CN102588601B - Mechanical sealing structure with flower and plant simulating fluid type groove end surfaces - Google Patents
Mechanical sealing structure with flower and plant simulating fluid type groove end surfaces Download PDFInfo
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- CN102588601B CN102588601B CN201210034116.8A CN201210034116A CN102588601B CN 102588601 B CN102588601 B CN 102588601B CN 201210034116 A CN201210034116 A CN 201210034116A CN 102588601 B CN102588601 B CN 102588601B
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- type groove
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- plants
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Abstract
The invention discloses a mechanical sealing structure with flower and plant simulating fluid type groove end surfaces. The mechanical sealing structure comprises a mechanical sealing movable ring and a mechanical sealing stationary ring; one sides of the end surfaces of the movable ring and the stationary ring are high-pressure sides, i.e. advanced positions; the other sides of the end surfaces of the movable ring and the stationary ring are low-pressure sides, i.e. backward positions; the backward positions of the end surfaces are provided with circular sealing dams with smooth flat surfaces; the mechanical sealing structure is characterized in that a plurality of fluid type grooves, which are uniformly distributed along the circumference direction, are formed by drainage grooves, left profiled grooves and right profiled grooves centering around the drainage grooves and take the shape of flowers and plants in appearance, are arranged on at least one of the end surfaces of the movable ring and the stationary ring, the drainage grooves are radial grooves; the fluid type grooves are distributed on an annular belt in accordance with the centers of the end surfaces, the circular belt is arranged at the advanced positions of the end surfaces; and no slotting regions between the flower and plant simulating fluid type grooves form a sealing weir. The mechanical sealing structure has better fluid guiding effect; the pressures of the root regions of the fluid type grooves are higher and more uniformly distributed; and the bearing capacity of a seal and the rigidity of a fluid membrane are increased.
Description
Technical field
The present invention relates to a kind of contactless end face seal structure of rotary type fluid machine, in particular to a kind of can the contactless face seals of imitative flowers and plants fluid type groove end surface mechanical sealing structure of bidirectional rotation, be applicable to the shaft end seal device of the rotating machinery rotating shafts such as various compressor, pump and still stirrer.
Background technique
Shaft end seal (as mechanical seal, packing seal, labyrinth sealing etc.) is indispensable basic components in the rotating machineries such as various fluid machinery, dynamic power machine.Current non-contact mechanical seal is with its non-contact, the first-selected shaft end seal having become high parameter rotary type fluid machine without the outstanding features such as wearing and tearing, low energy consumption, anti-high pressure and high stability and advanced feature.Can the existing report of end face seal of bidirectional rotation, as Chinese patent 98103575.2 " bidirectional rotation double-row double-blade spiral groove face sealing ", 01102213.2 " spiral groove end sealer capable of being rotated in both directions ", " 200610049841.7 wear-resistant mechanical sealing structure on end face ", " 200720106746.6 variable distribution porous end face mechanical sealing structure " and 200910154418.7 " a kind of liquid lubricated end face seal structure with cross-scale surface texture characteristic ", US Patent No. 5090712 " Non-contacting, gap-type seal having a ring with a patterned microdamseal face ", US6446976 " Hydrodynamic face seal with grooved sealingdam for zero-leakage ", US7194803 " Seal ring and method of formingmicro-topography ring surfaces ", US7775528 " Bi-directional pattern fordynamic seals " and US20020093141 " Bi-direction rotatable face seal withspiral grooves " etc., except patent 200610049841.7 and US7194803, other China and foreign countries' patents are all on mechanical seal end surface, open micron-sized Hydrodynamic pressure type groove (as T-slot, " king " word groove, double spiral groove etc.) or nibs, therefore, the geometry pattern of dynamic pressure groove and relevant geometrical structure parameter are the core technologies of foregoing invention, guarantee that mechanical seal can be just, counterrotating, realize Entirely contactless between end face and one of key technology obtaining premium properties simultaneously.Although these fluid type groove end face seals have low friction power loss (as T-slot, " king " word groove and micropore) and excellent stability (" king " word groove and double spiral groove), but startability or low speed low pressure seal performance undesirable, bearing capacity and the rigidity of fluid film are also limited to a certain extent.
Summary of the invention
In order to overcome the startability of the sealing that existing bidirectional rotary exists in groove end surface mechanical sealing structure transition or low speed low-pressure performance is undesirable, the bearing capacity of fluid film and the restricted problem of rigidity, the invention provides a kind of imitative flowers and plants fluid type groove end surface mechanical sealing structure.
The technical solution used in the present invention is:
A kind of imitative flowers and plants fluid type groove end surface mechanical sealing structure, comprise rotating ring and the stationary ring of mechanical seal, the side of the end face of described rotating ring and stationary ring is high pressure side and upstream, the opposite side of the end face of described rotating ring and stationary ring is low voltage side and downstream, the downstream of described end face is provided with the ring packing dam of smooth flat, it is characterized in that: at least one end face of described rotating ring or stationary ring be provided with multiple be uniformly distributed circumferentially by drainage trough and the left side centered by drainage trough, the fluid type groove of the similar flowers and plants shape of profile of right type groove composition, described drainage trough is radial groove, described fluid type groove is distributed on an endless belt according to end face center, described endless belt is located at the upstream of end face, non-slotted region between described imitative flowers and plants fluid type groove forms sealing weir.
Further, described fluid type groove is periodic arrangement on seal face.
Further, the width of described endless belt is set to w
h, wherein 0≤w
h< B, B are seal f ace width.
Further, described left and right type groove is arranged symmetrically centered by drainage trough, and described left and right type groove is drawn close in upstream and described drainage trough, separates in downstream and described drainage trough.
Further, the radial dimension of described drainage trough is all less than the radial dimension of left and right type groove.
Further, described left and right type groove outer side wall molded line is smooth molded line or sawtooth molded line.
Further, the type groove that the downstream of described left and right type groove is concentric with end face is connected, the width w of the described type groove concentric with end face
awith degree of depth h
aequal correspondent equal, and w
a=0.5 ~ 2.0mm, h
a=h
g/ 10 ~ h
g/ 5, h
git is the degree of depth of imitative flowers and plants fluid type groove.
Or the downstream of the left and right type groove of described imitative flowers and plants fluid type groove is connected with a nibs separately, the diameter of described nibs or length of side d
dwith degree of depth h
dequal correspondent equal, span is respectively: d
d=0.5 ~ 3.5mm, h
d=h
g/ 10 ~ h
g/ 5, h
git is the degree of depth of imitative flowers and plants fluid type groove.
Further, when the end face seal of described imitative flowers and plants fluid type groove is used for seal fluid medium, described imitative flowers and plants fluid type groove depth h
gspan be: h
g=0.25 ~ 3.5mm, optimum valuing range is: h
g=0.5 ~ 1.8mm, described drainage trough radial length l
pspan be: l
p=l
g/ 6 ~ l
g/ 2, l
git is the radial length value of left and right type groove; During for sealing gas medium, described imitative flowers and plants fluid type groove depth h
gspan be: h
g=3 ~ 20 μm, radial length l
p=l
g/ 3 ~ l
g.
Further, the groove depth of described imitative flowers and plants fluid type groove is the Changing Pattern that upstream is dark, downstream is shallow, and the deep well section of described imitative flowers and plants fluid type groove is 1.1 ~ 3.0 times of shallow slot partial depth.
The shape of drainage trough of the present invention can be the shapes such as spindle, rectangle, triangle, W shape, ellipse; The sidewall molded line of described left and right type groove can be the smooth molded line such as helix, circular arc line, straight line.
Beneficial effect of the present invention is embodied in:
1. the present invention adopts imitative flowers and plants particularly to imitate the flowers and plants profiles such as typical orchid, narcissus and aloe, the imitative flowers and plants fluid type groove formed has better fluid flow guiding effect, the pressure of fluid type groove root area is higher, be more evenly distributed, therefore improve the bearing capacity of sealing and the rigidity of fluid film, enhance the stability of sealing;
2. in the present invention, the downstream of imitative flowers and plants fluid type groove connects with arc groove or annular groove, or be provided with grade nibs, improve the pressure distribution uniformity coefficient imitating flowers and plants fluid type groove root area and neighboring area thereof when sealing runs, the hydrodynamic effect produced is strong, lubricating end surface is effective, further increase fluid film rigidity, enhance the stability of sealing, also improve the startability of sealing simultaneously;
3. in the present invention, the groove depth of fluid type groove is that upstream is dark, the Changing Pattern that downstream is shallow, while fluid pump draws effect enhancing, deep trouth can produce hydrodynamic effect under sealing normal operating conditions, and shallow slot store fluid can prevent low speed lower pressure under or in pump start-up course end face produce dry grinding, further increase the lubrication effect of end face, decrease the issuable wearing and tearing of end face, further increase the dynamic pressure opening feature of sealing, improve overall performance and the abrasion resistance properties of sealing, being specially adapted to can the noncontact seal device of bidirectional rotation,
4. when the seal arrangement made of sealing configuration of the present invention is installed, irrotationality is to requiring, can unidirectional or bidirectional rotation, effectively can control leak-down rate, seal safe and reliable to operation, long service life.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention one.
Fig. 2 is the fluid type groove partial structurtes signal enlarged view of the embodiment of the present invention one.
Fig. 3 is the structural representation of the embodiment of the present invention two.
Fig. 4 a is the change groove depth fluid type groove structural representation of the embodiment of the present invention three.
Fig. 4 b is the change groove depth fluid type groove partial structurtes enlarged view of the embodiment of the present invention three.
Fig. 4 c is the change groove depth fluid type grooved profile figure of the embodiment of the present invention three.
Fig. 5 is the zigzag fashion fluid type groove structural representation of the embodiment of the present invention four.
Fig. 6 is the split-body fluid type groove structure schematic diagram that the drainage trough of the embodiment of the present invention five and left and right type groove depart from.
Embodiment
By reference to the accompanying drawings enforcement of the present invention is described in further detail:
Embodiment one
With reference to Fig. 1-2, a kind of imitative flowers and plants fluid type groove end surface mechanical sealing structure, comprise rotating ring and the stationary ring of mechanical seal, the side of the end face of described rotating ring and stationary ring is high pressure side and upstream, the opposite side of the end face of described rotating ring and stationary ring is low voltage side and downstream, the downstream of described end face is provided with the ring packing dam 3 of smooth flat, feature be at least one end face of described rotating ring or stationary ring be provided with multiple be uniformly distributed circumferentially by drainage trough 22 and the left side centered by drainage trough 22, right type groove 21, the fluid type groove 2 of the similar flowers and plants shape of profile of 23 compositions, described drainage trough 22 is radial groove, described fluid type groove 2 is distributed on an endless belt according to end face 1 center, described endless belt is located at the upstream of end face 1, non-slotted region between described imitative flowers and plants fluid type groove 1 forms sealing weir 4, play current limliting and static seal effect.
Further, described fluid type groove 2 is periodic arrangement on seal face.
Further, the width of described endless belt is set to w
h, wherein 0≤w
h< B, B are seal f ace width.
Further, described left and right type groove 21,23 is arranged symmetrically centered by drainage trough 22, and described left and right type groove 21,23 is drawn close in upstream and described drainage trough 22, separates, play the effect of two-way pumping sealing medium in downstream and described drainage trough 22.
Further, the radial dimension of described drainage trough 22 is all less than the radial dimension of left and right type groove 21,23.
Further, described left and right type groove 21,23 outer side wall molded line is smooth molded line.
Further, when the end face seal of described imitative flowers and plants fluid type groove is used for seal fluid medium, described imitative flowers and plants fluid type groove 2 degree of depth h
gspan be: h
g=0.25 ~ 3.5mm, optimum valuing range is: h
g=0.5 ~ 1.8mm, described drainage trough 22 radial length l
pspan be: l
p=l
g/ 6 ~ l
g/ 2, l
git is the radial length value of left and right type groove 21,23; During for sealing gas medium, described imitative flowers and plants fluid type groove 2 degree of depth h
gspan be: h
g=3 ~ 20 μm, radial length l
p=l
g/ 3 ~ l
g.
The shape of drainage trough 22 described in the present invention can be the shapes such as spindle, rectangle, triangle, W shape, ellipse; The sidewall molded line of described left and right type groove 21,23 can be the smooth molded line such as helix, circular arc line, straight line.
For the operational condition of different rotary formula fluid machinery, by optimizing the geometrical structure parameter of imitative flowers and plants fluid type groove, can meet the usage requirement to sealability under different occasion, being specially adapted to can the contactless face seals of bidirectional rotation.
Embodiment two
With reference to Fig. 3, the present embodiment and the difference of embodiment one are that the downstream of described imitative flowers and plants fluid type groove is connected with its alloytype groove 5 or nibs 6, to improve the pressure distribution uniformity of groove root place end face circumference and near zone thereof, enhance fluid dynamic pressure effect, improve fluid film rigidity, improve starting characteristic and the low speed low pressure operation ability of sealing, improve the antiwear property of end face.
Described type groove 5 can be the molded line groove such as annular groove 51, arc groove 52, and width and the degree of depth of described type groove 5 are respectively w
aand h
a, span is: w
a=0.5 ~ 2.0mm, h
a=h
g/ 10 ~ h
g/ 5, wherein h
git is the degree of depth of imitative flowers and plants fluid type groove; Described nibs 6 is grade regular sections holes, and its sectional shape can be rectangle, square, trapezoidal, V-arrangement, U-shaped, semicircle, ellipse etc., and the diameter of described nibs 6 or the length of side and the degree of depth are respectively d
dand h
d, span is: d
d=0.5 ~ 3.5mm, h
d=h
g/ 10 ~ h
g/ 5.All the other structures are identical with embodiment one with mode of execution.
Embodiment three
With reference to Fig. 4 a-4c, the difference of the present embodiment and embodiment one is that described fluid type groove is rendered as the convergence type ledge structure that upstream is dark, downstream is shallow.Described convergence type fluid type groove can be a step, two steps or multiple step, but be controlled working cost, under the prerequisite meeting certain cost performance, generally with two or three steps as well, the minimum-depth in described convergence type fluid type groove downstream side should be not less than 1.5 μm (dry gas seals) or 0.1mm (hydraulic seal); In addition, require higher occasion in sealing stability and lubricating end surface, also can adopt convergence type sloping platform stage structure, the tilt angle on described sloping platform rank is 2 ~ 10 degree.The imitative flowers and plants fluid type groove end surface mechanical sealing of convergence type ledge structure is adopted to be that rotating speed is lower or start-up course is longer or operate the demand that operating mode is easy to applications such as undergoing mutation in order to meet; effect is drawn to strengthen face type groove pump; improve fluid film rigidity; dry grinding phenomenon is avoided to occur; guarantee safety reliability when machine runs, also play energy-conservation object simultaneously.All the other structures are identical with embodiment one with mode of execution.
Embodiment four
With reference to Fig. 5, the difference of the present embodiment and embodiment one is that the sidewall molded line of the left and right type groove 21,23 of described fluid type groove is flexuose molded line, is the fluid type groove of imitative aloe Deng Cao section plant form structure.The sawtooth sidewall of described left and right type groove 21,23 can be outer side wall is flexuose, also can be madial wall be flexuose, also can be that inside and outside sidewall is flexuose, the basic molded line of toothed edge be typical light slip line equally, comprises the basic molded line such as helix, circular arc line, straight line.General this fluid type groove can three actual uses in conjunction with the embodiments, the corresponding number of steps of the number of teeth.Main application is also identical with embodiment three.All the other structures are identical with embodiment one with mode of execution.
Embodiment five
See Fig. 6, the difference of the present embodiment and embodiment one is that the drainage trough 22 of described fluid type groove is separated with left and right type groove 21,23.All the other structures are identical with embodiment one with mode of execution.
Content described in this specification embodiment is only enumerating the way of realization of inventive concept; protection scope of the present invention should not be regarded as being only limitted to the concrete form that embodiment states, protection scope of the present invention also comprises those skilled in the art and conceives the equivalent technologies means that can expect according to the present invention.
Claims (10)
1. an imitative flowers and plants fluid type groove end surface mechanical sealing structure, comprise rotating ring and the stationary ring of mechanical seal, the side of the end face of described rotating ring and stationary ring is high pressure side and upstream, the opposite side of the end face of described rotating ring and stationary ring is low voltage side and downstream, the downstream of described end face is provided with the ring packing dam of smooth flat, it is characterized in that: at least one end face of described rotating ring or stationary ring be provided with multiple be uniformly distributed circumferentially by drainage trough and the left side centered by drainage trough, the fluid type groove of the similar flowers and plants shape of profile of right type groove composition, described drainage trough is radial groove, described fluid type groove is distributed on an endless belt according to end face center, described endless belt is located at the upstream of end face, non-slotted region between described imitative flowers and plants fluid type groove forms sealing weir.
2. imitative flowers and plants fluid type groove end surface mechanical sealing structure as claimed in claim 1, is characterized in that: described fluid type groove is periodic arrangement on seal face.
3. imitative flowers and plants fluid type groove end surface mechanical sealing structure as claimed in claim 2, is characterized in that: the width of described endless belt is set to w
h, wherein 0≤w
h< B, B are seal f ace width.
4. imitative flowers and plants fluid type groove end surface mechanical sealing structure as claimed in claim 3, it is characterized in that: described left and right type groove is arranged symmetrically centered by drainage trough, described left and right type groove is drawn close in upstream and described drainage trough, separates in downstream and described drainage trough.
5. imitative flowers and plants fluid type groove end surface mechanical sealing structure as claimed in claim 4, is characterized in that: the radial dimension of described drainage trough is all less than the radial dimension of left and right type groove.
6. imitative flowers and plants fluid type groove end surface mechanical sealing structure as claimed in claim 5, is characterized in that: described left and right type groove outer side wall molded line is smooth molded line or sawtooth molded line.
7. imitative flowers and plants fluid type groove end surface mechanical sealing structure as claimed in claim 6, is characterized in that: the type groove that the downstream of described left and right type groove is concentric with end face is connected, the width w of the described type groove concentric with end face
awith degree of depth h
aequal correspondent equal, and w
a=0.5 ~ 2.0mm, h
a=h
g/ 10 ~ h
g/ 5, h
git is the degree of depth of imitative flowers and plants fluid type groove.
8. imitative flowers and plants fluid type groove end surface mechanical sealing structure as claimed in claim 6, is characterized in that: the downstream of the left and right type groove of described imitative flowers and plants fluid type groove is connected with a nibs separately, the diameter of described nibs or length of side d
dwith degree of depth h
dequal correspondent equal, span is respectively: d
d=0.5 ~ 3.5mm, h
d=h
g/ 10 ~ h
g/ 5, h
git is the degree of depth of imitative flowers and plants fluid type groove.
9. the imitative flowers and plants fluid type groove end surface mechanical sealing structure as described in one of claim 6-8, is characterized in that: when the end face seal of described imitative flowers and plants fluid type groove is used for seal fluid medium, described imitative flowers and plants fluid type groove depth h
gspan be: h
g=0.25 ~ 3.5mm, described drainage trough radial length l
pspan be: l
p=l
g/ 6 ~ l
g/ 2, l
git is the radial length value of left and right type groove; During for sealing gas medium, described imitative flowers and plants fluid type groove depth h
gspan be: h
g=3 ~ 20 μm, radial length l
p=l
g/ 3 ~ l
g.
10. imitative flowers and plants fluid type groove end surface mechanical sealing structure as claimed in claim 9, it is characterized in that: the groove depth of described imitative flowers and plants fluid type groove is the Changing Pattern that upstream is dark, downstream is shallow, the deep well section of described imitative flowers and plants fluid type groove is 1.1 ~ 3.0 times of shallow slot partial depth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210034116.8A CN102588601B (en) | 2012-02-15 | 2012-02-15 | Mechanical sealing structure with flower and plant simulating fluid type groove end surfaces |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210034116.8A CN102588601B (en) | 2012-02-15 | 2012-02-15 | Mechanical sealing structure with flower and plant simulating fluid type groove end surfaces |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102588601A CN102588601A (en) | 2012-07-18 |
| CN102588601B true CN102588601B (en) | 2015-04-22 |
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|---|---|---|---|
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104165228B (en) * | 2014-07-25 | 2016-04-13 | 浙江工业大学 | A kind of like sensitive plant nibs bunch end surface mechanical sealing structure |
| CN104728451B (en) * | 2015-04-09 | 2016-09-28 | 江西省科学院应用物理研究所 | The non-contact mechanical seal structure that directivity macropore combines with three dimensional type groove |
| TWI640704B (en) | 2017-06-06 | 2018-11-11 | 祥景精機股份有限公司 | Non-contacting gas seals with inflectional grooves |
| CN107366748B (en) * | 2017-07-24 | 2023-07-21 | 浙江工业大学 | VW mechanical seal end face structure |
| WO2024024839A1 (en) * | 2022-07-29 | 2024-02-01 | イーグル工業株式会社 | Sliding component |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5498007A (en) * | 1994-02-01 | 1996-03-12 | Durametallic Corporation | Double gas barrier seal |
| CN1364987A (en) * | 2001-01-18 | 2002-08-21 | 王玉明 | Spiral groove end sealer capable of being rotated in both directions |
| US6726213B2 (en) * | 2001-01-18 | 2004-04-27 | Yuming Wang | Bi-direction rotatable face seal with spiral grooves |
| CN101793324A (en) * | 2009-08-06 | 2010-08-04 | 浙江工业大学 | Hydrodynamic mechanical seal structure for three-dimensional fish scale-like texture bottom surface type groove |
| CN101893092A (en) * | 2010-06-29 | 2010-11-24 | 杨惠霞 | Bilaterally rotary gas lubrication non-contact mechanical seal device |
| CN201891839U (en) * | 2010-11-22 | 2011-07-06 | 西安永华集团有限公司 | Dry gas sealing friction pair |
| CN101644333B (en) * | 2009-08-20 | 2011-08-31 | 浙江工业大学 | Gas end surface sealing structure with three-dimensional feather-like textured bottom shaped grooves |
| CN202597706U (en) * | 2012-02-15 | 2012-12-12 | 浙江工业大学 | Flower and plant profiled fluid groove end face mechanical sealing structure |
-
2012
- 2012-02-15 CN CN201210034116.8A patent/CN102588601B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5498007A (en) * | 1994-02-01 | 1996-03-12 | Durametallic Corporation | Double gas barrier seal |
| CN1364987A (en) * | 2001-01-18 | 2002-08-21 | 王玉明 | Spiral groove end sealer capable of being rotated in both directions |
| US6726213B2 (en) * | 2001-01-18 | 2004-04-27 | Yuming Wang | Bi-direction rotatable face seal with spiral grooves |
| CN101793324A (en) * | 2009-08-06 | 2010-08-04 | 浙江工业大学 | Hydrodynamic mechanical seal structure for three-dimensional fish scale-like texture bottom surface type groove |
| CN101644333B (en) * | 2009-08-20 | 2011-08-31 | 浙江工业大学 | Gas end surface sealing structure with three-dimensional feather-like textured bottom shaped grooves |
| CN101893092A (en) * | 2010-06-29 | 2010-11-24 | 杨惠霞 | Bilaterally rotary gas lubrication non-contact mechanical seal device |
| CN201891839U (en) * | 2010-11-22 | 2011-07-06 | 西安永华集团有限公司 | Dry gas sealing friction pair |
| CN202597706U (en) * | 2012-02-15 | 2012-12-12 | 浙江工业大学 | Flower and plant profiled fluid groove end face mechanical sealing structure |
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| CN102588601A (en) | 2012-07-18 |
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