CN106593547A - Sealing system of turbo expander - Google Patents
Sealing system of turbo expander Download PDFInfo
- Publication number
- CN106593547A CN106593547A CN201611225257.2A CN201611225257A CN106593547A CN 106593547 A CN106593547 A CN 106593547A CN 201611225257 A CN201611225257 A CN 201611225257A CN 106593547 A CN106593547 A CN 106593547A
- Authority
- CN
- China
- Prior art keywords
- sealer
- pressure
- end sealer
- sealing system
- pipeline
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D11/00—Preventing or minimising internal leakage of working-fluid, e.g. between stages
- F01D11/02—Preventing or minimising internal leakage of working-fluid, e.g. between stages by non-contact sealings, e.g. of labyrinth type
- F01D11/04—Preventing or minimising internal leakage of working-fluid, e.g. between stages by non-contact sealings, e.g. of labyrinth type using sealing fluid, e.g. steam
- F01D11/06—Control thereof
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/16—Arrangement of bearings; Supporting or mounting bearings in casings
Abstract
The invention discloses a sealing system of a turbo expander. The sealing system comprises an inner bearing on the side of the turbo expander, and an outer bearing on the side of a supercharger; an expansion end sealer and a supercharging end sealer which can supply dry sealer bodies to a shaft seal are arranged on the outer side of the inner bearing and the outer side of the outer bearing respectively; the expansion end sealer and the supercharging end sealer are connected with an instrument gas header pipe through respective sealer pipelines in parallel; a check valve preventing gas backflow and a precision reducing valve are connected with the sealer pipeline connected with the expansion end sealer in series; a check valve preventing gas backflow and a pipeline stop valve are connected with the sealer pipeline connected with the supercharging end sealer in series; and a header pipe stop valve is connected the instrument gas header pipe in series. The sealing system has the characteristics that the structural composition is reasonable, the use is convenient and reliable, and a mechanical device and an instrument jointly act to reach better sealing effect.
Description
Technical field
The present invention relates to a kind of sealing system of turbo-expander, belongs to the technical field of sealing technology of turbo-expander.
Background technology
Turbo-expander mainly provides cold for whole device, carries out and maintain the separation and liquefaction of gas, expands
What machine was conventional is all-in-one-piece slip oil bearing, has lubricating oil, and the impeller wheel back of the body has cold, how to allow anti-in expansion cabinet bulk
It is an important problem that only the two is ganged up.
The content of the invention
It is an object of the invention to overcome the shortcomings of that prior art is present, and provide a kind of structure composition rationally, user
Just it is reliable, by machinery and instrument collective effect reaching the sealing system of the turbo-expander of preferable sealing effectiveness.
The purpose of the present invention by following technical solution completing, a kind of sealing system of turbo-expander, it wraps
The respective outside of the inner bearing for including expander side and the outer bearing for being pressurized pusher side, the inner bearing and outer bearing is respectively arranged with can
The expanding end sealer and pressurized end sealer, described expanding end sealer and supercharging for being dried sealing body is passed through in axle envelope
End sealer is connected to instrument supply gas house steward by respective sealer pipeline respectively.
As preferred：A non-return for preventing gas backflow is serially connected with the sealer pipeline of the expanding end sealer connection
Valve and a precise pressure-reducing valve；And being also serially connected with one in the sealer pipeline of the pressurized end sealer connection prevents gas backflow
Check-valves and a pipeline stop valve；House steward's stop valve is serially connected with instrument supply gas house steward separately.
As preferred：A connection active wheel back gap is connected on the outside of the expanding end sealer and gap pressure is obtained
The pressure-measuring pipe of power, the pressure-measuring pipe are connected to the external pressure measurement control terminal that can compare to pressure data, and the pressure measurement is controlled
Terminal is also connected with the precise pressure-reducing valve for controlling and adjusting pressure value.
The present invention has structure composition rationally, easy to use and reliable, by machinery and instrument collective effect with reach compared with
The features such as good sealing effectiveness.
Description of the drawings
Fig. 1 is the system theory of constitution figure of the present invention.
Specific embodiment
Below in conjunction with accompanying drawing, the present invention will be described in detail：Shown in Fig. 1, a kind of turbo-expander of the present invention
Sealing system, it includes the outer bearing 2 of the inner bearing 1 of expander side and supercharging pusher side, the inner bearing 1 and outer bearing 2
Each outside is respectively arranged with and the expanding end sealer 3 and pressurized end sealer 4 that are dried sealing body, institute can be passed through in axle envelope
The expanding end sealer 3 stated and pressurized end sealer 4 are connected to instrument supply gas house steward 6 by respective sealer pipeline 5 respectively.
Shown in figure, being serially connected with one in the sealer pipeline 5 of the connection of expanding end sealer 3 prevents the swollen of gas backflow
Swollen end check-valves 7 and a precise pressure-reducing valve 8；And be also serially connected with one in the sealer pipeline 5 of the connection of pressurized end sealer 4 and prevent
Only the pressurized end check-valves 9 of gas backflow and a pipeline stop valve 10；It is another that house steward cut-off is serially connected with instrument supply gas house steward 6
Valve 11.
The outside of expanding end sealer of the present invention 3 is connected to a connection active wheel back gap and obtains clearance pressure
Pressure-measuring pipe 12, the pressure-measuring pipe 12 is connected to the external pressure measurement control terminal 13 that can compare to pressure data, the pressure measurement
Control terminal 13 is connected to the precise pressure-reducing valve 8 for controlling and adjusting pressure value.
It is of the invention mainly to adopt mechanically-sealing apparatus and instrument air collective effect, reach the effect of sealing.Axle envelope is let out
Leakage is the upper function with downstream pressure, gap width and axle envelope length of axle envelope, and axle envelope upstream pressure depends on clearance pressure.Cause
This, is preferably to control the leakage of gas and prevent lubricating oil from penetrating in working media, it is necessary to drying is passed through in axle envelope close
Envelope gas, its pressure will be controlled according to the pressure size of clearance pressure, i.e. active wheel back of the body gas.By described precision decompression
Valve, the difference that blanket gass pressure and clearance pressure are controlled during adjustment are a smaller value, to prevent gas leakage, and be unlikely to seal
The heat of gas itself brings turbo-expander into.
Claims (3)
1. a kind of sealing system of turbo-expander, it includes the outer bearing of the inner bearing of expander side and supercharging pusher side, and which is special
Levy is that the respective outside of the inner bearing and outer bearing is respectively arranged with the expansion for being dried sealing body can be passed through in axle envelope
End sealer and pressurized end sealer, described expanding end sealer and pressurized end sealer pass through respective sealer pipe respectively
Road is connected to instrument supply gas house steward.
2. the sealing system of turbo-expander according to claim 1, it is characterised in that the expanding end sealer connection
Sealer pipeline in be serially connected with the check-valves for preventing gas backflow and a precise pressure-reducing valve；And the pressurized end sealer connects
Also the check-valves for preventing gas backflow and a pipeline stop valve are serially connected with the sealer pipeline for connecing；Separately in instrument supply gas house steward
On be serially connected with house steward's stop valve.
3. the sealing system of turbo-expander according to claim 2, it is characterised in that the expanding end sealer it is outer
Side is connected to a connection active wheel back gap and obtains the pressure-measuring pipe of clearance pressure, the pressure-measuring pipe be connected to it is external can be to pressure
The pressure measurement control terminal that force data is compared, the pressure measurement control terminal are also connected with the accurate decompression for controlling and adjusting pressure value
Valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611225257.2A CN106593547A (en) | 2016-12-27 | 2016-12-27 | Sealing system of turbo expander |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611225257.2A CN106593547A (en) | 2016-12-27 | 2016-12-27 | Sealing system of turbo expander |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106593547A true CN106593547A (en) | 2017-04-26 |
Family
ID=58604363
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611225257.2A Pending CN106593547A (en) | 2016-12-27 | 2016-12-27 | Sealing system of turbo expander |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106593547A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110005477A (en) * | 2019-06-06 | 2019-07-12 | 康跃科技股份有限公司 | A kind of two-stage turbocharger hydrnstaticiaxis seal structure |
| CN111502776A (en) * | 2020-04-28 | 2020-08-07 | 西安陕鼓动力股份有限公司 | Nitrogen sealing system and method for turboexpander with stator blade adjusting cavity seal |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5793608A (en) * | 1980-12-01 | 1982-06-10 | Toshiba Corp | Device for sealing up shaft of geothermal turbine |
| CN202250867U (en) * | 2011-09-28 | 2012-05-30 | 上海齐耀螺杆机械有限公司 | Shaft seal device of high-pressure screw compressor |
| CN204041129U (en) * | 2014-08-08 | 2014-12-24 | 中国科学院工程热物理研究所 | Determine expansion ratio rock gas radial-inward-flow turbine expansion power generation unit |
| CN204963421U (en) * | 2015-09-21 | 2016-01-13 | 陕西煤化能源有限公司 | Carry air separation device of sealing gas body |
| CN105952681A (en) * | 2016-04-29 | 2016-09-21 | 沈阳透平机械股份有限公司 | Balance gas cavity type shaft end sealing mechanism and sealing gas adjustment device of compressor |
| CN106044070A (en) * | 2016-08-12 | 2016-10-26 | 成都三可实业有限公司 | Sugar tablet conveying device |
| CN106081494A (en) * | 2016-08-12 | 2016-11-09 | 成都三可实业有限公司 | A kind of sugar-tablet coolconveyer |
| CN106089435A (en) * | 2016-07-28 | 2016-11-09 | 中国核动力研究设计院 | A kind of compressor system with supercritical carbon dioxide as working medium |
| CN106081543A (en) * | 2016-08-12 | 2016-11-09 | 成都三可实业有限公司 | A kind of roll shaft mechanism of rapid belt |
| CN106196679A (en) * | 2016-08-12 | 2016-12-07 | 成都三可实业有限公司 | A kind of refrigeration system of sugar-tablet coolconveyer |
-
2016
- 2016-12-27 CN CN201611225257.2A patent/CN106593547A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5793608A (en) * | 1980-12-01 | 1982-06-10 | Toshiba Corp | Device for sealing up shaft of geothermal turbine |
| CN202250867U (en) * | 2011-09-28 | 2012-05-30 | 上海齐耀螺杆机械有限公司 | Shaft seal device of high-pressure screw compressor |
| CN204041129U (en) * | 2014-08-08 | 2014-12-24 | 中国科学院工程热物理研究所 | Determine expansion ratio rock gas radial-inward-flow turbine expansion power generation unit |
| CN204963421U (en) * | 2015-09-21 | 2016-01-13 | 陕西煤化能源有限公司 | Carry air separation device of sealing gas body |
| CN105952681A (en) * | 2016-04-29 | 2016-09-21 | 沈阳透平机械股份有限公司 | Balance gas cavity type shaft end sealing mechanism and sealing gas adjustment device of compressor |
| CN106089435A (en) * | 2016-07-28 | 2016-11-09 | 中国核动力研究设计院 | A kind of compressor system with supercritical carbon dioxide as working medium |
| CN106044070A (en) * | 2016-08-12 | 2016-10-26 | 成都三可实业有限公司 | Sugar tablet conveying device |
| CN106081494A (en) * | 2016-08-12 | 2016-11-09 | 成都三可实业有限公司 | A kind of sugar-tablet coolconveyer |
| CN106081543A (en) * | 2016-08-12 | 2016-11-09 | 成都三可实业有限公司 | A kind of roll shaft mechanism of rapid belt |
| CN106196679A (en) * | 2016-08-12 | 2016-12-07 | 成都三可实业有限公司 | A kind of refrigeration system of sugar-tablet coolconveyer |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110005477A (en) * | 2019-06-06 | 2019-07-12 | 康跃科技股份有限公司 | A kind of two-stage turbocharger hydrnstaticiaxis seal structure |
| CN111502776A (en) * | 2020-04-28 | 2020-08-07 | 西安陕鼓动力股份有限公司 | Nitrogen sealing system and method for turboexpander with stator blade adjusting cavity seal |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170426 |