CN109505982A - The compound auxiliary seal ring of mechanical seal - Google Patents
The compound auxiliary seal ring of mechanical seal Download PDFInfo
- Publication number
- CN109505982A CN109505982A CN201811560644.0A CN201811560644A CN109505982A CN 109505982 A CN109505982 A CN 109505982A CN 201811560644 A CN201811560644 A CN 201811560644A CN 109505982 A CN109505982 A CN 109505982A
- Authority
- CN
- China
- Prior art keywords
- ring
- opening slot
- shaped opening
- shaped
- cladding circle
- 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.)
- Withdrawn
Links
- 150000001875 compounds Chemical class 0.000 title claims abstract description 18
- 229920001971 elastomer Polymers 0.000 claims abstract description 50
- 239000005060 rubber Substances 0.000 claims abstract description 50
- 238000005253 cladding Methods 0.000 claims abstract description 30
- 239000000463 material Substances 0.000 claims description 20
- 229920002313 fluoropolymer Polymers 0.000 claims description 15
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 12
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 12
- -1 polytetrafluoroethylene Polymers 0.000 claims description 9
- 229920001084 poly(chloroprene) Polymers 0.000 claims description 4
- 229920002379 silicone rubber Polymers 0.000 claims description 4
- 229920000459 Nitrile rubber Polymers 0.000 claims description 3
- 229920006169 Perfluoroelastomer Polymers 0.000 claims description 3
- 229920002620 polyvinyl fluoride Polymers 0.000 claims description 3
- 238000007789 sealing Methods 0.000 abstract description 28
- 230000000694 effects Effects 0.000 abstract description 6
- 239000002245 particle Substances 0.000 abstract description 5
- 230000006835 compression Effects 0.000 abstract description 3
- 238000007906 compression Methods 0.000 abstract description 3
- 230000003068 static effect Effects 0.000 abstract 1
- 230000007797 corrosion Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- XUCNUKMRBVNAPB-UHFFFAOYSA-N fluoroethene Chemical compound FC=C XUCNUKMRBVNAPB-UHFFFAOYSA-N 0.000 description 4
- 239000003921 oil Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 230000003712 anti-aging effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
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
- 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
- F16J15/3284—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings characterised by their structure; Selection of 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
- 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
- F16J15/3464—Mounting of the seal
-
- 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
- F16J15/3496—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member use of special materials
Abstract
The compound auxiliary seal ring of mechanical seal of the present invention, by cladding circle (1) and O-shaped rubber ring (2) is compound constitutes, the rectangular in cross-section of cladding circle (1), the outer ring surface (10a) that section is provided on cladding circle (1) is cambered surface, inner ring surface (10b) is cambered surface, vertical end face (10c) is the c-shaped opening slot (10) of plane, O-shaped rubber ring (2) is placed in the c-shaped opening slot (10) opened up on cladding circle (1), and the outer ring surface (10a) of the section periphery of O-shaped rubber ring (2) and the c-shaped opening slot (10), inner ring surface (10b), vertical end face (10c) fitting；It can realize the axial seal under radial compression sealing and pressure effect, be suitable for pressure height, the dynamic sealing and static seal occasion of operating condition of the medium containing the complexity such as particle, corrosivity.
Description
Technical field
The present invention relates to the auxiliary seal rings that mechanical seal uses, that is, are used for the rotating ring and rotating seat of mechanical seal
Between, the sealing ring that is used between stationary ring and stationary seat.
Technical background
Between the rotating ring and rotating seat of mechanical seal, auxiliary seal ring is equipped between stationary ring and stationary seat, which is generally
Homogenous material is made.
The auxiliary seal ring that stationary ring uses mainly has O-ring seals, teflin ring, soft graphite circle；
The sliding sealing ring that compensation ring uses mainly has O-ring seals, polytetrafluoroethylene (PTFE) v shaped ring, spring-actuated sealing ring, poly- four
Vinyl fluoride coats O-ring seals.
O-ring seals may not apply to the operating condition containing granule medium in use, and attrition is more serious, and in medium
O-ring seals can be squeezed out to gap direction in the biggish situation of lateral pressure, reciprocal sliding when O-ring seals are applied to compensation ring
Shifting is easy to appear torsion cutting, influences service life；
Teflin ring has processing is rectangular to be applied to stationary ring, and processing forming V-shape is applied to compensation ring, is processed into O shape
For stationary ring and compensation ring.But because its own is high without elasticity, hardness, it is also easy to produce compression set, therefore can only be primary
Property is installed and used；
Spring-actuated sealing ring is mainly used in low temperature situation, itself sealing effect is in use without significant advantage, once it is situated between
Matter content is complicated, and spring corrodes, then seal failure；
The temperature applicable range of flexible graphite sealing ring is wider, excellent corrosion resistance, there is good flexibility, resilience, air-tightness,
But it is not wear-resisting, sliding sealing ring can not be made and used, needed to frequently replace；
Polytetrafluoroethylene (PTFE) coats O-ring seals, is a kind of complete clad type O-ring seals, there is excellent chemical stability and resistance to
Oil, solvent resistant, anti-aging, heat-resisting, cold resistance, gas permeability is low, but poor flexibility, and the coefficient of expansion is big, there is cold flow.
Above-mentioned various sealing rings are influenced by the operating conditions such as media chemistry and pressure, temperature in use, respectively there is feature
With deficiency, defect will affect service life, causes to fail using middle sealing ring, influences the operation of equipment.
Summary of the invention
It is good that the object of the present invention is to provide a kind of sealing effects, the compound auxiliary seal of mechanical seal with long service life
Circle, sufficiently to meet the use of the operating conditions such as various media chemistries and pressure, temperature.
Sealing ring of the present invention, by circular ring shape cladding circle 1 and O-shaped rubber ring 2 is compound constitutes；
The rectangular in cross-section of circular ring shape cladding circle 1, the outer ring surface 10a that section is provided on cladding circle 1 is cambered surface, inner ring surface 10b
For cambered surface, the c-shaped opening slot 10 that vertical end face 10c is plane；
The corresponding c-shaped opening slot 10, the part periphery 1a of cladding circle 1 are the outer ring surface 10a with the c-shaped opening slot 10
Corresponding consistent cambered surface；The part inner headed face 1b of cladding circle 1 is corresponding consistent with the inner ring surface 10b of the c-shaped opening slot 10
Cambered surface；
O-shaped rubber ring 2 is placed in the c-shaped opening slot 10 opened up on cladding circle 1, and the section periphery of O-shaped rubber ring 2 and institute
The outer ring surface 10a for the c-shaped opening slot 10 stated, inner ring surface 10b, vertical end face 10c fitting.
The cladding circle 1 is made of fluoroplastics material；Such as polytetrafluoroethylene (PTFE) (PTFE), perfluoroethylene-propylene (FEP), gather
Vinyl fluoride (PVF).
The O-shaped rubber ring 2 is fluorubber, perfluoroelastomer, silicon rubber, EP rubbers, neoprene, perfluorinated rubber
Glue, nitrile rubber etc. are made.
The configuration of the present invention is simple, it is easily manufactured, it can be achieved that radial compression sealing and the axial seal under pressure effect.It can root
According to applying working condition, according to the characteristic of the sealed medium of contact, select c-shaped opening slot 10 towards installing and using and arbitrarily replace not
The O-shaped rubber ring 2 of same material, it is high to be suitable for pressure, the dynamic sealing of operating condition of the medium containing the complexity such as particle, corrosivity with it is quiet close
It closes and closes.
Compound seal ring of the present invention, when bearing uniaxial pressure effect, i.e., c-shaped opening slot 10 is acted on towards pressure medium
The c-shaped opening slot 10 in direction, cladding circle 1 can be pressurized opening, can push O-shaped rubber ring 2 to c-shaped opening slot 10 under pressure
Vertical end face 10c, fit closely O-shaped rubber ring 2 and the vertical end face 10c of c-shaped opening slot 10, in wrap 1 and O-shaped rubber ring
Under intrinsic decrement effect between 2, O-shaped rubber ring 2 and the outer ring surface 10a and inner ring surface 10b of c-shaped opening slot 10 are closely pasted
Close, there are gap k1, k2 between the vertical end face 10c and outer ring surface 10a and inner ring surface 10b of c-shaped opening slot 10, be O-shaped rubber ring 2 by
Elastic deformation when pressure provides deformation space；Under the action of uniaxial pressure, O-shaped rubber ring can be made to fit closely with cladding circle 1
Sealing surface is formed, to realize the axial seal of radial seal and pressure action direction.
Compound seal ring of the present invention installs and uses state referring to shown in attached drawing 3,4.
Compound seal ring of the present invention is suitable for the compensation ring sealing of mechanical seal and stationary ring sealing uses.
When 10 opening direction of c-shaped opening slot of cladding circle 1 is towards pressure medium action direction, referring to shown in attached drawing 3, it is situated between
Matter pressure pushes O-shaped rubber ring 2 to squeeze to the vertical end face 10c of c-shaped opening slot 10 conducive to the opening of c-shaped opening slot 10, is formed axial
Sealing.
When sealed medium when containing particle, 10 opening direction of c-shaped opening slot that cladding circle 1 may be selected is made backwards to pressure medium
With direction, enter in the c-shaped opening slot 10 of cladding circle 1 referring to particle shown in attached drawing 4, is effectively isolated, avoid sealing ring with it is close
The auxiliary seal ring as caused by particle insertion fails between sealing end face.
Compound seal ring of the present invention uses the wrap 1 and 2 matched combined of O-shaped rubber ring of fluoroplastics material, using C-shaped
Open slot 10 and O-shaped rubber ring 2 cooperate, and 1 wearability of fluoroplastics material wrap is good, and has good self-lubrication, and such as poly- four
Vinyl fluoride is 0.1 to the coefficient of friction of steel, and rubber is 0.9 to the coefficient of friction of steel, so the small heat production of 1 coefficient of friction of wrap
It is low, reduce the operating temperature of the O-shaped rubber ring 2 in wrap 1, service life is extended；
Compound seal ring of the present invention uses the wrap 1 and 2 matched combined of O-shaped rubber ring of fluoroplastics material, using c-shaped opening
Slot 10 and O-shaped rubber ring 2 cooperate, and the wrap 1 and O-shaped rubber ring 2 of fluoroplastics material are reusable, the packet of fluoroplastics material
The drawbacks of sheathing 1 has higher hardness, can avoid the reciprocal torsional shear of O-shaped rubber ring 2 and attrition.
Compound seal ring of the present invention uses the wrap 1 and 2 matched combined of O-shaped rubber ring of fluoroplastics material, using C-shaped
Open slot 10 and O-shaped rubber ring 2 cooperate, and utilize the heat-resisting, cold-resistant of wrap 1 of fluoroplastics material, oil resistant, wear-resisting, chemically-resistant
The characteristics such as dielectric corrosion；The good resilience performance of O-shaped rubber ring 2 is utilized simultaneously, makes up 1 low pressure of the wrap contracting of fluoroplastics material
Be permanently deformed performance；Both maintained the sealing performance of O-shaped rubber ring, at the same be provided with heat-resisting fluoroplastics material, cold-resistant, oil resistant,
The characteristics such as wear-resisting, resistant to chemical media corrosion.
Compound seal ring of the present invention uses the wrap 1 and 2 matched combined of O-shaped rubber ring of fluoroplastics material, using C-shaped
Open slot 10 and O-shaped rubber ring 2 cooperate, and combine the wearability of fluoroplastics material and the tracing ability of O-shaped rubber ring, keep this compound
The tracing ability of type sealing ring is better than the sealing ring that fluoroplastics material is used alone, and service life is better than exclusive use O-shaped rubber ring
Sealing ring, improving sealing performance has remarkable result.
The material of O-shaped rubber ring 2 in wrap 1 of the present invention determines that material, which can be selected, mainly fluorine according to working condition
Rubber, silicon rubber, EP rubbers, neoprene, perfluorinated rubbers.
With mechanical seal high temperature resistant, high pressure resistant, resistant to chemical media corrosion and expensive perfluorinated O-shaped rubber ring is
Example, compound seal ring of the present invention both can guarantee sealing performance, can reduce perfluor again in specific auxiliary seal installation space
The usage amount for changing robber materials, so that cost be greatly lowered.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the embodiment of the present invention.
Fig. 2 is 1 structural schematic diagram of wrap of the present invention.
Fig. 3 is that the present invention installs and uses state diagram.
Fig. 4 is that the present invention installs and uses state diagram.
Specific embodiment
Sealing ring of the present invention, by circular ring shape cladding circle 1 and O-shaped rubber ring 2 is compound constitutes；
The rectangular in cross-section of circular ring shape cladding circle 1, the outer ring surface 10a that section is provided on cladding circle 1 is cambered surface, inner ring surface 10b
For cambered surface, the c-shaped opening slot 10 that vertical end face 10c is plane.
The corresponding c-shaped opening slot 10, the part periphery 1a of cladding circle 1 are the outer ring with the c-shaped opening slot 10
Face 10a corresponds to consistent cambered surface；The part inner headed face 1b of cladding circle 1 is the inner ring surface 10b corresponding one with the c-shaped opening slot 10
The cambered surface of cause.
O-shaped rubber ring 2 is placed in the c-shaped opening slot 10 opened up on cladding circle 1, and the section periphery of O-shaped rubber ring 2
It is bonded with the outer ring surface 10a of the c-shaped opening slot 10, inner ring surface 10b, vertical end face 10c.
The cladding circle 1 is made of fluoroplastics material；Such as polytetrafluoroethylene (PTFE) (PTFE), perfluoroethylene-propylene (FEP), gather
Vinyl fluoride (PVF)；
The O-shaped rubber ring 2 is fluorubber, perfluoroelastomer, silicon rubber, EP rubbers, neoprene, perfluorinated rubbers, fourth
One of nitrile rubber is made.
Claims (1)
1. the compound auxiliary seal ring of mechanical seal, it is characterized in that compound by circular ring shape cladding circle (1) and O-shaped rubber ring (2)
It constitutes；
The rectangular in cross-section of circular ring shape cladding circle (1), the outer ring surface (10a) that section is provided on cladding circle (1) is cambered surface, inner ring
Face (10b) is cambered surface, the c-shaped opening slot (10) that vertical end face (10c) is plane；
The corresponding c-shaped opening slot (10), the periphery (1a) of cladding circle (1) are partially and the c-shaped opening slot (10)
The corresponding consistent cambered surface of outer ring surface (10a)；The inner headed face (1b) of cladding circle (1) is partially interior with the c-shaped opening slot (10)
The corresponding consistent cambered surface of anchor ring (10b)；
O-shaped rubber ring (2) is placed in the c-shaped opening slot (10) opened up on cladding circle (1), and outside the section of O-shaped rubber ring (2)
Disc is bonded with the outer ring surface (10a) of the c-shaped opening slot (10), inner ring surface (10b), vertical end face (10c)；
The cladding circle (1) is made of fluoroplastics material；Such as polytetrafluoroethylene (PTFE), perfluoroethylene-propylene, polyvinyl fluoride；
The O-shaped rubber ring (2) be fluorubber, perfluoroelastomer, silicon rubber, EP rubbers, neoprene, perfluorinated rubbers,
One of nitrile rubber is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811560644.0A CN109505982A (en) | 2018-12-20 | 2018-12-20 | The compound auxiliary seal ring of mechanical seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811560644.0A CN109505982A (en) | 2018-12-20 | 2018-12-20 | The compound auxiliary seal ring of mechanical seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109505982A true CN109505982A (en) | 2019-03-22 |
Family
ID=65753831
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811560644.0A Withdrawn CN109505982A (en) | 2018-12-20 | 2018-12-20 | The compound auxiliary seal ring of mechanical seal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109505982A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4224041A1 (en) * | 2022-02-07 | 2023-08-09 | Siemens Energy Global GmbH & Co. KG | Sliding ring |
-
2018
- 2018-12-20 CN CN201811560644.0A patent/CN109505982A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4224041A1 (en) * | 2022-02-07 | 2023-08-09 | Siemens Energy Global GmbH & Co. KG | Sliding ring |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20190322 |
|
| WW01 | Invention patent application withdrawn after publication |