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CN1401924A - Helical flute and face mechanial seal composed of angular microflute group - Google Patents

Helical flute and face mechanial seal composed of angular microflute group Download PDF

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Publication number
CN1401924A
CN1401924A CN02132978A CN02132978A CN1401924A CN 1401924 A CN1401924 A CN 1401924A CN 02132978 A CN02132978 A CN 02132978A CN 02132978 A CN02132978 A CN 02132978A CN 1401924 A CN1401924 A CN 1401924A
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CN
China
Prior art keywords
spiral
microflute group
angular
spiral chute
microflute
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Granted
Application number
CN02132978A
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Chinese (zh)
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CN100427816C (en
Inventor
徐万福
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Individual
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Individual
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Priority to CNB021329788A priority Critical patent/CN100427816C/en
Publication of CN1401924A publication Critical patent/CN1401924A/en
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Publication of CN100427816C publication Critical patent/CN100427816C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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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
    • F16J15/3412—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
    • 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

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mechanical Sealing (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

A mechanical seal for gas and liquid is composed of sealing ring and ring end face. Said ring end face has the sealing ring dam with the radial width less than that of sealing ring and several spiral slots with 2-30 microns for depth. Said sprial slot is composed of a cluster of parallel angular spiral microslots. Its advantages are obvious dynamic pressure effect and counter-current pump effect.

Description

A kind of spiral chute end surface mechanical sealing by the angular microflute group composition
Technical field:
The present invention relates to spiral chute end surface mechanical sealing technical field in the rotating equipment rotating shaft, exactly it is a kind of spiral chute end surface mechanical sealing by the angular microflute group composition.
Background technique:
The rotating shaft sealing of fluid machinery often adopts soft packing seal (SP), floating-ring seal (F-S), carbocyclic ring sealing (C-S) and mechanical seal (MS).Spiral chute end surface mechanical sealing at the end of last century is as doing in the rotating shaft that operation non-contact gas seal (DGS) promptly is applied in centrifugal gas compressor and pump class under the dangerous flow process medium.The end-face structure of sealing is made up of two-part: one is one group of spiral grooves (Spiral Groove), and it by one group of spiral ridge platform (Spiral Ridge) evenly at interval; The 2nd, the belt sealing dam (SealDam) that links to each other with the groove platform.It produces two mechanics effects when operation; Hydrodynamic effect and counterflow pump draw effect (Up-Stream Pumping).Chinese patent 90101737.x, U. S. Patent 5,201,531 disclose a kind of Hydrodynamic pressure type double spiral groove face seals.It is said that the leakage rate that reaches fluid-encapsulated in theory is zero.Chinese patent 98219179 discloses a kind of name and has been called " spiral groove end sealer " it has big fluid film thickness.Chinese patent 01102213.2 discloses a kind of name and has been called " spiral groove end sealer capable of being rotated in both directions " it has realized the two-way rotation of non-contact sealing.
Summary of the invention:
The purpose of this invention is to provide a kind of spiral chute end surface mechanical sealing by the angular microflute group composition, it can make the dynamic pressure effect of spiral chute end surface mechanical sealing and counterflow pump effect more outstanding.It comprises: seal ring body, ring body end face is characterized in that: it is b that the ring body end face is provided with radial width dRing packing dam and coupled and radially inwardly or/and stretch out and be generally 2～30 μ m, wherein 0≤b along several spiral chute, its degree of depth that circumferentially distribute with certain depth d≤ B:B is the radial width of ring body end face.Spiral chute is made up of gang's dihedral spiral microflute arranged side by side.But the spiral chute that the spiral chute herringbone/herringbone of certain depth or Y shape or triangle complex or four water chestnut stagger modes distribute.The quantity of spiral microflute group is n:0≤n≤∞; The shape angle of microflute group is r:0≤r≤90 °; The generation length of microflute group is l:0≤l≤L g, L gBe spiral fluted length; The envelope of spiral microflute group base angle or drift angle can be straight line, also can be curve.It is b that the ring body end face also can be offered a radial width at the offside on ring packing dam cAnnular reflux trench and communicate with several spiral chutes, its degree of depth equates with the envelope of spiral microflute group.The spiral chute end surface mechanical sealing of angular microflute group composition is suitable for sealing a tangential gas and liquid.
Advantage of the present invention is: make the dynamic pressure effect of spiral chute end surface mechanical sealing and counterflow pump effect more outstanding, strengthened the quality of its non-contact (operation stability) and controllable leak.
Description of drawings:
Fig. 1 is a structural representation of the present invention.
Fig. 2 is the structural representation of dihedral spiral microflute group among the present invention and column distribution.
Fig. 3 is the schematic representation in dihedral spiral microflute group lines enveloping among the present invention and envelope of curve cross section.
Fig. 4 generates the schematic representation of length for dihedral spiral microflute group among the present invention.
Herringbone/herringbone structural representation that Fig. 5 forms for dihedral spiral microflute group among the present invention.
The Y shape structural representation that Fig. 6 forms for dihedral spiral microflute group among the present invention.
The triangle composite structure schematic representation that Fig. 7 forms for dihedral spiral microflute group among the present invention.
The four water chestnut stagger mode structural representations that Fig. 8 forms for dihedral spiral microflute group among the present invention.
Fig. 9 wears the dihedral spiral microflute group structural representation of annular reflux trench for middle-end of the present invention.
The structural representation that Figure 10 equates with spiral microflute group envelope for the annular reflux trench degree of depth among the present invention.
Figure 11 is the schematic representation of each parameter of spiral microflute among the present invention.
1 is that sealing dam, 2 is that spiral chute, 3 is that spiral ridge, 4 is that annular reflux trench, 21 is dihedral spiral microflute among the figure; N is that the quantity of spiral microflute group, the generation length that l is the spiral microflute group, shape angle, a that r is the spiral microflute group are helix angle, h gFor spiral groove depth, Wg/Wr are spiral chute platform circumferential width ratio, (R o-R g)/(R o-R i) be groove dam radial length ratio, (R o-R c)/R o-R i) be groove canal radial length ratio.
Embodiment:
The present invention adopts machinery or processing modes such as laser and chemistry to realize, being provided with radial width on the end face of spiral chute end surface mechanical sealing ring body is b d(0-≤b d=(R g-Ri) or (R o-R g)≤B:B is the radial width of ring body end face) ring packing dam 1 and coupled and radially inwardly (or/and outwards) extend and have the spiral chute 2 (spiral ridge 3 of equivalent at interval) that the degree of depth is generally 2～30 μ m along several that circumferentially distribute, see Fig. 1.It is characterized in that each spiral chute 2 all forms (Fig. 2) by gang's dihedral spiral microflute (Triangular Micro-Groove) 21 arranged side by side: the quantity of spiral microflute group (Fig. 3) is n and 0≤n≤∞; The shape angle (Fig. 3) of spiral microflute group is r and 0≤r≤90 °; The generation length (Fig. 4) of spiral microflute group is l and 0≤l≤L g(L gBe spiral fluted length); And the envelope A at (or top) angle can be straight line, also can be curve (Fig. 3) at the bottom of the spiral microflute group.Dihedral spiral microflute group also can be formed the spiral chute of herringbone/herringbone (Spiral-Herringbonc) or Y shape (Y-Spiral) or triangle complex (Spiral-Plurality of areas) or four water chestnut stagger modes (Intersccting-Spiral areas) distribution, sees Fig. 5,6,7,8 respectively.Also can to offer a radial width at the offside on ring packing dam be b to the ring body end face in addition c(0≤b c=(R c-R o) or (R i-R cThe annular reflux trench of)≤B) (Up-Stream Channel) 4 also communicates (Fig. 9) with several spiral chutes, and its degree of depth equates (Figure 10) with the envelope of spiral microflute group.The helix angle a of spiral chute 2, spiral chute are counted N, spiral groove depth h gCompare W with the 3 groove platform circumferential width that constitute g/ W r, with the 1 groove dam radial length that constitutes than (R o-R g)/(R o-R i) and with the 4 groove canal radial lengths that constitute than (R o-R c)/(R o-R i) wait the various combination of all parameters (Figure 10,11), can satisfy handle various media fluid machinery under various operating modes to the different performance requirement of spiral groove seal.

Claims (6)

1, a kind of spiral chute end surface mechanical sealing by the angular microflute group composition, it comprises: seal ring body, ring body end face is characterized in that: it is b that the ring body end face is provided with radial width dRing packing dam and coupled and radially inwardly or/and stretch out and have the spiral chute of certain depth, wherein 0≤b along several that circumferentially distribute d≤ B:B is the radial width of ring body end face.
2, a kind of spiral chute end surface mechanical sealing by the angular microflute group composition according to claim 1 is characterized in that: spiral chute is made up of gang's dihedral spiral microflute arranged side by side.
3, a kind of spiral chute end surface mechanical sealing by the angular microflute group composition according to claim 1 is characterized in that: but the spiral chute that the spiral chute herringbone/herringbone of certain depth or Y shape or triangle complex or four water chestnut stagger modes distribute.
4, a kind of spiral chute end surface mechanical sealing according to claim 1 by the angular microflute group composition, it is characterized in that: the quantity of spiral microflute group is n:0≤n≤∞; The shape angle of microflute group is r:0≤r≤90 °: the generation length of microflute group is l:0≤l≤L g, L gBe spiral fluted length; The envelope of spiral microflute group base angle or drift angle can be straight line, also can be curve.
5, a kind of spiral chute end surface mechanical sealing by the angular microflute group composition according to claim 1 is characterized in that: it is b that the ring body end face also can be offered a radial width at the offside on ring packing dam cAnnular reflux trench and communicate with several spiral chutes, its degree of depth equates with the envelope of spiral microflute group, wherein 0≤b c≤ B.
6, a kind of spiral chute end surface mechanical sealing by the angular microflute group composition according to claim 1, it is characterized in that: the spiral chute end surface mechanical sealing of angular microflute group composition is suitable for sealing a tangential gas and liquid.
CNB021329788A 2002-09-20 2002-09-20 Helical flute and face mechanial seal composed of angular microflute group Expired - Fee Related CN100427816C (en)

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Application Number Priority Date Filing Date Title
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CN100370166C (en) * 2006-03-13 2008-02-20 浙江工业大学 Wear-resistant mechanical end face seal structure
CN103062411A (en) * 2012-12-24 2013-04-24 浙江工业大学 Microgroove double-layer composite groove deep end surface mechanical seal structure
CN103097782A (en) * 2010-10-06 2013-05-08 伊格尔工业股份有限公司 Sliding part
CN104185756A (en) * 2012-05-21 2014-12-03 伊格尔工业股份有限公司 Sliding component
US20150115540A1 (en) * 2012-09-11 2015-04-30 Eagle Industry Co. Ltd Sliding component
CN104896099A (en) * 2015-05-25 2015-09-09 浙江工业大学 Gas lubrication cluster spiral groove end face mechanical sealing structure
CN104913066A (en) * 2015-06-15 2015-09-16 浙江工业大学 Structure of deep groove gas lubricated end face mechanical seal with compound groove like stacked Arhat
CN104334939B (en) * 2012-08-04 2017-05-31 伊格尔工业股份有限公司 Slide unit
CN106763779A (en) * 2016-12-12 2017-05-31 昆明理工大学 A kind of mechanical seal ring with many zigzag helicla flutes
CN108105391A (en) * 2017-11-22 2018-06-01 成都通密封股份有限公司 A kind of dry gas sealing structure with 3 D stereo one-way spiral slot
CN109237033A (en) * 2017-07-11 2019-01-18 卡尔·弗罗伊登伯格公司 sealing ring
US10612666B2 (en) 2012-09-11 2020-04-07 Eagle Industry Co., Ltd. Sliding component
CN114127430A (en) * 2019-07-26 2022-03-01 伊格尔工业股份有限公司 Sliding component
US11320052B2 (en) 2018-02-01 2022-05-03 Eagle Industry Co., Ltd. Sliding components
US20220145931A1 (en) * 2019-04-09 2022-05-12 Eagle Industry Co., Ltd. Sliding component
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DE102021003139A1 (en) 2021-06-18 2022-12-22 Kaco Gmbh + Co. Kg Sealing ring of a mechanical seal and mechanical seal with such a sealing ring
US11603934B2 (en) 2018-01-12 2023-03-14 Eagle Industry Co., Ltd. Sliding component
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US12104598B2 (en) 2020-07-06 2024-10-01 Eagle Industry Co., Ltd. Eccentric sliding assembly with a plurality of dynamic pressure generation mechanisms
US11933303B2 (en) 2020-07-06 2024-03-19 Eagle Industry Co., Ltd. Sliding component
US11913454B2 (en) 2020-07-06 2024-02-27 Eagle Industry Co., Ltd. Sliding component
US12135030B2 (en) 2020-07-06 2024-11-05 Eagle Industry Co., Ltd. Sliding component
US12247666B2 (en) 2021-03-12 2025-03-11 Eagle Industry Co., Ltd. Sliding component
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