CN205841769U - A kind of dry gas sealing device - Google Patents
A kind of dry gas sealing device Download PDFInfo
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- CN205841769U CN205841769U CN201620758575.4U CN201620758575U CN205841769U CN 205841769 U CN205841769 U CN 205841769U CN 201620758575 U CN201620758575 U CN 201620758575U CN 205841769 U CN205841769 U CN 205841769U
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- dry gas
- rotating ring
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- sealing
- gas
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Abstract
This utility model relates to centrifugal compressor field of sealing technology, particularly to a kind of dry gas sealing device.By the double gas dry gas seal of tandem with double labyrinths, utilize principle of hydrodynamics, by the double gas dry gas seal of tandem with double labyrinths, the noncontact realizing seal face runs, run owing to sealing noncontact, need not any liquid lubricate and cool down, can effectively prevent poisonous or inflammable and explosive leakage of compressed gas to atmospheric side or bearing housing side；And sealing pair of friction components material is not limited by PV value, it is suitable as the axle envelope of high rotating speed, high pressure equipment, and sealing power consumption is only about the 5 10% of contacting mechanical seal.
Description
Technical field
This utility model relates to centrifugal compressor field of sealing technology, particularly to a kind of dry gas sealing device.
Background technology
Along with the software design manufactures such as international advanced technology impeller wheel of centrifugal machine spiral case and magnetic suspension bearing and ultrahigh speed electricity
Motivation technology etc. is applied to the exploitation of centrifugal compressor, and the core technology of centrifugal compressor have shared aeroplane engine manufacture neck
The top technology in territory.Software is analyzed to impeller, spiral case, main shaft and unit vibration, critical speed etc. by Ansys, DyRoBeS etc.
Design & check and checking.Make to develop a kind of speed and reach the novel centrifugal compressor series of products one-tenth of 10000～50000rpm
For possible.
Novel centrifugal compressor is because it is energy-conservation, efficiency is high；Capacity is big；Compact conformation, size are little, and it is than identical capacity
Piston type or screw compressor much smaller；Do not pollute compressed gas；Rotating speed is high, and smooth running is reliable, continuous operation time
Long, a large amount of maintenance cost can be saved and reduce the advantages such as operator.Novel centrifugal compressor is widely used in refrigeration and heats
Engineering, chemical industry and petrochemical industry, field of dynamic engineering, such as decompressor: centrifugal compressor outlet variable compression gas feed is driven
Movable vane wheel rotates and drives electrical power generators, the kinetic energy of compressed gas becomes with potential energy electric energy, gas conveying and gas and separates
Field etc..
The working media in above-mentioned field have plenty of belong to inflammable and explosive medium, have for have virose medium or with
Time possess toxicity and inflammable and explosive dielectric property etc., in production when the leakage of compressed gas amount of centrifugal compressor exceed its regulation
Blast will occur during value or make toxic mediators and human contact cause occurring the occupation such as intoxication accident or chronic poisoning to be critically ill
Evil.The shaft end seal of compressor is had higher requirement by the highest rotating speed Novel centrifuge, common single labyrinth type axle
Little gas cannot be leaked by foot processing medium under high rotating speed occasion by envelope, Mechanical contacted seals, floating-ring seal etc.
Amount and processing medium do not allow by the technological requirement of lubricant pollution.
Utility model content
Technical problem to be solved in the utility model is: provide one can effectively prevent poisonous or inflammable and explosive medium from letting out
Dew is to air or the dry gas sealing device of bearing housing.
In order to solve above-mentioned technical problem, the technical solution adopted in the utility model is: provide a kind of dry gas sealing device,
Including the first labyrinth, one-level dry gas seals module, the second labyrinth, two grades of dry gas seals modules, leakage of compressed gas passage, sealings
Dry gas (treated compressed gas, pressure higher than leakage compressed gas), leakage compressed gas, isolating seal gas (every
From blanket gas bulk properties: 1 not pollutant atmosphere；2 is compatible mutually with compressed gas)；
Described internal labyrinth connects the first dry gas seals module, and described first dry gas seals module connects the second labyrinth, institute
Stating the second labyrinth and connect two grades of dry gas seals modules, described leakage of compressed gas passage runs through dry gas sealing device, described compression
Gas flows in leakage of compressed gas passage；
Described first labyrinth, the structure in the second labyrinth are the passage of throttle clearance and expansion chamber composition；
Described first dry gas seals module includes primary seal dry gas entrance, the outlet of primary seal dry gas, the first stationary ring,
One rotating ring, the first gap regulating spring, the first stationary ring bearing, the first rotating ring bearing；First is arranged on described first rotating ring bearing
Rotating ring, described first rotating ring is cylindrically shaped, and the outside of described first rotating ring arranges helicla flute, arranges inside described helicla flute
Reverse acting spiral groove, the axis of described first rotating ring is hinged on the first rotating ring bearing, and described first stationary ring bearing arranges first
Gap regulating spring, described first gap regulating spring connects the first stationary ring；Described first stationary ring and the first rotating ring connect；Described
Primary seal dry gas entrance is connected with leakage of compressed gas passage, described leakage of compressed gas passage and the first rotating ring and first quiet
The joint of ring is connected；Described sealing dry gas is flowed into by primary seal dry gas entrance under bleed pressure, for closure from first
The compressed gas leaked in labyrinth, fraction is then flowed out by the outlet of primary seal dry gas；
Described second dry gas seals module include the outlet of secondary seal dry gas entrance, secondary seal dry gas, the second stationary ring,
Two rotating rings, the second gap regulating spring, the second stationary ring bearing, the second rotating ring bearing；Second is arranged on described second rotating ring bearing
Rotating ring, described second rotating ring is cylindrically shaped, and the outside of described second rotating ring arranges helicla flute, arranges inside described helicla flute
Reverse acting spiral groove, the axis of described second rotating ring is hinged on the second rotating ring bearing, and described second stationary ring bearing arranges second
Gap regulating spring, described second gap regulating spring connects the second stationary ring；Described second stationary ring and the second rotating ring connect；Described
Secondary seal dry gas entrance is connected with leakage of compressed gas passage, described leakage of compressed gas passage and the second rotating ring and second quiet
The joint of ring is connected；Described sealing dry gas is flowed into by secondary seal dry gas entrance under bleed pressure, for closure from second
The compressed gas leaked in labyrinth, fraction is then flowed out by the outlet of secondary seal dry gas.
The beneficial effects of the utility model are: utilize principle of hydrodynamics, double by the tandem with double labyrinths
Gas dry gas seal, it is achieved the noncontact of seal face runs, runs owing to sealing noncontact, it is not necessary to any liquid comes
Lubrication and cooling, can effectively prevent poisonous or inflammable and explosive leakage of compressed gas to atmospheric side or bearing housing side；And seal mill
Wipe auxiliary material not limited by PV value, be suitable as the axle envelope of high rotating speed, high pressure equipment, and sealing power consumption only connects
About the 5-10% of touch mechanical seal.
Accompanying drawing explanation
Fig. 1 is the structure chart of a kind of dry gas sealing device；
Fig. 2 is a kind of first rotating ring or the top view of the second rotating ring；
Label declaration:
1, the first stationary ring；2, the first rotating ring；3, the second stationary ring；4, the second rotating ring；5, the first gap regulating spring；6, second
Gap regulating spring；7, the first stationary ring bearing；8, the first rotating ring bearing；9, the second stationary ring bearing；10, the second rotating ring bearing；11、
First labyrinth；12, the second labyrinth；13, helicla flute；14, reverse acting spiral groove.
Detailed description of the invention
By describing technology contents of the present utility model in detail, being realized purpose and effect, below in conjunction with embodiment and join
Conjunction accompanying drawing is explained.
The design of this utility model most critical is: by the double gas dry gas seal of tandem with double labyrinths,
The noncontact realizing seal face runs, it is not necessary to any liquid lubricates and cools down, and can effectively prevent poisonous or inflammable and explosive
Medium leaks in air or bearing housing.
Refer to Fig. 1 and Fig. 2, this utility model provides a kind of dry gas sealing device, does including the first labyrinth 11, one-level
Hermetic seal module, 12, two grades of the second labyrinth dry gas seals module, leakage of compressed gas passage, sealing dry gas (treated compression
Gas, pressure higher than leakage compressed gas), leakage compressed gas, isolating seal gas (isolating seal gas characteristic: 1 is not
Pollutant atmosphere；2 is compatible mutually with compressed gas).
Described internal labyrinth connects the first dry gas seals module, and described first dry gas seals module connects the second labyrinth, institute
Stating the second labyrinth and connect two grades of dry gas seals modules, described leakage of compressed gas passage runs through dry gas sealing device, described leakage
Compressed gas flow in leakage of compressed gas passage；
The structure in the 11, second labyrinth 12, described first labyrinth is the passage of throttle clearance and expansion chamber composition；
Described first dry gas seals module includes primary seal dry gas entrance, the outlet of primary seal dry gas, the first stationary ring 1,
First rotating ring the 2, first gap regulating spring the 5, first stationary ring bearing 7, the first rotating ring bearing 8；Set on described first rotating ring bearing 8
Putting the first rotating ring 2, described first rotating ring 2 is cylindrically shaped, and the outside of described first rotating ring 2 arranges helicla flute 13, described spiral shell
Arranging reverse acting spiral groove 14 inside spin slot, the axis of described first rotating ring 2 is hinged on the first rotating ring bearing 8, described first quiet
Arranging the first gap regulating spring 5 on ring bearing 7, described first gap regulating spring 5 connects the first stationary ring 1；Described first quiet
Ring 1 connects with the first rotating ring 2；Described primary seal dry gas entrance is connected with leakage of compressed gas passage, and described compressed gas is let out
The joint of leakage passage and the first rotating ring 2 and the first stationary ring 1 is connected；Described sealing dry gas is done by primary seal under bleed pressure
Gas entrance flows into, the compressed gas leaked from the first labyrinth for closure, and fraction is then flowed out by the outlet of primary seal dry gas；
Described second dry gas seals module include the outlet of secondary seal dry gas entrance, secondary seal dry gas, the second stationary ring 3,
Second rotating ring the 4, second gap regulating spring the 6, second stationary ring bearing the 9, second rotating ring bearing 10；On described second rotating ring bearing 10
Arranging the second rotating ring 4, described second rotating ring 4 is cylindrically shaped, and the outside of described second rotating ring 4 arranges helicla flute 13, described
Arranging reverse acting spiral groove 14 inside helicla flute, the axis of described second rotating ring 4 is hinged on the second rotating ring bearing 10, and described second
Arranging the second gap regulating spring 6 on stationary ring bearing 9, described second gap regulating spring 6 connects the second stationary ring 3；Described second
Stationary ring 3 connects with the second rotating ring 4；Described secondary seal dry gas entrance is connected with leakage of compressed gas passage, described compressed gas
The joint of leakage path and the second rotating ring 4 and the second stationary ring 3 is connected；Described sealing dry gas under bleed pressure by secondary seal
Dry gas entrance flows into, the compressed gas leaked from the second labyrinth for closure, and fraction is then by secondary seal dry gas outlet stream
Go out.
A kind of operation principle of dry gas sealing device:
When centrifugal compressor compressed gas is by internal labyrinth seal, compressed gas is through between multiple throttlings in the first labyrinth
The passage of gap and expansion chamber composition, produces energy loss through repeatedly throttling, and gas pressure greatly descends blood pressure lowering, makes gas be difficult to
Leakage, reaches the purpose of preliminary sealing.For shortening axial length dimension, labyrinth, inside is designed as diameter side by axial direction
To, expansion chamber volume differs, and expansion chamber volume in side is gradually increased from the inside to the outside；Primary seal gas enters one-level dry gas
Seal modules, for the compressed gas that leaks from the first labyrinth of closure, fraction then with the pressure from internal labyrinth seal leakage
Contracting gas is mixed into the dynamic and static ring in one-level dry gas seals module, owing to stationary ring is pushed away by the spiral fluted pressurization on rotating ring
Open stable gap, formed at the first seal modules stable, along with being sealed into atmospheric pressure fluctuation, slightly above compressed gas simultaneously
The seal pressure of body, prevents compressed gas to atmospheric side or the leakage of bearing housing side.Pole is leaked from one-level dry gas seals module
A few compressed gas part is discharged through the outlet of primary seal dry gas, and another part enters two grades of dry gas seals moulds through the second labyrinth
Block, the effect in middle labyrinth is identical with the effect in the first labyrinth, the effect of two grades of dry gas seals modules and principle and one-level dry gas
Seal modules is identical.The compression so leaked out with two grades of dry gas seals modules with the second labyrinth and one-level through the first labyrinth
Gas is few, and pressure is the lowest, and the separation gas road that this portion gas enters with isolating seal module goes out through secondary seal dry gas
Mouth is discharged.
Knowable to foregoing description, the beneficial effects of the utility model are: utilize principle of hydrodynamics, by with double
The double gas dry gas seal of the tandem in labyrinth, it is achieved the noncontact of seal face runs, runs, no owing to sealing noncontact
Need any liquid lubricate and cool down, can effectively prevent poisonous or inflammable and explosive leakage of compressed gas to atmospheric side or bearing
Case side；And sealing pair of friction components material is not limited by PV value, it is suitable as the axle envelope of high rotating speed, high pressure equipment, and seals
Power consumption is only about the 5-10% of contacting mechanical seal.
Further, dry gas sealing device also includes that isolating seal module, described isolating seal module include three grades of sealings
Dry gas entrance, three grades of sealing dry gas outlets, isolating seal gases, described isolating seal module connects two grades of dry gas seals modules；
Described three grades of sealing dry gas outlets are connected with the outlet of secondary seal dry gas；Under described isolating seal gas source pressure close by three grades
Envelope dry gas entrance flows into, and is sealed dry gas outlet by three grades and flows out.
Seen from the above description, isolating seal module is further ensured that compressed gas is entirely without leakage.
Further, the bleed pressure relatively compression pressure of described sealing dry gas exceeds 0.2-0.5MPa.
Seen from the above description, closed chamber is formed stable, along with being sealed into atmospheric pressure fluctuation, slightly above compressed gas
Seal pressure, prevent compressed gas to atmospheric side or the leakage of bearing housing side.
Further, described dry gas sealing device is applicable to the sealing of rotating speed 10000-50000rpm centrifugal compressor.
Seen from the above description, the noncontact of seal face runs and can make centrifugal compressor even running at high speed.
Further, the joint face of described first rotating ring and the first rotating ring bearing arranges O shape rubber seal, and described first
The joint face of stationary ring and the first stationary ring bearing arranges O shape rubber seal, described second rotating ring and the connection of the second rotating ring bearing
Face arranges O shape rubber seal, and the joint face of described second stationary ring and the second stationary ring bearing arranges O shape rubber seal.
Seen from the above description, O shape rubber seal effectively prevents the leakage of gas.
Embodiment 1
There is provided a kind of dry gas sealing device, including the first labyrinth 11, one-level dry gas seals module, 12, two grades of the second labyrinth
Dry gas seals module, leakage of compressed gas passage, sealing dry gas, the compressed gas of leakage.
Described internal labyrinth connects the first dry gas seals module, and described first dry gas seals module connects the second labyrinth, institute
Stating the second labyrinth and connect two grades of dry gas seals modules, described leakage of compressed gas passage runs through dry gas sealing device, described leakage
Compressed gas flow in leakage of compressed gas passage；
The structure in the 11, second labyrinth 12, described first labyrinth is the passage of throttle clearance and expansion chamber composition；
Described first dry gas seals module includes primary seal dry gas entrance, the outlet of primary seal dry gas, the first stationary ring 1,
First rotating ring the 2, first gap regulating spring the 5, first stationary ring bearing 7, the first rotating ring bearing 8；Set on described first rotating ring bearing 8
Putting the first rotating ring 2, described first rotating ring 2 is cylindrically shaped, and the outside of described first rotating ring 2 arranges helicla flute 13, described spiral shell
Arranging reverse acting spiral groove 14 inside spin slot, the axis of described first rotating ring 2 is hinged on the first rotating ring bearing 8, described first quiet
Arranging the first gap regulating spring 5 on ring bearing 7, described first gap regulating spring 5 connects the first stationary ring 1；Described first quiet
Ring 1 connects with the first rotating ring 2；Described primary seal dry gas entrance is connected with leakage of compressed gas passage, and described compressed gas is let out
The joint of leakage passage and the first rotating ring 2 and the first stationary ring 1 is connected；Described sealing dry gas is done by primary seal under bleed pressure
Gas entrance flows into, the compressed gas leaked from the first labyrinth for closure, and fraction is then flowed out by the outlet of primary seal dry gas；
Described second dry gas seals module include the outlet of secondary seal dry gas entrance, secondary seal dry gas, the second stationary ring 3,
Second rotating ring the 4, second gap regulating spring the 6, second stationary ring bearing the 9, second rotating ring bearing 10；On described second rotating ring bearing 10
Arranging the second rotating ring 4, described second rotating ring 4 is cylindrically shaped, and the outside of described second rotating ring 4 arranges helicla flute 13, described
Arranging reverse acting spiral groove 14 inside helicla flute, the axis of described second rotating ring 4 is hinged on the second rotating ring bearing 10, and described second
Arranging the second gap regulating spring 6 on stationary ring bearing 9, described second gap regulating spring 6 connects the second stationary ring 3；Described second
Stationary ring 3 connects with the second rotating ring 4；Described secondary seal dry gas entrance is connected with leakage of compressed gas passage, described compressed gas
The joint of leakage path and the second rotating ring 4 and the second stationary ring 3 is connected；Described sealing dry gas under bleed pressure by secondary seal
Dry gas entrance flows into, the compressed gas leaked from the second labyrinth for closure, and fraction is then by secondary seal dry gas outlet stream
Go out.
Dry gas sealing device also include isolating seal module, described isolating seal module include three grades seal dry gas entrances,
Three grades seal dry gas outlet, isolating seal gas, and described isolating seal module connects two grades of dry gas seals modules；Described three grades close
Envelope dry gas outlet is connected with the outlet of secondary seal dry gas；Dry gas entrance is sealed by three grades under described isolating seal gas source pressure
Flow into, sealed dry gas outlet by three grades and flow out.
The bleed pressure relatively compression pressure of described sealing dry gas exceeds 0.2MPa.
Described dry gas sealing device is applicable to rotating speed 10000-50000rpm centrifugal compressor, the sealing of decompressor.
The joint face of described first rotating ring 2 and the first rotating ring bearing 8 arranges O shape rubber seal, described first stationary ring 1 with
The joint face of the first stationary ring bearing 7 arranges O shape rubber seal, described second rotating ring 4 and the joint face of the second rotating ring bearing 10
Arranging O shape rubber seal, the joint face of described second stationary ring 3 and the second stationary ring bearing 9 arranges O shape rubber seal.
Embodiment 2
Repeating embodiment 1, the bleed pressure relatively compression pressure of the most described sealing dry gas exceeds 0.5MPa.
In sum, this utility model provide a kind of dry gas sealing device, utilize principle of hydrodynamics, by with
The double gas dry gas seal of the tandem in double labyrinths, it is achieved the noncontact of seal face runs, runs owing to sealing noncontact,
Need not any liquid lubricate and cool down, can effectively prevent poisonous or inflammable and explosive leakage of compressed gas to atmospheric side or axle
Hold case side；And sealing pair of friction components material is not limited by PV value, it is suitable as the axle envelope of high rotating speed, high pressure equipment, and close
Envelope power consumption is only about the 5-10% of contacting mechanical seal；Isolating seal module be further ensured that compressed gas entirely without
Leakage；Closed chamber formed stable, along with being sealed into seal pressure atmospheric pressure fluctuation, slightly above compressed gas, prevent
Compressed gas is to atmospheric side or the leakage of bearing housing side；The noncontact of seal face runs can make centrifugal compressor at high speed
Even running；O shape rubber seal effectively prevents the leakage of gas.
The foregoing is only embodiment of the present utility model, not thereby limit the scope of the claims of the present utility model, every
Utilize the equivalents that this utility model description and accompanying drawing content are made, or be directly or indirectly used in relevant technology neck
Territory, is the most in like manner included in scope of patent protection of the present utility model.
Claims (5)
1. a dry gas sealing device, it is characterised in that: include the first labyrinth, one-level dry gas seals module, the second labyrinth, two grades
Dry gas seals module, leakage of compressed gas passage, sealing dry gas, the compressed gas of leakage；
Described internal labyrinth connects the first dry gas seals module, and described first dry gas seals module connects the second labyrinth, and described the
Two labyrinths connect two grades of dry gas seals modules, and described leakage of compressed gas passage runs through dry gas sealing device, described compressed gas
Leakage of compressed gas passage flows；
Described first labyrinth, the structure in the second labyrinth are the passage of throttle clearance and expansion chamber composition；
Described first dry gas seals module includes primary seal dry gas entrance, the outlet of primary seal dry gas, the first stationary ring, first moves
Ring, the first gap regulating spring, the first stationary ring bearing, the first rotating ring bearing；On described first rotating ring bearing, the first rotating ring is set,
Described first rotating ring is cylindrically shaped, and the outside of described first rotating ring arranges helicla flute, arranges reversely inside described helicla flute
Helicla flute, the axis of described first rotating ring is hinged on the first rotating ring bearing, and described first stationary ring bearing arranges the first gap
Regulation spring, described first gap regulating spring connects the first stationary ring；Described first stationary ring and the first rotating ring connect；Described one-level
Seal dry gas entrance to be connected with leakage of compressed gas passage, described leakage of compressed gas passage and the first rotating ring and the first stationary ring
Joint is connected；Described sealing dry gas is flowed into by primary seal dry gas entrance under bleed pressure, primary seal dry gas export
Flow out；
Described second dry gas seals module include the outlet of secondary seal dry gas entrance, secondary seal dry gas, the second stationary ring, second move
Ring, the second gap regulating spring, the second stationary ring bearing, the second rotating ring bearing；On described second rotating ring bearing, the second rotating ring is set,
Described second rotating ring is cylindrically shaped, and the outside of described second rotating ring arranges helicla flute, arranges reversely inside described helicla flute
Helicla flute, the axis of described second rotating ring is hinged on the second rotating ring bearing, and described second stationary ring bearing arranges the second gap
Regulation spring, described second gap regulating spring connects the second stationary ring；Described second stationary ring and the second rotating ring connect；Described two grades
Seal dry gas entrance to be connected with leakage of compressed gas passage, described leakage of compressed gas passage and the second rotating ring and the second stationary ring
Joint is connected；Described sealing dry gas is flowed into by secondary seal dry gas entrance under bleed pressure, secondary seal dry gas export
Flow out.
Dry gas sealing device the most according to claim 1, it is characterised in that: also include isolating seal module, described isolation
Seal modules includes that three grades seal dry gas entrance, three grades of sealing dry gas outlets, isolating seal gases, and described isolating seal module is even
Connect two grades of dry gas seals modules；Described three grades of sealing dry gas outlets are connected with the outlet of secondary seal dry gas；Described isolating seal gas
Sealed dry gas entrance by three grades under body bleed pressure to flow into, sealed dry gas outlet by three grades and flow out.
Dry gas sealing device the most according to claim 1 and 2, it is characterised in that: the bleed pressure of described sealing dry gas is relatively
Compression pressure exceeds 0.2-0.5MPa.
Dry gas sealing device the most according to claim 1, it is characterised in that: described dry gas sealing device is applicable to rotating speed
The sealing of 10000-50000rpm centrifugal compressor.
Dry gas sealing device the most according to claim 1, it is characterised in that: described first rotating ring and the first rotating ring bearing
Joint face arranges O shape rubber seal, and the joint face of described first stationary ring and the first stationary ring bearing arranges O shape rubber seal,
The joint face of described second rotating ring and the second rotating ring bearing arranges O shape rubber seal, and described second stationary ring and the second stationary ring prop up
The joint face of seat arranges O shape rubber seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620758575.4U CN205841769U (en) | 2016-07-19 | 2016-07-19 | A kind of dry gas sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620758575.4U CN205841769U (en) | 2016-07-19 | 2016-07-19 | A kind of dry gas sealing device |
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| Publication Number | Publication Date |
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| CN205841769U true CN205841769U (en) | 2016-12-28 |
Family
ID=57624252
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201620758575.4U Active CN205841769U (en) | 2016-07-19 | 2016-07-19 | A kind of dry gas sealing device |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106678371A (en) * | 2017-03-03 | 2017-05-17 | 四川日机密封件股份有限公司 | Dry gas sealing device of long-distance pipeline natural gas compressor |
| CN107620614A (en) * | 2017-10-10 | 2018-01-23 | 华能国际电力股份有限公司 | A kind of HTHP supercritical fluid shaft end cooling system |
| CN107630931A (en) * | 2017-11-01 | 2018-01-26 | 大连西力博机电设备科技有限公司 | The air seal of tailing wheel of bucket elevator drive bearing and dust leakage detection means |
| CN109185461A (en) * | 2018-10-26 | 2019-01-11 | 清华大学 | The seal face structure of rotating machinery |
| CN110440001A (en) * | 2019-08-29 | 2019-11-12 | 浙江工业大学 | A kind of stationary ring replaceable mechanically-sealing apparatus |
| CN111577400A (en) * | 2020-04-29 | 2020-08-25 | 中国核动力研究设计院 | Supercritical carbon dioxide turbine shaft end sealing method and device adopting dry gas coupling labyrinth sealing |
| CN112403690A (en) * | 2019-08-22 | 2021-02-26 | 晨光生物科技集团股份有限公司 | Explosion-proof horizontal centrifuge |
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2016
- 2016-07-19 CN CN201620758575.4U patent/CN205841769U/en active Active
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106678371A (en) * | 2017-03-03 | 2017-05-17 | 四川日机密封件股份有限公司 | Dry gas sealing device of long-distance pipeline natural gas compressor |
| CN107620614A (en) * | 2017-10-10 | 2018-01-23 | 华能国际电力股份有限公司 | A kind of HTHP supercritical fluid shaft end cooling system |
| CN107620614B (en) * | 2017-10-10 | 2023-04-21 | 华能国际电力股份有限公司 | High-temperature high-pressure supercritical fluid shaft end cooling system |
| CN107630931A (en) * | 2017-11-01 | 2018-01-26 | 大连西力博机电设备科技有限公司 | The air seal of tailing wheel of bucket elevator drive bearing and dust leakage detection means |
| CN107630931B (en) * | 2017-11-01 | 2023-10-27 | 大连广的科技有限公司 | Tail wheel transmission bearing device of bucket elevator |
| CN109185461A (en) * | 2018-10-26 | 2019-01-11 | 清华大学 | The seal face structure of rotating machinery |
| CN112403690A (en) * | 2019-08-22 | 2021-02-26 | 晨光生物科技集团股份有限公司 | Explosion-proof horizontal centrifuge |
| CN110440001A (en) * | 2019-08-29 | 2019-11-12 | 浙江工业大学 | A kind of stationary ring replaceable mechanically-sealing apparatus |
| CN111577400A (en) * | 2020-04-29 | 2020-08-25 | 中国核动力研究设计院 | Supercritical carbon dioxide turbine shaft end sealing method and device adopting dry gas coupling labyrinth sealing |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |