CN107975600A - A kind of self forcing cooling refractory machinery seals device - Google Patents
A kind of self forcing cooling refractory machinery seals device Download PDFInfo
- Publication number
- CN107975600A CN107975600A CN201711184698.7A CN201711184698A CN107975600A CN 107975600 A CN107975600 A CN 107975600A CN 201711184698 A CN201711184698 A CN 201711184698A CN 107975600 A CN107975600 A CN 107975600A
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- Prior art keywords
- ring
- stationary seat
- heat insulation
- insulation loop
- toroidal shell
- Prior art date
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- 238000001816 cooling Methods 0.000 title claims abstract description 32
- 238000009413 insulation Methods 0.000 claims abstract description 31
- 239000007788 liquid Substances 0.000 claims abstract description 25
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 31
- 229910002804 graphite Inorganic materials 0.000 claims description 31
- 239000010439 graphite Substances 0.000 claims description 31
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 238000007789 sealing Methods 0.000 abstract description 24
- 238000009834 vaporization Methods 0.000 abstract description 4
- 230000008016 vaporization Effects 0.000 abstract description 4
- 239000003380 propellant Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 4
- 239000006227 byproduct Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000001704 evaporation Methods 0.000 description 3
- 230000008020 evaporation Effects 0.000 description 3
- 238000009837 dry grinding Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 238000012795 verification Methods 0.000 description 2
- 238000013019 agitation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000000306 component Substances 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 210000005069 ears Anatomy 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000004781 supercooling Methods 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/26—Sealings between relatively-moving surfaces with stuffing-boxes for rigid sealing rings
- F16J15/30—Sealings between relatively-moving surfaces with stuffing-boxes for rigid sealing rings with sealing rings made of carbon
-
- 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
- F16J15/162—Special parts or details relating to lubrication or cooling of the sealing itself
-
- 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
- F16J15/18—Sealings between relatively-moving surfaces with stuffing-boxes for elastic or plastic packings
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mechanical Sealing (AREA)
Abstract
The present invention relates to a kind of self forcing cooling refractory machinery seals device, rotating ring, stationary seat and the heat insulation loop of the sealing device are sleeved in shaft；Diversion trench is set on rotating ring；Toroidal shell is sleeved in heat insulation loop and stationary seat, and toroidal shell side and heat insulation loop fixing seal, the opposite side inner wall of toroidal shell and the outer round surface of stationary seat form a liquid medium annular entry, ring film group is sleeved in heat insulation loop and has gap with the external annulus of heat insulation loop, and the both sides outer edge of ring film group carries out full weld in a circumferential direction with stationary seat, heat insulation loop respectively；So as to form a cavity between toroidal shell, ring film group；The aperture connected with cavity is provided with the outer wall of toroidal shell；One liquid medium annular entry, cavity and keyhole formation cooling duct.By diversion trench and cooling duct there is provided liquid medium that vaporization occurs, cause mechanical seal occur unstable operation, sealing face leakage even seal failure the problems such as.
Description
Technical field
The present invention relates to technical field of sealing technology, and in particular to a kind of self forcing cooling refractory machinery seals device.
Background technology
Turbine pump component is the core component of liquid-propellant rocket engine propellant feed system in the prior art, main to realize
Propellant is conveyed to combustion chamber to carrying out flow medium supercharging, and by design requirement flow and pressure, usually in liquid-propellant rocket engine
A set of mechanically-sealing apparatus is set in the shaft between pump intake and turbine in turbine pump, in order to realize that propellant is situated between
Matter is micro or without in propellant leakage to turbine chamber.
During existing mechanically-sealing apparatus work, maximum PV values will so be asked close to 60MPa.m/s there are following
Topic：
1st, there is phenomena such as dry grinding, hot tearing, deformation in mechanical sealing friction pairs end face temperature rapid increase, the pair that rubs.
2nd, turbine chamber temperature is up to 650~800 DEG C, and existing mechanically-sealing apparatus does not have auxiliary cooling function to rely on
Self-ability radiates, and vaporization occurs in the secondary peripheral liquid medium that rubs, and causes mechanical seal unstable operation, sealing occur
The problems such as face leakage or even seal failure.
The content of the invention
In order to solve the problems, such as in background technology, the present invention provides a kind of good seal performance and structure in high temperature environments
Simple self forcing cooling refractory machinery seals device.
The technical scheme is that：
The present invention provides a kind of self forcing cooling refractory machinery seals device, including O-shaped rubber ring, rotating ring, graphite annulus,
Stationary seat, ring film group, toroidal shell and heat insulation loop；
Rotating ring is fixedly set in shaft and installs O between the internal ring wall and shaft outer surface of one end of pump intake and rotating ring
Type rubber ring, stationary seat are sleeved on the one end of shaft away from pump intake；Graphite annulus, graphite annulus are provided between rotating ring and stationary seat
One end face is contacted with rotating ring, another end face and the stationary seat clearance fit of graphite annulus；
Heat insulation loop is sleeved on the one end of shaft away from pump intake and positioned at the rear of stationary seat；Toroidal shell is sleeved on heat-insulated
On ring and stationary seat, and toroidal shell side and heat insulation loop fixing seal, the opposite side inner wall of toroidal shell and stationary seat
Outer round surface forms a liquid medium annular entry, and ring film group is sleeved in heat insulation loop and has with the external annulus of heat insulation loop
There is gap, the both sides outer edge of ring film group carries out full weld in a circumferential direction with stationary seat, heat insulation loop respectively；So as to annular
A cavity is formed between housing, ring film group；Along the circumferential direction it is evenly arranged with the outer wall of the toroidal shell and chamber
At least two apertures of body connection；One the liquid medium annular entry, the cavity and keyhole formation cooling duct.
Further, in order to make around anti-locating snap ring liquid medium because of high-temperature evaporation, the outer round surface of the rotating ring is along circle
Circumferential direction is provided with plurality of guiding gutter.
Further, the angle between diversion trench and liquid medium flow direction is α °, 25 ° of 45 ° of ＜ α ° ＜.
Further, in order to effectively eliminate influence of the shafting fluctuation to ring seal performance, floatability is good, while in order to true
The heat-sinking capability for protecting machinery rotating ring diversion trench when shaft is rotated both clockwise and counterclockwise is identical, it is necessary to be dismounted to rotating ring, institute
It is split structure to state rotating ring, including ring body and bushing；The bushing includes circular rings and is arranged on circular rings end face
Annular protrusion, the ring body is sleeved on annular protrusion；O-shaped rubber ring is also equipped between ring body and annular protrusion；
Clearance fit between the end face of ring body and the end face of the circular rings；The diversion trench is set on the outer round surface of ring body.
Further, in order to make not relatively rotate between ring body and circular rings, the ring body and the circular interannular
The end face that gap coordinates is provided with the first anti-rotation groove, and the first anti-rotation being adapted with the first anti-rotation groove is provided with the circular rings
Ear.
Further, in order to make not relatively rotate between stationary seat and toroidal shell, the stationary seat outer round surface is set
There is the second anti-transfer ear；The toroidal shell inner wall is provided with the second anti-rotation groove being adapted with the second anti-transfer ear.
Further, the ring film group is welded successively from left to right by N number of ring segment along the axial direction of shaft；
Its specific welding manner is：Outer edge welds on the left of the endoporus of outer edge and the second ring segment on the right side of the endoporus of first ring segment
Connect, outer edge welds on the left of the outer round surface of outer edge and the 3rd ring segment on the right side of the outer round surface of the second ring segment, according to this
Rule is until welded N number of ring segment；N≥10.
Further, the section undulate of ring segment.
Further, the end face that the stationary seat is contacted with graphite annulus is equipped with annular convex platform, the annular convex platform it is interior
The outer round surface of surface and graphite annulus fits closely；Stress release annular groove is provided with the inner surface of the annular convex platform.
Further, gap≤0.03mm between the end face of graphite annulus and stationary seat, ring film group and heat insulation loop
Gap between external annulus is≤5mm；Water conservancy diversion groove deep is 0.5~1.5mm, and diversion trench groove width is 3~5mm.
The beneficial effects of the invention are as follows：
1st, mechanical seal structure of the invention is used is set in secondary (friction pair is made of the rotating ring, graphite annulus) rear end of friction
Cooling duct so that the high temperature of friction by-product life, can carry out heat exchange by liquid medium, occur so as to avoid friction is secondary
Phenomena such as dry grinding, hot tearing, deformation, while vaporization occurs in the secondary peripheral liquid medium that it also avoid rubbing, and causes mechanical seal to go out
The problems such as existing unstable operation, sealing face leakage or even seal failure.
2nd, the cylindrical side of rotating ring of the present invention is provided with multiple diversion trenches, and helicla flute is rotated with shaft during work, can accelerate machine
Velocity of medium near tool sealing friction pair, liquid medium is because of high-temperature evaporation around the pair that further prevents from rubbing.
3rd, rotating ring of the present invention uses split structure, is provided with O-shaped rubber ring between the ring body and bushing of rotating ring, the knot
The shafting that structure effectively eliminates fluctuates the influence to ring seal performance, and floatability is good, while Split type structure enhances mechanical seal work
The heat-sinking capability of rotating ring during work, and due to when shaft is rotated counterclockwise and rotated clockwise, the outer surface water conservancy diversion of rotating ring
Groove needs to meet different direction of rotation, easy to be changed to rotating ring.
4th, the present invention uses multiple sections to be used to be stationary seat, graphite for the ring film group that corrugated ring segment forms
Axial compressive force is provided between ring and rotating ring and make it that sealing effect is more preferable, while the both sides of ring film group and stationary seat, heat insulation loop
Sealing is fixed by the way of full weld so that will not be revealed when liquid medium passes through cooling duct.
5th, stationary seat of the present invention is provided with stress release annular groove, can effectively eliminate stationary seat and store, assemble, using
Influence of the stress release to graphite annulus in journey, mitigates the deflection of graphite annulus, improves the functional reliability of mechanical seal.
6th, heat insulation loop of the present invention can effectively stop influence of the turbine high-temperature fuel gas to mechanical seal, improve mechanical seal
Working environment, reduce the trend being plastically deformed under bellows hot environment, improve the functional reliability of sealing.
7th, the position that intermediate gap of the present invention coordinates employs rational size so that (maximum PV values when mechanical seal works
Close to 60MPa.m/s), sealing performance is stablized, and friction is secondary uniform to mill region, smooth, and lubricating film is continuous between friction is secondary.
Brief description of the drawings
Fig. 1 is the overall structure diagram of mechanically-sealing apparatus of the present invention；
Fig. 2 is the assembling schematic diagram of split type rotating ring；
Fig. 3 is ring body front view；
Fig. 4 is the A direction views of Fig. 3 when shaft rotates counterclockwise；
Fig. 5 is the A direction views of Fig. 3 when shaft rotates clockwise；
Fig. 6 is stationary seat structure diagram；
Fig. 7 is the rotating ring end face temperature simulated effect figure of existing machinery sealing device；
Fig. 8 is the rotating ring end face temperature simulated effect figure of mechanically-sealing apparatus of the present invention；
Fig. 9 is the rotating ring end face temperature and rotating ring end face temperature comparison of test results of the present invention song of existing machinery sealing device
Line chart.
Brief description of the drawings
1-O types rubber ring, 2- shafts, 3- ring films group, 4- rotating rings, 5- graphite annulus, 6- stationary seats, 7- ring segments, 8-
Cavity, 9- toroidal shells, 10- heat insulation loops, 11- diversion trenches, 12- apertures, 17- bushings, 18- ring bodies, 181- circular rings, 182-
Annular protrusion, 19- annular convex platform, 20- stress releases annular groove, the first anti-rotation grooves of 21-, the first anti-transfer ears of 22-, 23- second are anti-
Transfer ear, the second anti-rotation grooves of 24-, 25- liquid medium annular entries.
Embodiment
Present disclosure is described in further detail below in conjunction with the drawings and specific embodiments：
Self forcing cooling refractory machinery seals device provided by the invention, is mainly arranged at liquid-propellant rocket engine turbine
Pump between pump intake and turbine, it is therefore an objective to realize and seal self forcing cooling high temperature resistant, improve the reliability of seal operation.The present invention
The field such as ship, nuclear industry sealing device is can also be used for, and other must assure that sealing, dimensional space are narrow and small, requirement is multiple
In start-stop, the rotating device of long-life.
As shown in Fig. 1~Fig. 6, self forcing cooling refractory machinery seals device provided by the invention, mainly comprising O-shaped rubber
Cushion rubber 1, rotating ring 4, graphite annulus 5, stationary seat 6, ring film group 3, toroidal shell 9, heat insulation loop 10.
Rotating ring 4 is fixedly set in shaft 2 between 2 outer surface of internal ring wall and shaft of one end of pump intake and rotating ring 4
Mounting O-shaped rubber ring 1, stationary seat 6 are sleeved on the one end of shaft away from pump intake；Graphite is provided between rotating ring 4 and stationary seat 6
Ring 5,5 one end faces of graphite annulus are contacted with rotating ring 4, another end face and the 6 clearance fit (gap herein of stationary seat of graphite annulus 5
≤0.03mm)；
Heat insulation loop 10 is sleeved on the one end of shaft 2 away from pump intake and positioned at the rear of stationary seat 6；Toroidal shell 9 is set with
In heat insulation loop 10 and stationary seat 6, and 9 side of toroidal shell and 10 fixing seal of heat insulation loop, in the opposite side of toroidal shell 9
The outer round surface of wall and stationary seat 6 forms a liquid medium annular entry 25, ring film group 3 be sleeved in heat insulation loop 10 and
There is gap with the external annulus of heat insulation loop 10, the both sides outer edge of ring film group 3 is respectively with stationary seat 6, heat insulation loop 10 in circle
Full weld is carried out in circumferential direction；So as to form a cavity 8 between toroidal shell 9, ring film group 3；On the outer wall of toroidal shell 9
Along the circumferential direction it is evenly arranged with least two apertures, 12 (the peripherally disposed 4-6 under normal conditions connected with cavity 8
It is a)；The liquid medium annular entry 25, the cavity 8 and aperture 12 form a cooling duct, which can
The heat for the by-product life that rubs is taken away by the form of heat exchange, so as to play the role of cooling.
In order to make around anti-locating snap ring, because of high-temperature evaporation, the outer round surface of rotating ring 4 is peripherally disposed to be had liquid medium
Plurality of guiding gutter 11.Angle between diversion trench and liquid medium flow direction is α °, 25 ° of 45 ° of ＜ α ° ＜, and water conservancy diversion groove deep is 0.5
~1.5mm, diversion trench groove width are 3~5mm.
Thus another split type structure of rotating ring is just derived, as shown in Figure 2：
Rotating ring 4 is split structure, including ring body 17 and bushing 18；Bushing 18 includes circular rings 181 and sets
Annular protrusion 182 in 181 end face of circular rings, ring body 17 are sleeved on annular protrusion 182；Ring body 17 and annular protrusion
O-shaped rubber ring 1 is also equipped between 182；Clearance fit (this between the end face of ring body 17 and the end face of the circular rings 181
The gap at place is 0.2~0.5mm).During using split structure, diversion trench is arranged in ring body.In addition, which sets
The shafting that meter can also effectively eliminate fluctuates the influence to ring seal performance, and floatability is good, while also enhances mechanical seal work
The heat-sinking capability of rotating ring during work.
The specific set-up mode of diversion trench 11 is that the purpose determined by the direction of rotation of shaft 2 is fluid outside the rotating ring made
No matter good circulation is respectively provided with when shaft rotates clockwise or rotates counterclockwise, in actual work, when shaft is suitable
When hour hands rotate, the set-up mode of diversion trench is (diversion trench is arranged in ring body) as shown in Figure 4, when shaft rotates counterclockwise
When, the set-up mode of diversion trench as shown in Figure 5 (diversion trench is arranged in ring body), therefore, revolves to adapt to the different of shaft
Turn direction, it is necessary to be replaced according to actual conditions to rotating ring.
In order to persistently provide axial compressive force to rotating ring 4, graphite annulus 5 and stationary seat 6, while ensure so that liquid medium leads to
It will not be revealed during supercooling passage, ring film group of the invention has been designed to a kind of structure similar to seal bellows：Its
Concrete structure is：Ring film group 3 is welded successively from left to right by N number of ring segment 7 along the axial direction of shaft 2；Its is specific
Welding manner be：Outer edge welds on the left of the endoporus of outer edge and the second ring segment on the right side of the endoporus of first ring segment, the
Outer edge welds on the left of the outer round surface of outer edge and the 3rd ring segment on the right side of the outer round surface of second ring piece, straight according to this rule
To having welded N number of ring segment；N≥10；In order to ensure the rigidity and amount of deflection of ring film group, the section of each ring segment is in ripple
Shape wave.
In order to effectively eliminate influence of stress release of the stationary seat during storage, assembling, use to graphite annulus, this is close
Seal apparatus is also made that optimization design：The end face that stationary seat 6 is contacted with graphite annulus 5 is equipped with annular convex platform 19, the ring
The inner surface of shape boss 19 and the outer round surface of graphite annulus 5 fit closely；Stress is provided with the inner surface of annular convex platform 19 to release
Put annular groove 20.
When whole sealing device is rotated in shaft, ensure motion state between each part, the mechanically-sealing apparatus
Anti-rotation design is employed between multiple parts, is specifically：Ring body 17 and the end face of 181 clearance fit of circular rings are set
There is the first anti-rotation groove 21, the first anti-transfer ear 22 being adapted with the first anti-rotation groove 21, and stationary seat are provided with circular rings 181
6 outer round surface are provided with the second anti-transfer ear 23；9 inner wall of toroidal shell is provided with second be adapted with the second anti-transfer ear 23
Anti-rotation groove 24.
It should be noted is that：Hardness HRC >=35 of rotating ring, graphite annulus are pure carbon graphite, and ring segment can use
1Cr18Ni9Ti, GH4169 material are made, the materials of other metal parts is generally 9Cr18, O-shaped rubber ring be generally F207,
S8104。
During work, shaft 2 drives rotating ring 4 to rotate at a high speed, and stationary seat 6 drives 5 opposed annular housing 9 of graphite annulus static, ring
Shape diaphragm group 3 provides axial pressing force, rotating ring 4 and graphite annulus 5 is remained that end face is bonded, realizes sealing function, move at the same time
The diversion trench 11 of ring surface makes the circulation of surrounding liquid medium more smooth, and the liquid medium between pump intake and turbine is from ring
Liquid medium annular entry 25 between shape housing 9 and stationary seat is flowed into cavity 8, then is flowed from the aperture 12 on toroidal shell 9
Go out, so that the high temperature of leading portion friction by-product life be cooled down by way of liquid heat-exchange.
Simulation result：Fig. 7 is is not provided with diversion trench and rotating ring end face temperature in existing sealing device during without cooling duct
Degree distribution, Fig. 8 is the end face temperature distribution of rotating ring in present invention when setting diversion trench and having cooling duct, on identical border
Under condition and operating mode, structure design using the present invention, rub secondary surrounding medium agitation enhancing, and the secondary temperature gradient that rubs is gentle,
Be conducive to prevent from rubbing secondary thermal deformation the problems such as, temperature reduces 7~9 DEG C, the secondary surrounding medium vaporization of the friction substantially reduced
Probability.
Result of the test：Verification experimental verification is carried out to different structure, Fig. 9 is shown in the distribution of rotating ring end face temperature, in identical perimeter strip
Under part and operating mode, after diversion trench and cooling channel structure, the secondary same position temperature ratio that rubs is not provided with diversion trench and cooling
The rotating ring end face temperature of passage is 10 DEG C low, and close with simulation result, test effect is good.
Claims (10)
1. a kind of self forcing cooling refractory machinery seals device, including O-shaped rubber ring, rotating ring, graphite annulus, stationary seat, annular
Diaphragm group, toroidal shell and heat insulation loop；
Rotating ring is fixedly set in shaft mounting O-shaped rubber between the internal ring wall and shaft outer surface of one end of pump intake and rotating ring
Cushion rubber, stationary seat are sleeved on the one end of shaft away from pump intake；Graphite annulus, graphite annulus one are provided between rotating ring and stationary seat
End face is contacted with rotating ring, another end face and the stationary seat clearance fit of graphite annulus；
Heat insulation loop is sleeved on the one end of shaft away from pump intake and positioned at the rear of stationary seat；Toroidal shell be sleeved on heat insulation loop and
On stationary seat, and toroidal shell side and heat insulation loop fixing seal, the opposite side inner wall of toroidal shell and stationary seat it is cylindrical
Surface forms a liquid medium annular entry, between ring film group is sleeved in heat insulation loop and has with the external annulus of heat insulation loop
Gap, the both sides outer edge of ring film group carries out full weld in a circumferential direction with stationary seat, heat insulation loop respectively, so that circular casing
A cavity is formed between body, ring film group；Along the circumferential direction it is evenly arranged with the outer wall of the toroidal shell and cavity
At least two apertures of connection；One the liquid medium annular entry, the cavity and keyhole formation cooling duct.
2. self forcing cooling refractory machinery seals device according to claim 1, it is characterised in that：Outside the rotating ring
Circular surfaces are peripherally disposed plurality of guiding gutter.
3. self forcing cooling refractory machinery seals device according to claim 2, it is characterised in that：The diversion trench with
Angle between liquid medium flow direction is α °, 25 ° of 45 ° of ＜ α ° ＜.
4. self forcing cooling refractory machinery seals device according to claim 3, it is characterised in that：The rotating ring is point
Body formula structure, including ring body and bushing；The bushing includes circular rings and the annular protrusion for being arranged on circular rings end face,
The ring body is sleeved on annular protrusion；O-shaped rubber ring is also equipped between ring body and annular protrusion；The end face of ring body
The clearance fit between the end face of the circular rings；The diversion trench is set on the outer round surface of ring body.
5. self forcing cooling refractory machinery seals device according to claim 4, it is characterised in that：The ring body with
The end face of the circular rings clearance fit is provided with the first anti-rotation groove, is provided with the circular rings and is adapted with the first anti-rotation groove
The first anti-transfer ear.
6. self forcing cooling refractory machinery seals device according to claim 5, it is characterised in that：Outside the stationary seat
Circular surfaces are provided with the second anti-transfer ear；The toroidal shell inner wall is provided with the second anti-rotation groove being adapted with the second anti-transfer ear.
7. the self forcing cooling refractory machinery seals device according to claim 1-6 any claims, its feature exist
In：The ring film group is welded successively from left to right by N number of ring segment along the axial direction of shaft；Its specific welding side
Formula is：Outer edge welds on the left of the endoporus of outer edge and the second ring segment on the right side of the endoporus of first ring segment, the second ring segment
Outer round surface on the right side of outer edge and the 3rd ring segment outer round surface on the left of outer edge weld, according to this rule up to having welded
N number of ring segment；N≥10.
8. self forcing cooling refractory machinery seals device according to claim 7, it is characterised in that：The section of ring segment
Undulate.
9. the self forcing cooling refractory machinery seals device according to claim 1-6 any claims, its feature exist
In：The end face that the stationary seat is contacted with graphite annulus is equipped with annular convex platform, the inner surface of the annular convex platform and graphite annulus
Outer round surface fits closely；Stress release annular groove is provided with the inner surface of the annular convex platform.
10. self forcing cooling refractory machinery seals device according to claim 7, it is characterised in that：The end of graphite annulus
Gap≤0.03mm between face and stationary seat, the gap between ring film group and the external annulus of heat insulation loop are≤5mm；Water conservancy diversion
Groove deep is 0.5~1.5mm, and diversion trench groove width is 3~5mm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711184698.7A CN107975600A (en) | 2017-11-23 | 2017-11-23 | A kind of self forcing cooling refractory machinery seals device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711184698.7A CN107975600A (en) | 2017-11-23 | 2017-11-23 | A kind of self forcing cooling refractory machinery seals device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109779947A (en) * | 2019-03-01 | 2019-05-21 | 北京星际荣耀空间科技有限公司 | A kind of dynamic sealing device reused suitable for low-temperature and high-speed |
| CN110030381A (en) * | 2019-03-12 | 2019-07-19 | 北京星际荣耀空间科技有限公司 | One kind being suitable for high speed and high pressure dynamic sealing device and aircraft |
| CN112012954A (en) * | 2020-09-08 | 2020-12-01 | 北京星际荣耀空间科技有限公司 | Turbo pump sealing mechanism and turbo pump |
| CN112728087A (en) * | 2021-01-07 | 2021-04-30 | 湖北航天技术研究院总体设计所 | Shaft seal device for liquid rocket engine |
| CN113236781A (en) * | 2021-04-15 | 2021-08-10 | 大连理工大学 | Sealing ring with antifriction and heat dissipation structure on end face and machining method thereof |
| US20210348563A1 (en) * | 2020-05-05 | 2021-11-11 | Raytheon Technologies Corporation | Shrouded aircraft engine seal carrier |
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| CN1364987A (en) * | 2001-01-18 | 2002-08-21 | 王玉明 | Spiral groove end sealer capable of being rotated in both directions |
| CN101201109A (en) * | 2006-12-12 | 2008-06-18 | 郑州华能电力设备有限公司 | Mechanical sealing device capable of changing specific pressure |
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| CN109779947A (en) * | 2019-03-01 | 2019-05-21 | 北京星际荣耀空间科技有限公司 | A kind of dynamic sealing device reused suitable for low-temperature and high-speed |
| CN109779947B (en) * | 2019-03-01 | 2024-05-24 | 北京星际荣耀空间科技有限公司 | Dynamic sealing device suitable for low-temperature high-speed reuse |
| CN110030381A (en) * | 2019-03-12 | 2019-07-19 | 北京星际荣耀空间科技有限公司 | One kind being suitable for high speed and high pressure dynamic sealing device and aircraft |
| US20210348563A1 (en) * | 2020-05-05 | 2021-11-11 | Raytheon Technologies Corporation | Shrouded aircraft engine seal carrier |
| US11313471B2 (en) * | 2020-05-05 | 2022-04-26 | Raytheon Technologies Corporation | Shrouded aircraft engine seal carrier |
| CN112012954A (en) * | 2020-09-08 | 2020-12-01 | 北京星际荣耀空间科技有限公司 | Turbo pump sealing mechanism and turbo pump |
| CN112012954B (en) * | 2020-09-08 | 2022-04-12 | 北京星际荣耀空间科技股份有限公司 | Turbo pump sealing mechanism and turbo pump |
| CN112728087A (en) * | 2021-01-07 | 2021-04-30 | 湖北航天技术研究院总体设计所 | Shaft seal device for liquid rocket engine |
| CN113236781A (en) * | 2021-04-15 | 2021-08-10 | 大连理工大学 | Sealing ring with antifriction and heat dissipation structure on end face and machining method thereof |
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