CN108591469A - A kind of shaft seal based on liquid activation - Google Patents
A kind of shaft seal based on liquid activation Download PDFInfo
- Publication number
- CN108591469A CN108591469A CN201810608486.5A CN201810608486A CN108591469A CN 108591469 A CN108591469 A CN 108591469A CN 201810608486 A CN201810608486 A CN 201810608486A CN 108591469 A CN108591469 A CN 108591469A
- Authority
- CN
- China
- Prior art keywords
- lip
- foam body
- fluid
- rubber material
- gel rubber
- 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.)
- Pending
Links
- 230000004913 activation Effects 0.000 title claims abstract description 21
- 239000007788 liquid Substances 0.000 title claims abstract description 18
- 239000006260 foam Substances 0.000 claims abstract description 38
- 239000012530 fluid Substances 0.000 claims abstract description 33
- 238000007789 sealing Methods 0.000 claims abstract description 28
- 239000000463 material Substances 0.000 claims abstract description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 19
- 230000004888 barrier function Effects 0.000 claims abstract description 13
- 230000008602 contraction Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 5
- 230000002441 reversible effect Effects 0.000 abstract description 2
- 239000002352 surface water Substances 0.000 abstract description 2
- 230000002028 premature Effects 0.000 description 4
- 238000005452 bending Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 230000007704 transition Effects 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
- F16J15/3204—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip
- F16J15/3232—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip having two or more lips
-
- 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
- F16J15/3204—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip
- F16J15/3208—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip provided with tension elements, e.g. elastic rings
-
- 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
- F16J15/3204—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip
- F16J15/3224—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip capable of accommodating changes in distances or misalignment between the surfaces, e.g. able to compensate for defaults of eccentricity or angular deviations
Abstract
The present invention relates to a kind of shaft seals based on liquid activation, including annular carrier, lip-type seal part and foam body, the foam body is to be expanded there are fluid, is contacted with axis to be pushed into the lip portion of lip-type seal part, with relative to sealing annular carrier；The shaft seal of liquid activation passes through the gel rubber material with reversible effect in the present invention, when encountering fluid, fluid is penetrated by the fluid orifice of the surface water barrier of gel rubber material in gel rubber material, gel rubber material is according to the characteristic for encountering fluid expansion, to push the lip portion engagement shaft of lip-type seal part, relative to sealing annular carrier, to reach sealing effect；Using water barrier setting fluid orifice by the way of, when gel rubber material expands, fluid orifice gradually increases, and realizes the effect of accelerated expansion；The annular retainer using gel rubber material is avoided, in the case where keeping function constant, simplifies structure.
Description
Technical field
The present invention relates to sealing element field more particularly to a kind of sealings based on liquid activation.
Background technology
Many commercial Applications need another region that axis passes through wall to arrive at structure from a region of a structure.Axis is usually worn
The opening in wall is crossed, and is moved relative to the position of wall.For example, axis can be translated around the axis across the axis on surface,
Rotation is moved with some combinations for translating and rotating（For example, distortion, bending or stretching, extension）.Lead between axis and wall opening
It is commonly present spatial joint clearance, to contribute to this movement.
Some are related to fluid isolation between the region spaced apart of the application requirement structure of shifting axle, so that the one of structure
Leakage or pollutant in a region will not be between warp beam and wall opening gap and move on to or flow to the adjacent area of structure.Example
Such as, several bulkheads, these bulkheads are passed through to be spaced apart the different compartments on naval vessel along the cardan shaft that the length of naval vessel hull extends.
It prevents from the water in a compartment from leaking to advance through bulkhead along axis and enter in next compartment, this is for preventing hull from filling
It full water and prevents from flooding naval vessel being very crucial.Shaft seal is for example in axis relative to the axis opening rotation period in ship structure
Between be typically used in limitation fluid stream flow to next compartment from a compartment.
ND type sealing elements include the O shape circles being positioned at rubber moulded parts-axis abutted surface, so that moulded parts and O
Shape circle is turned round as axis turns round.Pressure between the O shape circles both sides caused by the unequal pressure value on two sides of bulkhead
Official post obtains rubber moulded parts and deforms and be pressed against shell, which is located in around opening.When moulded parts is pressed against shell, prevent
The rotation of mold.Stationary moulded parts produces the sealing to shell and O shape circles is forced to be contacted with axis.O shape circles
Also stop revolution, and generate the Fluid Sealing relative to axis.
One disadvantage of ND shape shaft seals is：When seal member is dried, the contact between seal member and axis is led
Seal member has been caused to be lost too early caused by relevant on sealing ring and rubber moulded parts is worn caused by rubbing
Effect.Current shipbuilder specifications usually require that：Before sealing element engages axis, the pressure difference between the apparent surface of seal member is big
About 1/3psig（Pound/square inch, or about 234.1kg/m2）Or water is about 8-9 inches（About 203-229mm）.Water
Presence help to create axis and seal member（For example, moulded parts and O shape circles）Between impermeable water termination.Exist only
0.6-0.9 inches（About 15.2-22.9mm）In the case of water, ND type sealing elements have been activated（For example, engagement shaft）.Sealing
Component engagement shaft when seal member is more dry, results in premature wear.In addition, close when being activated there are small amount water
When sealing component, the pressure difference for being not enough to generate liquid-tight seal is formed between opposite seal member.When not forming liquid-tight seal,
Slip associated with axis and seal member can exceed that shipbuilder specifications.
For example, shipbuilder specifications usually require that self-activating bulkhead sealing, with 0.5 U.S. of maximum leakage rate pint/
Hour（About 0.065ml/s）.Self-activating shaft seal usually and is not required to after being installed relative to axis and during leakage
Want manual operation（For example, the adjustment of sealing element）.For DDG type destroyers, the permitted maximum leakage rate of shipbuilder specifications is 1
U.S.'s pint/minute（About 0.1314ml/s）.Activation of the sealing element in the case where existing compared with low voltage difference（For example, above-mentioned beg for
The early stage activation caused by opposite low water level of opinion）Result in the accelerated wear test of seal member.The accelerated wear test of sealing element is led
The premature failure of sealing element has been caused, and and has not met shipbuilder specifications.
There is the demand for self-activating shaft seal as a result, the self-activation shaft seal is there are small amount fluids
In the case of will not premature activation.Furthermore there is the demand of the shaft seal for being designed to inhibit premature wear.There is also
It can determine the demand of the shaft seal effectively to seal various diameters to scale for its design.For example, in the presence of for be directed to compared with
Small diameter shaft designs and the demand of the shaft seal of larger diameter axis design, both can be based on destroyer or commercial naval vessel and
It is found in various commercial Applications.
Such as Chinese patent 201180043539.X one kind announced and a kind of axis bulkhead sealing system of liquid activation, axis
Bulkhead sealing system includes annular carrier, and annular carrier is fixed relative to bulkhead and around axis, and the axis extends through bulkhead
And annular carrier.A pair of of lip-type seal part of annular carrier support, each lip-type seal part limit the depression and between centers faced out
A part for the lip portion and adjacent carrier that separate.Foam body is arranged in the depression of each lip-type seal part.Each foam
Main body includes gel rubber material, and gel rubber material is configured to expand there are fluid, thus by the lip of lip-type seal part
Divide to be pushed into and be contacted with axis, with relative to sealing annular carrier.Annular retainer is assembled in every side of annular carrier, uses
In foam body is maintained in the depression of each lip-type seal part.
It is formed in depression between the annular retainer and lip-type seal part that are used in above-mentioned patent, gel rubber material and the two
Between do not have relatively-stationary connection, gel rubber material that can be expanded in any direction in depression, pass through the limit of annular retainer
Realize that gel can only realize that the sealing of promotion lip-type seal part, such structure increase annular retaining in the expansion in single direction
Device so that structure is more complicated, in addition annular retainer be easy to cause in the case where seawater is repeatedly penetrated into and is precipitated loosen
Problem.
Invention content
The technical problem to be solved in the present invention is to provide a kind of shaft seals based on liquid activation, can solve general
Fluid seal and the gel rubber material being exposed in fluid prevent the swelling transition position of gel rubber material using the retainer of machinery
The problem of shifting.
In order to solve the above technical problems, the technical scheme is that：A kind of shaft seal based on liquid activation, including
Annular carrier, the annular carrier are fixed relative to bulkhead and around axis, and the axis extends through bulkhead and annular carrier；Institute
State annular carrier include around axis and between centers separate to annular inner portion；Its innovative point is：Including
Lip-type seal part, a pair of of lip-type seal part of annular carrier support, one is provided on every side to annular inner portion
It is a, it limits and appears between lip portion and the adjacent part to annular inner portion that each lip-type seal part is separated between centers
Outside depression；It is provided with U-shaped buckle slot on the depression inner wall of the lip-type seal part；
Foam body, the foam body are arranged in the depression of each lip-type seal part and are provided in foam body and U-shaped
The protrusion of the buckle slot cooperation of type；Foam body realizes foam body in depression by protrusion and the buckle slot cooperation of depression
Positioning is fixed；The foam body includes gel rubber material, and the gel rubber material is configured to expand there are fluid, from
And the lip portion of lip-type seal part is pushed into and is contacted with axis, with relative to sealing annular carrier.
Further, it is provided with a water barrier on the surface of the foam body and water barrier is evenly distributed several streams
Body orifice.
Further, the fluid orifice on the water barrier gradually increases and foam master with the expansion bore of foam body
Body is accelerated expansion state when inhaling fluid；Conversely, the diminution bore of foam body is gradually reduced and when foam body bank fluid is
Deceleration contraction state.
Further, the lip portion of each lip-type seal part includes the distal end being draped down, the distal end portion
Portion is sealed against the axis when gel rubber material expands.
Further, the distal end of each lip portion being draped down it is thin compared with the remainder of lip portion and
It is not hard.
The advantage of the invention is that：
1）The shaft seal of liquid activation passes through the gel rubber material with reversible effect, when encountering fluid, fluid in the present invention
It is penetrated into gel rubber material by the fluid orifice of the surface water barrier of gel rubber material, gel rubber material is according to encountering fluid expansion
Characteristic, to push the lip portion engagement shaft of lip-type seal part, relative to sealing annular carrier, to reach sealing effect；It adopts
The mode of fluid orifice is arranged in water barrier, and when gel rubber material expands, fluid orifice gradually increases, and realizes accelerated expansion
Effect；The annular retainer using gel rubber material is avoided, in the case where keeping function constant, simplifies structure.
Description of the drawings
The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a kind of three-dimensional structure diagram of shaft seal based on liquid activation of the present invention.
Fig. 2 is a kind of cut-away view of shaft seal based on liquid activation of the present invention.
Fig. 3 is a kind of partial enlarged view of shaft seal based on liquid activation of the present invention.
Specific implementation mode
The following examples can make professional and technical personnel that the present invention be more fully understood, but therefore not send out this
It is bright to be limited among the embodiment described range.
A kind of shaft seal based on liquid activation as shown in Figure 1 to Figure 3, including annular carrier 1, the annular carrier
1 fixes relative to bulkhead and around axis, and the axis extends through bulkhead and annular carrier 1；The annular carrier 1 includes surrounding
Axis and between centers separate to annular inner portion 11；Including
Lip-type seal part 2, a pair of of lip-type seal part 2 of annular carrier support, is arranged on every side to annular inner portion 11
There are one, it is limited between lip portion and the adjacent part to annular inner portion that each lip-type seal part 2 is separated between centers
Make the depression 21 faced out；U-shaped buckle slot 22 is provided on the depression inner wall of the lip-type seal part.
Foam body 3, the foam body 3 are arranged in the depression 21 of each lip-type seal part and are arranged in foam body
There is the protrusion coordinated with the buckle slot of U-shaped 22；Foam body 3 realizes foam master by protrusion and the cooperation of buckle slot 22 of depression
Positioning of the body 3 in depression 21 is fixed；The foam body 3 includes gel rubber material, and the gel rubber material is configured to the presence of stream
It expands in the case of body, is contacted with axis to be pushed into the lip portion of lip-type seal part 2, to be carried relative to sealing annular
Body.
It is provided with a water barrier on the surface of foam body 3 and water barrier is evenly distributed several fluid orifices.
Fluid orifice on water barrier gradually increases and when foam body inhales fluid is with the expansion bore of foam body
Accelerated expansion state；Conversely, it is deceleration contraction state that the diminution bore of foam body, which is gradually reduced and when foam body bank fluid,.
The lip portion of each lip-type seal part 2 includes the distal end being draped down, and the distal end is in gel rubber material
The axis is sealed against when expansion.
The distal end of each lip portion being draped down is thin compared with the remainder of lip portion and not hard.
It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, above-described embodiment and explanation
Merely illustrating the principles of the invention described in book, without departing from the spirit and scope of the present invention, the present invention also has
Various changes and modifications, these changes and improvements all fall within the protetion scope of the claimed invention.The claimed scope of the invention
It is defined by the appending claims and its equivalent thereof.
Claims (5)
1. a kind of shaft seal based on liquid activation, including annular carrier, the annular carrier is relative to bulkhead and surrounds
Axis is fixed, and the axis extends through bulkhead and annular carrier；The annular carrier includes separating around axis and between centers inside
Loop section；It is characterized in that：Including
Lip-type seal part, a pair of of lip-type seal part of annular carrier support, one is provided on every side to annular inner portion
It is a, it limits and appears between lip portion and the adjacent part to annular inner portion that each lip-type seal part is separated between centers
Outside depression；It is provided with U-shaped buckle slot on the depression inner wall of the lip-type seal part；
Foam body, the foam body are arranged in the depression of each lip-type seal part and are provided in foam body and U-shaped
The protrusion of the buckle slot cooperation of type；Foam body realizes foam body in depression by protrusion and the buckle slot cooperation of depression
Positioning is fixed；The foam body includes gel rubber material, and the gel rubber material is configured to expand there are fluid, from
And the lip portion of lip-type seal part is pushed into and is contacted with axis, with relative to sealing annular carrier.
2. a kind of shaft seal based on liquid activation according to claim 1, it is characterised in that：The foam body
It is provided with a water barrier on surface and water barrier is evenly distributed several fluid orifices.
3. a kind of shaft seal based on liquid activation according to claim 2, it is characterised in that：On the water barrier
Fluid orifice with the expansion bore of foam body gradually increase and foam body inhale fluid when be accelerated expansion state；Conversely,
It is deceleration contraction state that the diminution bore of foam body, which is gradually reduced and when foam body bank fluid,.
4. a kind of shaft seal based on liquid activation according to claim 1, it is characterised in that：Each lip type is close
The lip portion of sealing includes the distal end being draped down, and the distal end is sealed against described when gel rubber material expands
Axis.
5. a kind of shaft seal based on liquid activation according to claim 1, it is characterised in that：Each lip portion
The distal end being draped down it is thin compared with the remainder of lip portion and not hard.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810608486.5A CN108591469A (en) | 2018-06-13 | 2018-06-13 | A kind of shaft seal based on liquid activation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810608486.5A CN108591469A (en) | 2018-06-13 | 2018-06-13 | A kind of shaft seal based on liquid activation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108591469A true CN108591469A (en) | 2018-09-28 |
Family
ID=63628427
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810608486.5A Pending CN108591469A (en) | 2018-06-13 | 2018-06-13 | A kind of shaft seal based on liquid activation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108591469A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1035386A (en) * | 1987-10-30 | 1989-09-06 | 美国电话电报公司 | Water resistant communications cable |
| CN101099057A (en) * | 2004-11-22 | 2008-01-02 | 米德技术股份有限公司 | Fluid-activated shaft seal |
| CN201184107Y (en) * | 2008-04-18 | 2009-01-21 | 廖昌荣 | Butyl composite foaming rubber strip |
| US20120099984A1 (en) * | 2009-03-16 | 2012-04-26 | Ricardo Abarca Melo | Mechanical Seal |
| CN103097784A (en) * | 2010-07-28 | 2013-05-08 | 米德技术公司 | Fluid activated shaft seal |
| CN103557331A (en) * | 2007-06-19 | 2014-02-05 | 株式会社开滋 | Shaft sealing device, and valve structure using the device |
| CN105194913A (en) * | 2015-09-25 | 2015-12-30 | 山东建筑大学 | Filter column for water treatment pilot scale test |
| CN208431374U (en) * | 2018-06-13 | 2019-01-25 | 南通朴和新材料科技有限公司 | A kind of shaft seal based on liquid activation |
-
2018
- 2018-06-13 CN CN201810608486.5A patent/CN108591469A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1035386A (en) * | 1987-10-30 | 1989-09-06 | 美国电话电报公司 | Water resistant communications cable |
| CN101099057A (en) * | 2004-11-22 | 2008-01-02 | 米德技术股份有限公司 | Fluid-activated shaft seal |
| CN103557331A (en) * | 2007-06-19 | 2014-02-05 | 株式会社开滋 | Shaft sealing device, and valve structure using the device |
| CN201184107Y (en) * | 2008-04-18 | 2009-01-21 | 廖昌荣 | Butyl composite foaming rubber strip |
| US20120099984A1 (en) * | 2009-03-16 | 2012-04-26 | Ricardo Abarca Melo | Mechanical Seal |
| CN103097784A (en) * | 2010-07-28 | 2013-05-08 | 米德技术公司 | Fluid activated shaft seal |
| CN105194913A (en) * | 2015-09-25 | 2015-12-30 | 山东建筑大学 | Filter column for water treatment pilot scale test |
| CN208431374U (en) * | 2018-06-13 | 2019-01-25 | 南通朴和新材料科技有限公司 | A kind of shaft seal based on liquid activation |
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