JP7374573B2 - 摺動部品 - Google Patents
摺動部品 Download PDFInfo
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- JP7374573B2 JP7374573B2 JP2021502065A JP2021502065A JP7374573B2 JP 7374573 B2 JP7374573 B2 JP 7374573B2 JP 2021502065 A JP2021502065 A JP 2021502065A JP 2021502065 A JP2021502065 A JP 2021502065A JP 7374573 B2 JP7374573 B2 JP 7374573B2
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- JP
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- Prior art keywords
- groove
- sliding
- dynamic pressure
- pressure generating
- gas
- 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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- 239000007788 liquid Substances 0.000 claims description 97
- 238000007789 sealing Methods 0.000 description 49
- 239000012530 fluid Substances 0.000 description 22
- 239000000463 material Substances 0.000 description 10
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 8
- 238000010586 diagram Methods 0.000 description 7
- 229910052799 carbon Inorganic materials 0.000 description 6
- 238000005461 lubrication Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000005488 sandblasting Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000007779 soft material Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
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- 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
- F16J15/3404—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member and characterised by parts or details relating to lubrication, cooling or venting of the seal
- F16J15/3408—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member and characterised by parts or details relating to lubrication, cooling or venting of the seal at least one ring having an uneven slipping surface
- F16J15/3424—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member and characterised by parts or details relating to lubrication, cooling or venting of the seal at least one ring having an uneven slipping surface with microcavities
-
- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C17/00—Sliding-contact bearings for exclusively rotary movement
- F16C17/04—Sliding-contact bearings for exclusively rotary movement for axial load only
- F16C17/045—Sliding-contact bearings for exclusively rotary movement for axial load only with grooves in the bearing surface to generate hydrodynamic pressure, e.g. spiral groove thrust bearings
-
- 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
- F16J15/3404—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member and characterised by parts or details relating to lubrication, cooling or venting of the seal
- F16J15/3408—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member and characterised by parts or details relating to lubrication, cooling or venting of the seal at least one ring having an uneven slipping surface
- F16J15/3412—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member and characterised by parts or details relating to lubrication, cooling or venting of the seal at least one ring having an uneven slipping surface with cavities
-
- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
- F16C33/06—Sliding surface mainly made of metal
- F16C33/10—Construction relative to lubrication
- F16C33/1005—Construction relative to lubrication with gas, e.g. air, as lubricant
- F16C33/101—Details of the bearing surface, e.g. means to generate pressure such as lobes or wedges
- F16C33/1015—Pressure generating grooves
-
- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
- F16C33/06—Sliding surface mainly made of metal
- F16C33/10—Construction relative to lubrication
- F16C33/1025—Construction relative to lubrication with liquid, e.g. oil, as lubricant
- F16C33/106—Details of distribution or circulation inside the bearings, e.g. details of the bearing surfaces to affect flow or pressure of the liquid
- F16C33/107—Grooves for generating pressure
-
- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
- F16C33/24—Brasses; Bushes; Linings with different areas of the sliding surface consisting of different materials
-
- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/72—Sealings
- F16C33/74—Sealings of sliding-contact bearings
- F16C33/741—Sealings of sliding-contact bearings by means of a fluid
-
- 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
- F16J15/3404—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member and characterised by parts or details relating to lubrication, cooling or venting of the seal
- F16J15/3408—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member and characterised by parts or details relating to lubrication, cooling or venting of the seal at least one ring having an uneven slipping surface
- F16J15/3412—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member and characterised by parts or details relating to lubrication, cooling or venting of the seal at least one ring having an uneven slipping surface with cavities
- F16J15/3416—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member and characterised by parts or details relating to lubrication, cooling or venting of the seal at least one ring having an uneven slipping surface with cavities with at least one continuous groove
-
- 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
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
- F16J15/3248—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings provided with casings or supports
- F16J15/3252—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings provided with casings or supports with rigid casings or supports
- F16J15/3256—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings provided with casings or supports with rigid casings or supports comprising two casing or support elements, one attached to each surface, e.g. cartridge or cassette seals
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Mechanical Sealing (AREA)
- Sliding-Contact Bearings (AREA)
Description
回転機械の駆動時に相対回転する箇所に配置され、内径または外径の一方側に被密封液体が存在し他方側に気体が存在する環状をなす一対の摺動部品であって、
前記一方の摺動部品の摺動面には、径方向の気体側に連通し前記回転機械の駆動時に前記気体により摺動面間に動圧を生じさせる動圧発生溝が形成されており、前記一方または他の摺動部品の少なくともいずれか一方には周方向に延びる溝が形成されている。
これによれば、回転機械の停止時に一方または他の摺動部材の摺動面に形成された溝に被密封液体が進入することにより、気液界面の表面積が増え、その広い気液界面の表面張力により被密封液体の気体側への更なる進入を抑制できる。そのため、回転機械の始動時に気体により排出する被密封液体の量が少なく摺動面間を短時間で非接触状態に移行させることができる。
これによれば、両方の摺動部品に動圧発生溝及び溝が分散して設けられるので、摺動部品の摺動面の強度が保たれる。
これによれば、溝が動圧発生溝による動圧発生機能を阻害せず、動圧発生溝による動圧を被密封液体側に発生させることができる。また、溝と動圧発生溝とが軸方向に重なる部分を深く確保することができる。
これによれば、溝内に進入した被密封液体の気液界面の表面積が広いものにも対応できる。
これによれば、溝内に進入した被密封液体の気液界面の表面積を確実に且つ大きく確保することができる。
これによれば、被密封液体の気体側への進入を周方向に亘って抑制できる。
これによれば、被密封液体の気体側への進入の抑制する能力が高い。
これによれば、被密封液体の気体側への進入の抑制する能力が高い。また、溝の長さを長くとれるので、溝内に進入した被密封液体により回転機械の始動時の潤滑性が高い。
ΔP=γΔS/ΔV
で導き出される。すなわち、気液界面αの表面積ΔSが増加するほど圧力損失ΔPが増加する。
図12に示されるように、本実施例6における円環溝134は、回転密封環20の摺動面21に形成されている。すなわち、回転密封環20の摺動面21には、動圧発生溝23と円環溝134とが形成されており、動圧発生溝23と円環溝134とは連通している。また、本実施例6では、静止密封環10における摺動面11(ランド12)は平坦面に形成されている。
10 静止密封環
11 摺動面
13 円環溝(溝)
20 回転密封環
21 摺動面
23 動圧発生溝
23a 壁部
131 円環溝(溝)
132 溝
133 円環溝(溝)
134 円環溝(溝)
231 動圧発生溝
Claims (6)
- 回転機械の駆動時に相対回転する箇所に配置され、内径または外径の一方側に被密封液体が存在し他方側に気体が存在する環状をなす一対の摺動部品であって、
前記一方の摺動部品の摺動面には、径方向の気体側に連通し前記回転機械の駆動時に前記気体により摺動面間に動圧を生じさせる動圧発生溝が形成されており、前記一方または他の摺動部品の少なくともいずれか一方には周方向に延びる溝が形成され、
前記溝は、周方向に一周以上延びて、前記動圧発生溝と前記溝とが互いに連通するとともに、前記溝が前記動圧発生溝の終端よりも気体側に配置され、
前記溝の容積は、前記動圧発生溝の容積よりも大きい摺動部品。 - 前記溝は他方の摺動部品の摺動面に形成されている請求項1に記載の摺動部品。
- 前記溝は前記動圧発生溝よりも深く形成されている請求項1または2に記載の摺動部品。
- 前記溝は、該溝における前記被密封液体側の側面と前記他方の摺動部材の摺動面とで成す角度が90度以下の壁部を有している請求項1ないし3のいずれかに記載の摺動部品。
- 前記溝は同心円に複数設けられる円環溝である請求項1ないし4のいずれかに記載の摺動部品。
- 前記溝は渦巻状に設けられている請求項1ないし4のいずれかに記載の摺動部品。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2019029626 | 2019-02-21 | ||
JP2019029626 | 2019-02-21 | ||
PCT/JP2020/006421 WO2020171102A1 (ja) | 2019-02-21 | 2020-02-19 | 摺動部品 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPWO2020171102A1 JPWO2020171102A1 (ja) | 2021-12-16 |
JP7374573B2 true JP7374573B2 (ja) | 2023-11-07 |
Family
ID=72144009
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2021502065A Active JP7374573B2 (ja) | 2019-02-21 | 2020-02-19 | 摺動部品 |
Country Status (6)
Country | Link |
---|---|
US (1) | US12013040B2 (ja) |
EP (2) | EP4317728A3 (ja) |
JP (1) | JP7374573B2 (ja) |
KR (1) | KR102664813B1 (ja) |
CN (1) | CN113454353B (ja) |
WO (1) | WO2020171102A1 (ja) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112088267B (zh) * | 2018-05-17 | 2023-01-24 | 伊格尔工业股份有限公司 | 密封环 |
JP7242659B2 (ja) | 2018-05-17 | 2023-03-20 | イーグル工業株式会社 | シールリング |
WO2024024839A1 (ja) * | 2022-07-29 | 2024-02-01 | イーグル工業株式会社 | 摺動部品 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014103631A1 (ja) | 2012-12-25 | 2014-07-03 | イーグル工業株式会社 | 摺動部品 |
WO2016167262A1 (ja) | 2015-04-15 | 2016-10-20 | イーグル工業株式会社 | 摺動部品 |
WO2017002774A1 (ja) | 2015-06-30 | 2017-01-05 | イーグル工業株式会社 | シール装置 |
JP2017141961A (ja) | 2013-04-24 | 2017-08-17 | イーグル工業株式会社 | 摺動部品 |
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CN113454353A (zh) | 2021-09-28 |
CN113454353B (zh) | 2023-05-02 |
US12013040B2 (en) | 2024-06-18 |
KR102664813B1 (ko) | 2024-05-10 |
EP3929454A1 (en) | 2021-12-29 |
US20220099138A1 (en) | 2022-03-31 |
EP3929454A4 (en) | 2022-11-16 |
EP4317728A3 (en) | 2024-04-10 |
EP4317728A2 (en) | 2024-02-07 |
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