限公司 | Ripple spring molded blank, mould and processing method |
| CN207554663U (en) * | 2017-12-06 | 2018-06-29 | 乐清市力升弹簧有限公司 | A kind of waveform spring |
-
2018
- 2018-12-10 CN CN201811502990.3A patent/CN109372920A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005282807A (en) * | 2004-03-30 | 2005-10-13 | Jatco Ltd | Disc spring |
| US20120104120A1 (en) * | 2009-06-29 | 2012-05-03 | Illinois Tool Works Inc. | Two-phase spring |
| US20150176670A1 (en) * | 2012-07-16 | 2015-06-25 | Thyssenkrupp Presta Ag | Wave spring having a linear characteristic in some regions |
| CN204327828U (en) * | 2014-11-05 | 2015-05-13 | 四川达宇特种车辆制造厂 | Be applied to the endurance wavy spring on Micro Turbine Jet Engine high-speed rotating shaft |
| CN205578038U (en) * | 2016-03-08 | 2016-09-14 | 中国燃气涡轮研究院 | Welded structure of wave spring and baffle |
| CN106734780A (en) * | 2016-12-27 | 2017-05-31 | 中国南方航空工业(集团)有限公司 | Ripple spring molded blank, mould and processing method |
| CN207554663U (en) * | 2017-12-06 | 2018-06-29 | 乐清市力升弹簧有限公司 | A kind of waveform spring |
Non-Patent Citations (1)
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| 张家远等: "航空密封用波形弹簧力学性能理论研究及有限元分析", 《自动化与仪器仪表》 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110671457A (en) * | 2019-10-06 | 2020-01-10 | 贾有华 | Fence type spring and manufacturing method thereof |
| CN111059185A (en) * | 2019-12-05 | 2020-04-24 | 华中科技大学 | Three-dimensional bionic spring based on 4D printing |
| CN111173873A (en) * | 2020-02-26 | 2020-05-19 | 中国工程物理研究院总体工程研究所 | Spherical net-shaped disc spring |
| CN111173873B (en) * | 2020-02-26 | 2024-05-07 | 中国工程物理研究院总体工程研究所 | Spherical net-shaped disc spring |
| CN113369777A (en) * | 2021-06-30 | 2021-09-10 | 中国航发动力股份有限公司 | Clamp for wave spring energy storage spot welding |
| CN113369777B (en) * | 2021-06-30 | 2023-01-31 | 中国航发动力股份有限公司 | Clamp for wave spring energy storage spot welding |
| CN113685287A (en) * | 2021-10-26 | 2021-11-23 | 中国航发四川燃气涡轮研究院 | Thermal compensation floating structure for engine binary spray pipe heat shield |
| CN113685287B (en) * | 2021-10-26 | 2022-02-01 | 中国航发四川燃气涡轮研究院 | Thermal compensation floating structure for engine binary spray pipe heat shield |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190222 |
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| RJ01 | Rejection of invention patent application after publication |