CN209469612U - Dynamic sealing device and gas-turbine-pump combination for turbine pump - Google Patents
Dynamic sealing device and gas-turbine-pump combination for turbine pump Download PDFInfo
- Publication number
- CN209469612U CN209469612U CN201821864916.1U CN201821864916U CN209469612U CN 209469612 U CN209469612 U CN 209469612U CN 201821864916 U CN201821864916 U CN 201821864916U CN 209469612 U CN209469612 U CN 209469612U
- Authority
- CN
- China
- Prior art keywords
- ring
- sealing device
- pump
- dynamic sealing
- turbine
- 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.)
- Active
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 174
- 230000004308 accommodation Effects 0.000 claims abstract description 9
- 230000008094 contradictory effect Effects 0.000 claims abstract description 9
- 230000003068 static effect Effects 0.000 claims description 61
- 239000007788 liquid Substances 0.000 claims description 50
- 238000000926 separation method Methods 0.000 claims description 21
- 239000007800 oxidant agent Substances 0.000 claims description 18
- 230000001590 oxidative effect Effects 0.000 claims description 18
- 230000000670 limiting effect Effects 0.000 claims description 3
- 239000007789 gas Substances 0.000 description 27
- 230000000694 effects Effects 0.000 description 8
- 238000013461 design Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000000446 fuel Substances 0.000 description 3
- 239000011261 inert gas Substances 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 239000003380 propellant Substances 0.000 description 3
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 2
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000036961 partial effect Effects 0.000 description 2
- 230000002829 reductive effect Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 210000004907 gland Anatomy 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008450 motivation Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
- Mechanical Sealing (AREA)
Abstract
The utility model provides a kind of dynamic sealing device and gas-turbine-pump combination for turbine pump.Dynamic sealing device includes sealing and rotating part；The sealing and the rotating part are rotary structure；The sealing is used to be circumferentially spaced setting with the shaft of turbine pump, and the rotating part is used to be fixed at the outside of shaft；Wherein the sealing includes seal face, and the sealing includes the receiving portion being recessed inwardly in the seal face side, and the sealing further includes the passing away of one end connection described accommodation section and the other end through the other side of the sealing；The rotating part includes the counterface for contradicting the seal face, and the rotating part has centre bore and is used for through the centre bore noose in outside the shaft of turbine pump.The dynamic sealing device of the utility model can simplify gas-turbine-pump combination structure, shorten the size of gas-turbine-pump combination axial direction, so as to improve the performance of gas-turbine-pump combination.
Description
Technical field
The utility model relates to the technical field of sealing technology of turbine pump more particularly to a kind of dynamic sealing devices for turbine pump
And turbine pump.
Background technique
Important component of the turbine pump as turbopump-fed liquid rocket engine, effect are provided to engine operation
Required oxidant and fuel.To prevent propellant leakage, oxidant pump and petrolift usually require that effective dynamic sealing is arranged
Device.
The performance of dynamic sealing device will directly determine the life and reliability of turbine pump, be the key that liquid-propellant rocket engine
One of technology.Especially for the low temperature easy vaporized medium such as liquid oxygen, liquid hydrogen or methane, it usually needs setting two-stage more than sealing with
Form combined labyrinth and carbon gland.For example, in the existing turbine pump using multistage combined sealing means, multistage combined sealing means
It is preceding what for example can be used for directly sealing cryogenic media, afterbody can introduce inert gas isolation.
Current existing liquid engine turbine pump dynamic sealing technology at least has the disadvantages that
1) setting two-stage or more is usually required to seal.Multi-level sealing structure will cause the axial space size of sealing structure
Greatly, structure is complicated, to keep turbine pump shaft critical speed low, turbine pump rigidity and stability are poor.
2) inert gas isolation usually introduced by floating ring, thus when liquid engine being caused to work swept-off gases consumption
Amount is big.
Utility model content
The purpose of the utility model is to overcome the deficiencies in the prior art, provide a kind of dynamic sealing device for turbine pump
And turbine pump improves sealing effect with the structure of the existing dynamic sealing device of simplification.
The utility model provides a kind of dynamic sealing device for turbine pump, including sealing and rotation on one side
Portion；The sealing and the rotating part are rotary structure；The sealing be used for the shaft of turbine pump circumferentially between
Every setting, the rotating part is used to be fixed at the outside of shaft；Wherein the sealing includes seal face, the sealing
Portion includes the receiving portion being recessed inwardly in the seal face side, the sealing further include one end connection described accommodation section and
Passing away of the other end through the other side of the sealing；The rotating part includes the abutting end for contradicting the seal face
Face, the rotating part have centre bore and are used for through the centre bore noose in outside the shaft of turbine pump；In the rotating part
When rotating with turbine pump shaft, the liquid in the pump chamber of turbine pump between the seal face and the counterface by entering
To described accommodation section, and the separation gas by introducing between the sealing and the shaft will leak to described accommodation section
Liquid carry along the passing away to except dynamic sealing device.
In one embodiment, the sealing includes shell and static components, and the rotating part includes rotating ring；Wherein institute
It states static components to be disposed in the housing, and the static components connect the shell along one end of first direction, the other end is used
In the conflict rotating ring；Described accommodation section includes the groove of the other end set on the static components, and the rotating ring is logical
It crosses and contradicts the seal face and close the groove；The passing away includes being set to the stationary ring group along the first direction
The conduction hole of part releases chamber by what the case inside and the static components limited, and logical set on releasing for the shell
Road；Wherein one end of the conduction hole is connected to the groove, and releases chamber, described one end for releasing channel described in other end connection
Chamber is released described in connection, and the other end is connected to external environment；When the rotating ring is rotated with turbine pump, it is in dynamic sealing device
Except liquid pass through and enter the groove between the seal face and the counterface of the rotating ring, and by along institute
State static components inside be introduced into the groove separation gas would leak into liquid in the groove via the conduction hole,
It is described to release chamber and the channel of releasing is carried to except dynamic sealing device.
In one embodiment, the static components include stationary seat, stationary ring, bellows and back seat；The stationary seat packet
Annular groove is included, the stationary ring is mounted in the annular groove；Wherein the stationary ring is along described in the conflict of one end of the first direction
The inner face of stationary seat, and the other end abuts the rotating ring；The both ends of the bellows are separately connected the stationary seat and described
Back seat, the back seat are fixedly connected with the shell far from the stationary seat side；Wherein the bellows is in compressive state, from
And the power towards the rotating ring is applied to the stationary seat and the stationary ring, so that the stationary ring and the rotating ring are fitted close.
In one embodiment, sealing ring is equipped between the shell and the stationary seat, thus the static components, institute
It states and releases chamber described in limiting between shell and the sealing ring.
In one embodiment, the sealing ring is general plug sealing ring or bellows.
In one embodiment, the seal face for being used to contradict the rotating ring of stationary ring described in the static components
Equipped with the groove, so that the seal face of the stationary ring is divided by the groove along the seal face arranged radially
Interior seal face and external seal end face.
In one embodiment, the surface of the interior seal face cooperation of the rotating ring and the stationary ring is machined with interior dynamic
Indent, and the internal diameter of the interior dynamic pressure groove and the rotating ring penetrates through；Match the external seal end face of the rotating ring and the stationary ring
The surface of conjunction is machined with outer dynamic pressure groove, the outer diameter perforation of the outer dynamic pressure groove and the rotating ring.
In one embodiment, the groove is the circumferential direction along the seal face around the stationary ring centre bore
Annular groove.
The utility model another aspect provides a kind of turbine pump installation, including oxidant pump, petrolift and such as
The upper dynamic sealing device；Wherein the dynamic sealing device is set between the oxygen pump and the petrolift.
In one embodiment, the dynamic sealing device includes the first dynamic sealing device and the second dynamic sealing device；Wherein
Rotating ring in first dynamic sealing device and the oxidant pump are coaxially disposed, the rotating ring in second dynamic sealing device with
The petrolift coaxial arrangement.
The dynamic sealing device of the utility model, can effectively shorten the turbine pump movable sealing structure of existing liquid engine
Axial dimension improves the performance of turbine pump to keep the integral layout of turbine pump more compact；And by making to use in sealing device
It is communicated in the fluid course of pump chamber leakage with the external environment except dynamic sealing device, so that the pressure of swept-off gases is slightly larger than liquid
When the pressure of circulation road, the liquid stream of leakage can be carried to except dynamic sealing device, thus under same design parameter, pole
Reduce the consumption of separation gas greatly.
It is to be understood that above-mentioned general description and following specific embodiments are merely illustrative and illustrative, not
The range to be advocated of the utility model can be limited.
Detailed description of the invention
Following attached drawing is the part of specification of the utility model, and the example for depicting the utility model is implemented
Example, appended attached drawing are used to illustrate the principles of the present invention together with the description of specification.
Fig. 1-3 is the schematic cross-sectional view of the dynamic sealing device of the utility model embodiment in axial direction.
Fig. 4 is the movable ring structure schematic diagram of the utility model embodiment.
Fig. 5-7 is the schematic cross-sectional view of the dynamic sealing device of the utility model embodiment in axial direction.
Fig. 8 is the movable ring structure schematic diagram of the utility model embodiment.
Fig. 9 is the schematic cross-sectional view of the dynamic sealing device of another embodiment of the utility model in axial direction.
Figure 10 is the structural schematic diagram of the gas-turbine-pump combination of the utility model embodiment.
Specific embodiment
The various exemplary embodiment of the utility model is now described in detail, which is not considered as practical to this
Novel limitation, and it is understood as the more detailed description of some aspects to the utility model, characteristic and embodiment.
It, can be to the specific implementation of the utility model specification without departing substantially from the scope of the utility model or spirit
Mode does a variety of improvements and changes, this will be apparent to those skilled in the art.By the specification of the utility model
Obtained other embodiments are apparent obtain for technical personnel.Present specification and embodiment are only exemplary
's.
For example, the oxidant pump and petrolift in the gas-turbine-pump combination of liquid engine can be coaxially disposed, and dynamic sealing fills
Setting can be set between oxidant pump and petrolift, so that the oxidant of leakage and fuel agent be avoided to be mixed with each other.For example,
In the sealing structure of the gas-turbine-pump combination of liquid engine, the sealing structure of gas-turbine-pump combination be can be set in oxidant pump or fuel
The entrance of pump.For example, sealing structure may include two-stage sealing, wherein first order sealing can be contact end face seal, use
In directly sealing propellant；The second level can use float ring seal, to introduce gas barrier.For example, sealing structure may be used also
Think that three-level seals.For example, the first order can be centrifugal seal in three-level sealing structure, the second level can be dry gas seals,
The first order and the second level can be provided commonly for sealing liquid oxygen；The third level can be float ring seal, for introducing gas barrier.
When turbine pump takes the sealing structure of two-stage and two-stage or more, sealing axis big, knot along its axial bulk
Structure is complicated, to keep turbine pump shaft critical speed low, turbine pump rigidity and stability are poor.In addition, being isolated in inert gas by floating
In the case that rotating ring introduces, required swept-off gases' consumption is big when engine operation, thus vehicle need to carry it is additional
Load, reduce carrying capacity.
The utility model provides a kind of dynamic sealing device for turbine pump on one side.Referring to Fig. 1, dynamic sealing device
Including shell 1, static components 2 and rotating ring 3.Wherein static components 2 are set in shell 1, and static components 2 are along first direction S1's
One end connects shell 1, and the other end is for contradicting rotating ring 3.It is limited between the inside of shell 1 and the outside of static components 2 and releases chamber
B, shell 1 be equipped with one end connection and release chamber B, and other end connection external environment releases channel A.
It should be noted that the first direction S1 to anticipate as shown in the figure can be identical as the axial direction of dynamic sealing device, big
Causing identical or mutual angle is acute angle, for example, angle can be in 0-30 degree.Those skilled in the art are interpreting the scope of the utility model
When, first direction must not be limited to completely to the direction S1 as marked in attached drawing, can not be explained first direction with limiting
For the axial direction of dynamic sealing device, to cause the diminution of the protection scope of the utility model.
The end face (after contradicting with rotating ring, which is seal face) of the other end of static components 2 includes groove D
(for example, groove D can be arranged around the center of end face, for example, the center of end face is the geometric center of end face outer profile), and
Rotating ring 3 is closed groove D by contradicting the end face.Static components 2 include the conduction hole C along first direction S1, conduction hole C's
One end is connected to the groove D, and releases chamber B described in other end connection.
When rotating ring 3 is rotated with turbine pump, the liquid except (for example, in pump chamber PL) dynamic sealing device passes through rotating ring
Contact surface between 3 and the end face enters groove D, and introduces groove D by the inside of the static components 2 along dynamic sealing device
The liquid that would leak into groove D of separation gas G via conduction hole C, release chamber B and release channel A and carry to dynamic sealing and fill
Except setting.
In this embodiment, shell 1 and static components 2 are equivalent to the sealing in the utility model, and rotating ring 3 is equivalent to rotation
Transfer part, groove D are equivalent to receiving portion, and conduction hole C, release chamber B and release channel A and collectively form passing away.
The sealing device for turbine pump of the utility model passes through the groove for storing and being discharged for leakage liquid, drainage
Hole releases chamber and releases channel, can with a small amount of separation gas, the liquid of leakage can be carried to dynamic sealing device it
Outside, movable sealing structure is simplified, the complexity of gas-turbine-pump combination is reduced, so as to improve the working performance of gas-turbine-pump combination.
For example, shell 1, static components 2 and rotating ring 3 are that rotary structure (only illustrates to be located at turn around axis side in Fig. 1
Sectional structure).For example, the axial location of three can be coincided with one another or be substantially overlapped.Dynamic sealing device in axial direction wraps
The space for the coordinating example such as shaft of coaxial turbine pump group (for example, gas-turbine-pump combination is made of oxidant pump and petrolift) is included,
I.e. the shaft of coaxial turbine pump group is cooperated by passing through the space in axial direction of dynamic sealing device with dynamic sealing device.Example
Such as, specifically, shell 1 can be along the perforative rotary structure of first direction S1, for example, it can be on first direction S1
For the structure that (direction in Fig. 1 from left to right) diameter is gradually increased from one end to the other side.For example, static components 2 and turbine
The shaft 6 of pump group is spaced setting.
With continued reference to Fig. 1, for example, rotating ring 3 can be fixed at the outside of shaft 6 (for example, the inner hole and shaft of rotating ring
6 are circumferentially fitted close), to be rotated together with when shaft 6 is rotated with shaft 6.For example, static components 2 and shell 1 can with turn
The setting of the interval of axis 6.I.e. in the axial direction, annular space is formed between static components 2 and the shaft 6 of shell 1 and gas-turbine-pump combination,
The annular space is used for the introducing of separation gas G.
For example, static components 2 have revolving structure, and it is placed coaxially within shell 1 with shell 1.Referring to fig. 2, example
Such as, static components 2 can be fixedly connected with the inside of shell 1 in one end of above-mentioned first direction S1, and the end of the other end is for supporting
Touching is in the end face of rotating ring 3, to may exist the first fit clearance 12 between the outside of static components 2 and the inside of shell 1.Example
Such as, along first direction S1, ruler of the fit clearance 12 in revolving body radial direction (i.e. being approximately perpendicular to the direction of S1 in Fig. 2)
It is very little to differ in size.For example, the two can be close-fitting knot in partial region (position of setting sealing structure 4,5)
Conjunction mode.In partial region, there can be larger gap between the outside and shell 1 of static components 2.For example, along first direction S1, it is quiet
Two biggish gaps 12 can be included at least between the outside and shell 1 of ring assemblies 2, wherein one of the small end close to shell 1
A gap 12, which is formed, releases chamber B, is used for close to the larger gap 12 of the big end of static components 2 when rotating ring 3 rotates, static components
2 covering, such as pump chamber can be connected to.For example, can be sealed between two larger gaps 12 with sealing ring 4, to avoid
Pump chamber liquid is directly leaked to release in chamber B.
It can be with as shown in figure 3, further, between the shaft 6 of inside and gas-turbine-pump combination of the static components 2 far from shell 2
Limit annular space 26.In turbine pump work, separation gas can be between gas-turbine-pump combination shaft and the inside of static components 2
Annular space 26 introduce (for example, the source of separation gas can be outside liquid engine shell).By static components 2 with
The annular space 26 formed between the shaft 6 of gas-turbine-pump combination introduces separation gas G, can limit liquid in turbine pump work
It is leaked from the pump chamber of turbine pump through the contact surface of static components 2 and rotating ring 3, thus avoid being mixed between the liquid leaked,
And the gas for entering groove can be carried in the environment to except dynamic sealing device.
As described above, the other end of static components 2 is for contradicting in rotating ring 3, so that static components 2 are in the other end
End face forms seal face 220.Wherein, seal face 220 can prevent the liquid in pump chamber by the seal face 220 into
Enter.Since static components 2 are rotary structure, seal face 220 is that (seal face has and whirlpool for ring structure
Take turns the ring structure of pump group shaft concentric openings), by the hydraulic seal in pump chamber PL, to avoid the liquid in pump chamber in its circumferential direction
Body leaks between static components 2 and rotating ring 3.As described above, the end face of one end of the close rotating ring 3 of static components 2 is equipped with recessed
Slot D, and static components 2 are equipped with the conduction hole C of connection groove D, limit between conduction hole C connection static components 2 and shell 1
Release chamber B.Shell 1 is connected to this equipped with one end and releases chamber B, and the other end is communicated in the environment except the dynamic sealing device
Release channel A.For example, the environment except dynamic sealing device can be atmospheric environment.
Referring to fig. 4, for example, rotating ring 3 can by the fixed noose of its centre bore 30 outside the shaft 6 of gas-turbine-pump combination, with
Turbine pump rotates jointly.For example, the centre bore 30 of rotating ring 3 and the shaft 6 of gas-turbine-pump combination can be fitted close.At this point, in turbine
When the shaft 6 of pump rotates, rotating ring 3 is rotated relative to static components 2, and the liquid except dynamic sealing device can pass through seal face
220 leak into groove D.At this point, by the annular space 26 between the inside of static components 2 and gas-turbine-pump combination shaft 6
Introduce separation gas G, can with the liquid of entry deterrence groove D or from seal face 220 enter liquid from static components 2 with
It is leaked between rotating ring 3.In addition, the separation gas G being introduced into (can be sealed along rotating ring 3 and the interior seal face of static components 2
The part between groove and shaft of end face) enter groove D, so that drive leaks to groove under separation gas G effect
The liquid of D via conduction hole C, release chamber B and release the environment that channel A is discharged into except dynamic sealing device.For example, dynamic sealing device
Except environment can be atmospheric environment, at this point, the shell of liquid engine, which is also correspondingly arranged connection, releases the row of channel A
Portal.
Referring to Fig. 5, in one embodiment, static components 2 include stationary seat 21, stationary ring 22, bellows 23 and back seat 24.
For example, back seat 24, bellows 23, stationary seat 21 and stationary ring 22 can be arranged successively setting along first direction S1.Stationary seat 21 can
To include annular groove 210, the stationary ring 22 is mounted in the annular groove 210.Wherein stationary ring 22 is along one end of first direction S1
The inner face (i.e. the bottom surface of annular groove 210) of stationary seat 21 is contradicted, and the end face of the other end contradicts the rotating ring 3.The ripple
The both ends of pipe 23 are separately connected the stationary seat 21 and the back seat 24, and 21 side of separate stationary seat of back seat 24 is fixedly connected described
The inside of shell 1.Wherein bellows 23 may be at compressive state, to apply court to the stationary seat 21 and the stationary ring 22
To the power of the rotating ring 3, it is fitted close the stationary ring 22 with dynamic 3 rings, and then the end face shape of the close rotating ring 3 of stationary ring 22
At seal face 220, further alleviate leakage of the pump chamber liquid from seal face 220.
With continued reference to Fig. 5, for example, in one embodiment, sealing ring 4 is equipped between shell 1 and stationary seat 21, thus quiet
It is limited between ring assemblies 2, shell 1 and sealing ring 4 and releases chamber B.As shown in figure 5, ring type seal 4 is arranged in stationary seat 21 and shell
Between body 1, so that the inside in the outside of static components 2 and shell 1, which is formed by cooperation gap 12, is isolated into two parts,
In first part as releasing chamber B.Liquid after leaking to annular groove D and conduction hole C between stationary ring 22 and rotating ring 23
Channel A can only be released from chamber B entrance is released and enter eventually into the environment except dynamic sealing device.The connection of another part is moved close
The pump chamber environment of seal apparatus.The opening of ring type seal 4 can for example be hindered towards the above-mentioned another part of pump chamber, the retaining ring 5
The only movement of sealing ring in axial direction.
In this embodiment, the one end by stationary seat 21 far from stationary ring 22 chamber B, bellows 23 are released close to the one of shell 1
Side and the inside of shell 1 limit jointly.But releasing chamber B may be other structures, as long as guaranteeing that its both ends connects respectively
Lead to conduction hole C and release channel A, and the other positions for releasing chamber B are sealed.
In this embodiment, for example, the sealing ring 3 can be general plug sealing ring.For example, the opening court of general plug sealing ring
To the space being connected between shell 1 and stationary seat 21 and with pump chamber, thus after turbine pump rotates and increases pump chamber fluid pressure, high pressure
Liquid enters above-mentioned space, so that the lip of general plug sealing ring opens and is fitted tightly over the shell 1 and stationary seat positioned at two sides
On 21, to further improve the sealing effect of dynamic sealing device.
Referring to Fig. 6, for example, above-mentioned sealing ring can also be substituted with bellows 7.Clearly as bellows is in a first direction
S1 is upper can biggish size, therefore, one end of bellows 7 directly can be connected stationary seat 21, the other end connects shell 1
Inside, thus by two bellowss 23,7 stationary seat 21, shell 1 inside between limit release chamber B.The utility model
Embodiment further reduces stationary seat 21 first by the way that bellows 7 is arranged between the inside of shell 1 and stationary seat 21
Size on the S1 of direction, improves the size flexible adjustment of stationary seat 21 and shell 1, and can further decrease liquid and start
The quality of machine improves the carrying capacity of such as carrier rocket.
In this embodiment, for example, shell 1 can be arranged with stationary seat 21 along the interval first direction S1, thus bellows 7
Both ends by being separately connected shell 1 and stationary seat 21 in the inside of shell 1, stationary seat 21, back seat 24 and two bellowss 23,
It is limited between 7 and releases chamber B.For example, being intervally installed in stationary seat 21 and shell 1, and by connecting respectively along first direction S1
Connect the inside of stationary seat 21 and shell 1 bellows 7 replace ring type seal in the case where, conduction hole C can with release channel A
It is arranged along direction perpendicular to one another, effect is discharged so as to improve leakage liquid.
Referring to Fig. 7, for example, in one embodiment, the seal face 220 of the close rotating ring 3 of stationary ring 22 is equipped with groove D,
To which the seal face 220 of stationary ring 22 is divided by groove D along the interior seal face 221 of 220 arranged radially of seal face and outer
Seal face 222.Wherein, the liquid leaked in pump chamber can enter groove D by 222 face of external seal end, out of dynamic sealing device
The separation gas G of side can by interior seal face 221 enter groove D, and by the liquid of leakage carry to dynamic sealing environment it
Outside.The dynamic sealing device of the embodiments of the present invention, by be set to stationary ring 22 seal face 220 groove by seal face
It is divided into interior seal face 221 and external seal end face 222, can preferably avoid the leakage of pump chamber liquid and avoids different pumps
The liquid of chamber is mixed, and improves the working performance of turbine pump.
With continued reference to Fig. 7, for example, in one embodiment, the surface that the inner sealing surface 221 of rotating ring 3 and stationary ring 22 cooperates
It is machined with interior dynamic pressure groove 31, and the internal diameter of interior dynamic pressure groove 31 and rotating ring 3 penetrates through.The external seal face 222 of rotating ring 3 and stationary ring 22 cooperates
Surface be machined with outer dynamic pressure groove 32, the outer diameter of outer dynamic pressure groove 32 and rotating ring 3 penetrates through.The dynamic sealing of the utility model embodiment fills
It sets, by processing interior dynamic pressure groove 31 and outer dynamic pressure groove 32 in rotating ring 3, realizes the non-contact operation of seal face, effectively drop
The low abrasion of seal face, improves the working life of dynamic sealing device.
Referring to Fig. 8, in this embodiment, for example, the inner diameter location of the driven pressure ring 3 of interior dynamic pressure groove 31 is to the outside of rotating ring 3
Extend.For example, the lateral dimension (width) of interior dynamic pressure groove 31 gradually increases to the outer direction from the internal diameter close to dynamic pressure ring 3.Together
Sample, the outer radial position of the driven pressure ring 3 of outer dynamic pressure groove 32 extends inwardly.For example, the lateral dimension (width) of outer dynamic pressure groove 32
It is gradually reduced from the outer diameter radially inward close to dynamic pressure ring 3.For example, the opening of inside and outside dynamic pressure groove 31,32 is blade-shaped, and
The angle of the circumferential direction of inside and outside dynamic pressure groove 31,32 center line along its length and dynamic pressure ring 3 is between 5-30 degree.Into one
Step ground, the angle is between 5-18 degree.The flute profile of rotating ring shown in Fig. 8 is helicla flute, for example, the flute profile of rotating ring can also be straight
Wire casing or T-slot.The embodiments of the present invention can be with by adjusting helical angle, groove width ratio, slot dam ratio, groove depth, slot number etc.
Sealing performance is optimized for different duty parameters, reduces pump chamber dielectric leakage amount, preferably reduces the mill of seal face
Damage, more convenient makes separation gas introduce annular groove D, further improves the sealing effect of dynamic sealing device.
In this embodiment, the lubricating film of the seal face formed between stationary ring 22 and rotating ring 3 is micron order, is released simultaneously
Chamber B and external environment (for example, atmosphere) communicate, and therefore, as long as the pressure of separation gas is slightly above environmental pressure, pump can be realized
Chamber medium is effectively isolated, to greatly reduce the consumption of separation gas when engine operation.
In one embodiment, groove D is the annular groove of the circumferential direction along seal face 220.For example, annular groove
The width of D can be slightly larger than the width of conduction hole C.For example, seal face in the radial direction, the setting that can be spaced each other
Multiple tracks annular groove D (multiple tracks annular groove for example can be using the geometric center of seal face 220 as the center of circle), and per pass annular is recessed
Slot D, which passes through conduction hole C and is connected to, releases chamber B, to stop by forming multiple tracks to the medium of leakage, preferably prevents pump chamber
The leakage of medium
In one embodiment, conduction hole C runs through stationary ring 22 and stationary seat 21, and the both ends of conduction hole C are respectively communicated with ring
Connected in star D and release chamber B.For example, conduction hole C includes multiple, and multiple conduction hole C are in the circumferential direction of corresponding annular groove D
It is upper uniformly distributed.For example, the cross section of conduction hole C can be round, trapezoidal, rectangle or ellipse etc..For example, driven torus 3 is directed toward
On the direction of stationary ring 22, conduction hole C can be angling hole gradually close to shaft 6, to make to seal from stationary ring 22 and rotating ring 3
The pump chamber medium that end face 220 leaks, can be automatically along conduction hole C to chamber B flowing be released, to further improve conduction hole
Performance is drained, the reliability of dynamic sealing device is improved.
It should be noted that conduction hole C is not necessarily linearity hole along its length, it is also possible to curve type hole.
Referring to Fig. 9, for example, in one embodiment, static components 2 may include inside and outside two parts 201,202.Its
In, the first part 201 positioned at outside is separately connected shell 1 and rotating ring 3 along the both ends of first direction S1, positioned at the second of inside
Part 202 is separately connected shell 1 and rotating ring 3 along the both ends of first direction S1.That is, 202 edge of first part 201 and second part
The radial direction of the end face of rotating ring 3 is alternatively arranged.It is released to which first part 201, second part 202 and shell 1 limit jointly
Chamber B.
Specifically, first part 201 includes the bellows 203 set gradually along first direction S1, stationary seat 204, stationary ring
205.Wherein, stationary seat 204 is equipped with annular groove, and one end of stationary ring 205 is contradicted in the bottom surface of annular groove, and the other end abuts described dynamic
Ring 3, the both ends of bellows 203 are separately connected 205 side of separate stationary ring of shell 1 and stationary seat 204.Similarly, it is located inside
Second part 202 set gradually bellows 206, stationary seat 207, stationary ring 208 along first direction S1.Wherein, stationary seat 207 is set
There is annular groove, one end of stationary ring 208 is contradicted in the bottom surface of annular groove, and the other end abuts the rotating ring 3, one end of bellows 206
208 side of separate stationary ring of stationary seat 207 is connected, the other end connects shell 1 by back seat 209.
In this embodiment, annular groove D by stationary ring 206 and second part 202 in first part 201 stationary ring 208 it
Between annular gap constitute.Specifically, the width of annular groove be stationary ring 206,208 from corresponding stationary seat 204,207 to dynamic
The distance between 3 place side extension of ring.In addition, the width of conduction hole C is stationary seat 204, the distance between 207.For example,
The width of annular groove D can be 1.5-3 times of the width of conduction hole C.The embodiments of the present invention, by by static components 2
Two parts 201 inside and outside being divided into, 202, and with the space between inside and outside stationary ring 205,208 as annular groove D and with inside and outside quiet
On the one hand gap between ring seat 204,207 can improve the sealing performance of dynamic sealing device as conduction hole C, simplify sealing
On the other hand structure can be avoided the processing step that seal groove is directly opened on stationary ring, to reduce difficulty of processing.
In this embodiment, the conduction hole C of static components 2 is arranged between two stationary seats 204,207, and releases channel
A and conduction hole C are arranged substantially perpendicular to each other, to facilitate the discharge of leakage liquid.Ripple in the first part 201 of static components 2
It is limited between pipe 203, the bellows 206 of second part 202, shell 1 and two stationary seats 204,207 and releases chamber B, thus nothing
It needs that sealing device additionally is arranged between shell 1 and stationary seat, improves the compact of the sealing structure of dynamic sealing device.
Further, since the size for releasing the volume of chamber B, the size of annular groove D and conduction hole C can according to need and pass through
Adjustment the distance between first part 201 and second part 202 easily vary, and therefore, greatly improve dynamic sealing device
Adaptability.For example, the volume for releasing chamber B can be by two parts of increase static components 2 in the case where leaking more
The distance between 201,202, increase its amount for accommodating leakage liquid, to improve the redundancy of dynamic sealing device.
The dynamic sealing device of the utility model can be convenient leakage by the way that static components are divided into inside and outside two parts
Pump chamber medium and separation gas enter annular groove D, improve the adaptability of dynamic sealing device, improve dynamic sealing device and let out to from pump chamber
The storage and discharge ability of the liquid of leakage, to significantly improve the sealing effect that dynamic sealing device combines turbine pump.
The utility model another aspect provides a kind of turbine pump installations.Referring to Figure 10, gas-turbine-pump combination includes oxidation
Agent pump 100, petrolift 200 and dynamic sealing device 300 as described above, wherein dynamic sealing device 300 is set to oxidant pump 100
Between petrolift 200.For example, oxidant pump 100 and petrolift 200 respectively its entrance side or outlet side be arranged one move it is close
Seal apparatus 300, so that two dynamic sealing devices 300 can prevent the liquid of corresponding oxidant pump 100 or petrolift 200 respectively
Leakage.Since gas-turbine-pump combination uses the dynamic sealing device of the utility model, there is corresponding technical effect, reference can be made to it
Preceding description.
With continued reference to Figure 10, for example, in one embodiment, rotating ring 3 in two dynamic sealing devices 300 can respectively with
Oxidant pump 100 and petrolift 200 are fixedly arranged on same rotary shaft 61,62.When rotary shaft revolves 61,62 turns, two dynamic sealing dresses
It sets 300 rotating ring 3 to rotate relative to static components 2, so that the liquid except dynamic sealing device 300 passes through rotating ring 3 and stationary ring group
2 contact surface of part enters groove D, and by between dynamic sealing device 300 and corresponding rotary shaft 61 or rotary shaft 62
Gap introduce the separation gas of groove by the liquid leaked in the groove through the conduction hole, described release chamber and described let out
Channel is carried to except the dynamic sealing device 300 out.For example, the passing away of shell can be connected to liquid engine shell
400 tap, so that the liquid of pump chamber leakage can enter external environment by the tap of engine 400.
In this embodiment, for example, oxidant pump 100 and petrolift 200 can share same shaft.In the case,
Rotating ring in two dynamic sealing devices 300 can be rotated with shared shaft, and two dynamic sealing devices 300 are realized respectively to right
The sealing of the oxidant pump 100 or petrolift 200 answered.
The dynamic sealing device of the utility model can simplify the sealing structure of gas-turbine-pump combination, and the existing liquid that effectively shortens is sent out
The axial dimension of the turbine pump dynamic sealing of motivation, keeps the integral layout of turbine pump more compact；And by making leaked gas stream
Road is identical as the external environment of dynamic sealing device, under same design parameter, greatly reduces the consumption of separation gas.
The above descriptions are merely exemplary embodiments of the present utility model, in the design that does not depart from the utility model and
Under the premise of principle, the equivalent changes and modifications that any those skilled in the art is made should belong to the utility model guarantor
The range of shield.
Claims (10)
1. a kind of dynamic sealing device for turbine pump, which is characterized in that including sealing and rotating part；The sealing and institute
Stating rotating part is rotary structure；The sealing is used to be circumferentially spaced setting, the rotating part with the shaft of turbine pump
For being fixed at shaft；
Wherein the sealing includes seal face, and the sealing includes the receiving being recessed inwardly in the seal face side
Portion, the sealing further include that the discharge of one end connection described accommodation section and the other end through the other side of the sealing is logical
Road；The rotating part includes the counterface for contradicting the seal face, and the rotating part has centre bore and for passing through institute
Centre bore noose is stated in outside the shaft of turbine pump；
When the rotating part is rotated with turbine pump shaft, liquid in the pump chamber of turbine pump passes through the seal face and described
Counterface enters to described accommodation section, and the separation gas by introducing between the sealing and the shaft will leak
Liquid to described accommodation section is carried along the passing away to except dynamic sealing device.
2. dynamic sealing device according to claim 1, which is characterized in that the sealing includes shell and static components,
The rotating part includes rotating ring；
Wherein the static components are disposed in the housing, and the static components connect the shell along one end of first direction
Body, the other end is for contradicting the rotating ring；
Described accommodation section includes the groove of the other end set on the static components, and the rotating ring is described close by contradicting
Sealing end face is closed by the groove；The passing away includes the conduction hole that the static components are set to along the first direction,
Chamber is released by what the case inside and the static components limited, and releases channel set on the shell；It is wherein described
One end of conduction hole is connected to the groove, and chamber is released described in other end connection, lets out described in one end connection for releasing channel
Chamber out, and the other end is connected to external environment；
When the rotating ring is rotated with turbine pump, liquid except dynamic sealing device passes through the seal face and described dynamic
The counterface of ring enters the groove, and the separation gas by introducing the groove along the inside of the static components
The liquid that would leak into the groove via the conduction hole, it is described release chamber and it is described release channel carry to dynamic sealing fill
Except setting.
3. dynamic sealing device according to claim 2, which is characterized in that the static components include stationary seat, stationary ring, wave
Line pipe and back seat；
The stationary seat includes annular groove, and the stationary ring is mounted in the annular groove；Wherein the stationary ring is along the first party
To one end contradict the inner face of the stationary seat, and the other end abuts the rotating ring；The both ends of the bellows are separately connected
The stationary seat and the back seat, the back seat are fixedly connected with the shell far from the stationary seat side；
Wherein the bellows is in compressive state, to apply the stationary seat and the stationary ring towards the rotating ring
Power, so that the stationary ring and the rotating ring are fitted close.
4. dynamic sealing device according to claim 3, which is characterized in that be equipped between the shell and the stationary seat close
Seal, to release chamber described in limiting between the static components, the shell and the sealing ring.
5. dynamic sealing device according to claim 4, which is characterized in that the sealing ring is general plug sealing ring or ripple
Pipe.
6. dynamic sealing device according to claim 3, which is characterized in that stationary ring described in the static components is used to support
The seal face for touching the rotating ring is equipped with the groove, so that the seal face of the stationary ring is separated by the groove
For along the interior seal face of the seal face arranged radially and external seal end face.
7. dynamic sealing device according to claim 6, which is characterized in that the interior sealing of the rotating ring and the stationary ring
The surface of end face cooperation is machined with interior dynamic pressure groove, and the internal diameter of the interior dynamic pressure groove and the rotating ring penetrates through；The rotating ring and institute
The surface for stating the external seal end face cooperation of stationary ring is machined with outer dynamic pressure groove, and the outer diameter of the outer dynamic pressure groove and the rotating ring passes through
It is logical.
8. dynamic sealing device according to claim 6, which is characterized in that the groove is the circumferential direction along the seal face
It is directed around the annular groove of the stationary ring centre bore.
9. a kind of gas-turbine-pump combination, which is characterized in that including oxidant pump, petrolift and as described in claim any one of 1-8
Dynamic sealing device；Wherein the dynamic sealing device is set between the oxidant pump and the petrolift.
10. gas-turbine-pump combination according to claim 9, which is characterized in that the dynamic sealing device is filled including the first dynamic sealing
It sets and the second dynamic sealing device；Wherein the rotating ring in first dynamic sealing device and the oxidant pump are coaxially disposed, described
Rotating ring and the petrolift in second dynamic sealing device are coaxially disposed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821864916.1U CN209469612U (en) | 2018-11-13 | 2018-11-13 | Dynamic sealing device and gas-turbine-pump combination for turbine pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821864916.1U CN209469612U (en) | 2018-11-13 | 2018-11-13 | Dynamic sealing device and gas-turbine-pump combination for turbine pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209469612U true CN209469612U (en) | 2019-10-08 |
Family
ID=68088487
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821864916.1U Active CN209469612U (en) | 2018-11-13 | 2018-11-13 | Dynamic sealing device and gas-turbine-pump combination for turbine pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209469612U (en) |
-
2018
- 2018-11-13 CN CN201821864916.1U patent/CN209469612U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN209586768U (en) | Dynamic sealing device and turbine pump installation for turbine pump | |
| CN109737094A (en) | Dynamic sealing device and gas-turbine-pump combination for turbine pump | |
| CN110034635B (en) | Shaft seal device and rotating electrical machine | |
| US6494460B2 (en) | Rotary barrier face seal | |
| US11608897B2 (en) | Slide component | |
| US20200182299A1 (en) | Sliding part | |
| JP4763920B2 (en) | Multistage shaft seal device | |
| JPWO2009066664A1 (en) | Mechanical seal and tandem seal | |
| US5377216A (en) | Sealing method and arrangement for turbine compressor and laser employing same | |
| KR900702238A (en) | Athletic seals for impeller pump | |
| CN105422863A (en) | Combined type sealing device for liquid oxygen pump | |
| CN209469612U (en) | Dynamic sealing device and gas-turbine-pump combination for turbine pump | |
| US20220235772A1 (en) | Vacuum pumping system having an oil-lubricated vacuum pump | |
| CN207333648U (en) | The sealing ring and its sealing device of non-contact zero leakage | |
| US2933044A (en) | Turbo monobloc pump | |
| CN201547429U (en) | Double-channel rotatable water joint device | |
| US10250097B2 (en) | Static pressure seal-equipped motor | |
| JP4000324B2 (en) | Tandem dry contact shaft seal device | |
| JP4001594B2 (en) | Tandem dry contact shaft seal device | |
| CN112145471B (en) | Gas disengaging type combined dynamic sealing device | |
| CN205876790U (en) | Oxyhydrogen engine oxygen is circumference sectional type helium sealing device for turbopump | |
| CN206600472U (en) | The dry gas sealing device of long distance pipeline natural gas compressor | |
| CN101695686A (en) | Tight anti-explosion horizontal centrifuge | |
| JPH09196185A (en) | Seal device for fluid machinery | |
| CN105952900B (en) | Sealing ring and mechanically-sealing apparatus with waveform groove end face |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240515 Address after: H1, AVIC International Plaza, No.13 Ronghua South Road, Beijing Economic and Technological Development Zone, Daxing District, Beijing, 100076 Patentee after: Blue Arrow Space Technology Co.,Ltd. Country or region after: China Address before: 710077 East Building, four floor, aerospace science and technology, civil and integration innovation center, 32 United South Road, Xi'an, Shaanxi Patentee before: SHAANXI LANDSPACE TECHNOLOGY Co.,Ltd. Country or region before: China |