CN201246190Y - Gas bearing supercharging turboexpander - Google Patents
Gas bearing supercharging turboexpander Download PDFInfo
- Publication number
- CN201246190Y CN201246190Y CNU2008200385818U CN200820038581U CN201246190Y CN 201246190 Y CN201246190 Y CN 201246190Y CN U2008200385818 U CNU2008200385818 U CN U2008200385818U CN 200820038581 U CN200820038581 U CN 200820038581U CN 201246190 Y CN201246190 Y CN 201246190Y
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- Prior art keywords
- booster
- gas bearing
- bearing
- expansion
- middle casing
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Abstract
The utility model provides a gas-bearing booster expansion turbine, which comprises a middle casing, a turbine spiral casing is mounted at the left end of the middle casing, a volute of booster is mounted at the right end of the middle casing, a rotor is rotatablely arranged in the middle casing, an expansion wheel and an impeller of booster are respectively arranged at the two ends of the rotor, and two gas bearings are sleeved on the rotor for supporting the expansion wheel and the impeller of booster. The utility model has the advantages of simple structure, low shaft dissipation, low cost, good safety performance, less oil steam discharge in the oil bearing expansion machine and less pollution for the environment. The advantages of the expansion machine lay a landmark foundation for the development of the booster expansion turbine.
Description
Technical field
The utility model relates to a kind of booster expansion turbine, especially a kind of booster expansion turbine of using gases bearing.
Background technique
Booster expansion turbine is that air separation equipment and rock gas petroleum gas liquefaction separation equipment and low temperature breaking equipment etc. obtain the necessary crucial portion of cold machine, is the heart that guarantees complete equipment stable operation.Its cardinal principle is to utilize the gas that certain pressure is arranged to carry out adiabatic expansion externally acting and the interior energy of spent gas itself in turbo-expander, thereby gas self is cooled off consumingly and reaches the purpose of refrigeration.The energy of turbo-expander output is reclaimed or braking blower consumption by coaxial compressor.
Booster expansion turbine comprises a middle casing, the left end of middle casing is installed the turbine spiral case, right-hand member is equipped with volute of booster, be provided with rotor in the middle casing, in turbine spiral case and volute of booster, be provided with expansion wheel and impeller of booster respectively at the two ends of rotor.Present booster expansion turbine is used to support the general employing oil bearing of expansion wheel and impeller of booster, and this structure can be brought a lot of inconvenience.Because the working medium of oil bearing is a lubricant oil, and lubricant oil might leak from the outlet port of inflating end in the working procedure of decompressor, this moment, lubricant oil just contacted with air, and the danger of burning just might be arranged; In addition, owing to need provide lubricant oil to oil bearing, so generally also need to increase a cover oil supply system in the work system of decompressor, this will increase the cost of a whole set of expander system and the complexity of structure.
The model utility content
The purpose of this utility model is to solve above-mentioned technical problem, provides that a kind of Safety performance is good, cost is low, simple in structure, gas bearing booster expansion turbine that energy consumption is less.
The purpose of this utility model is achieved through the following technical solutions:
A kind of gas bearing booster expansion turbine, comprise a middle casing, the left end of described middle casing is installed the turbine spiral case, right-hand member is equipped with volute of booster, be provided with rotor in the described middle casing rotationally, two ends at described rotor are provided with expansion wheel and impeller of booster respectively in turbine spiral case and volute of booster, be arranged with left gas bearing and right gas bearing on described rotor, described left gas bearing is used for supporting expansion wheel, and described right gas bearing is used for supporting impeller of booster.
Be provided with the bearing stop collar between described left gas bearing and the right gas bearing, described bearing stop collar is set in outside the rotor and with middle casing and cooperates.
Be provided with stuffing box gland between described left gas bearing and the expansion wheel.Be provided with collet and spacing sealing plate between described right gas bearing and the impeller of booster.
The beneficial effects of the utility model are mainly reflected in: simple in structure, the axle loss is little, and the energy utilization is thorough, and price has only about the 1/6-1/8 of same parameter oil bearing decompressor; Safety performance is good, does not have the danger of burning; And can reduce the discharging of oily vapour in the oil bearing decompressor, reduced pollution to environment.
Description of drawings
Below in conjunction with accompanying drawing technical solutions of the utility model are described further:
Fig. 1: the schematic representation of the utility model gas bearing booster expansion turbine.
Wherein:
1 turbine spiral case, 2 middle casings, 3 volute of booster
4 expansion wheel, 5 stuffing box glands, 6 left gas bearing
7 bearing stop collars, 8 rotors, 9 right gas bearing
10 collets, 11 spacing sealing plate 12 impeller of boosters
Embodiment
As shown in Figure 1, the utility model has disclosed a kind of gas bearing booster expansion turbine, the same with prior art, comprise a middle casing 2, the left end of described middle casing 2 is installed turbine spiral case 1, right-hand member is equipped with volute of booster 3, be provided with rotor 8 rotationally in the described middle casing 2, in turbine spiral case 1 and volute of booster 3, be provided with expansion wheel 4 and impeller of booster 12 respectively at the two ends of described rotor 8.Be that with the prior art difference be arranged with left gas bearing 6 and right gas bearing 9 on described rotor 8, described left gas bearing 6 is used for supporting expansion wheel 4, described right gas bearing 9 is used for supporting impeller of booster 12.
Because the oiling agent of gas bearing is an air, so do not worry the problem that whether can burn.In addition, gas bearing also has following characteristics.1. frictional resistance is extremely low: because gas viscosity is more much lower than liquid, at room temperature air viscosity only is five a thousandths of No. 10 machinery oil, and the frictional resistance of bearing is directly proportional with viscosity, so the frictional ratio fluid lubricated bearing of gas bearing is low.2. it is big to be suitable for velocity range: the frictional resistance of gas bearing is low, and temperature rise is low.3. the Applicable temperature scope is wide: gas can keep gaseous state in the temperature range greatly, and its viscosity temperature influence is very little.Therefore behind the using gases bearing, it is more thorough that energy can utilize.
When booster expansion turbine moves, the high pressure-temperature gas that is easy to take place the impeller of booster back of the body flows to the bearing place along main shaft, thereby make the bearing expanded by heating, the end clearance of itself and main shaft is diminished, seize or stuck phenomenon take place, the utility model is provided with bearing stop collar 7 between left gas bearing 6 and right gas bearing 9, it is outer and fixing with middle casing 2 that described bearing stop collar 7 is set in rotor 8.Such design has improved the bearing capacity of bearing, and it can force the expansion that suppresses bearing face, to guarantee the fit up gap.
Be provided with stuffing box gland 5 between described left gas bearing 6 and the expansion wheel 4, be provided with collet 10 and spacing sealing plate 11 between described right gas bearing 9 and the impeller of booster 12.Like this, make the outer leakage quantity of gas be controlled in the minimum scope, in stuffing box gland 5 and spacing sealing plate 11, also can charge into normal temperature blanket gas (dry air or nitrogen) and leak with the flow through cryogenic gas of decompressor of prevention.As shown in the figure, on middle casing 2, also be provided with two bearing gas input ends, be respectively left and right gas bearing air feed, and do not need also need provide an oil supply system, so of the present utility model simple in structure, with low cost as prior art; And improved the stability of decompressor operation, balance the axial force of rotor.
The utility model still has multiple concrete mode of execution, and all employings are equal to replacement or equivalent transformation and all technological schemes of forming, all drop within the claimed scope of the utility model.
Claims (4)
1. gas bearing booster expansion turbine, comprise a middle casing (2), the left end of described middle casing (2) is installed turbine spiral case (1), right-hand member is equipped with volute of booster (3), be provided with rotor (8) in the described middle casing (2) rotationally, two ends at described rotor (8) are provided with expansion wheel (4) and impeller of booster (12) respectively in turbine spiral case (1) and volute of booster (3), it is characterized in that: on described rotor (8), be arranged with left gas bearing (6) and right gas bearing (9), described left gas bearing (6) is used for supporting expansion wheel (4), and described right gas bearing (9) is used for supporting impeller of booster (12).
2. gas bearing booster expansion turbine according to claim 1, it is characterized in that: be provided with bearing stop collar (7) between described left gas bearing (6) and the right gas bearing (9), described bearing stop collar (7) is set in outside the rotor (8) and with middle casing (2) and cooperates.
3. gas bearing booster expansion turbine according to claim 2 is characterized in that: be provided with stuffing box gland (5) between described left gas bearing (6) and the expansion wheel (4).
4. gas bearing booster expansion turbine according to claim 2 is characterized in that: be provided with collet (10) and spacing sealing plate (11) between described right gas bearing (9) and the impeller of booster (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200385818U CN201246190Y (en) | 2008-08-14 | 2008-08-14 | Gas bearing supercharging turboexpander |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200385818U CN201246190Y (en) | 2008-08-14 | 2008-08-14 | Gas bearing supercharging turboexpander |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201246190Y true CN201246190Y (en) | 2009-05-27 |
Family
ID=40730010
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200385818U Expired - Lifetime CN201246190Y (en) | 2008-08-14 | 2008-08-14 | Gas bearing supercharging turboexpander |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201246190Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102003221A (en) * | 2010-11-16 | 2011-04-06 | 苏州制氧机有限责任公司 | After-boosted turbo expander for gas bearing |
| CN102061946A (en) * | 2010-11-16 | 2011-05-18 | 苏州制氧机有限责任公司 | Boosting turbo expander |
| CN104136767A (en) * | 2011-10-19 | 2014-11-05 | 克里奥斯塔股份有限公司 | Cryogenic liquid expansion turbine |
| CN105241179A (en) * | 2015-09-28 | 2016-01-13 | 苏州制氧机股份有限公司 | Oil bearing expansion machine capable of monitoring oil leakage |
| CN107489466A (en) * | 2017-09-30 | 2017-12-19 | 苏州制氧机股份有限公司 | Supercharging adjustable nozzle gas-bearing expansion turbine after efficiently |
-
2008
- 2008-08-14 CN CNU2008200385818U patent/CN201246190Y/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102003221A (en) * | 2010-11-16 | 2011-04-06 | 苏州制氧机有限责任公司 | After-boosted turbo expander for gas bearing |
| CN102061946A (en) * | 2010-11-16 | 2011-05-18 | 苏州制氧机有限责任公司 | Boosting turbo expander |
| CN104136767A (en) * | 2011-10-19 | 2014-11-05 | 克里奥斯塔股份有限公司 | Cryogenic liquid expansion turbine |
| CN104136767B (en) * | 2011-10-19 | 2018-11-06 | 克里奥斯塔股份有限公司 | Cryogenic liquid expansion turbine |
| CN105241179A (en) * | 2015-09-28 | 2016-01-13 | 苏州制氧机股份有限公司 | Oil bearing expansion machine capable of monitoring oil leakage |
| CN107489466A (en) * | 2017-09-30 | 2017-12-19 | 苏州制氧机股份有限公司 | Supercharging adjustable nozzle gas-bearing expansion turbine after efficiently |
| CN107489466B (en) * | 2017-09-30 | 2023-09-19 | 苏州制氧机股份有限公司 | High-efficiency rear-supercharging adjustable nozzle gas bearing turbine expander |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Wuzhong District Mudu town Suzhou city Jiangsu province 215101 Spring Road No. 31 Patentee after: SUZHOU OXYGEN PLANT CO., LTD. Address before: Wuzhong District Mudu town Suzhou city Jiangsu province 215101 Spring Road No. 31 Patentee before: Suzhou Oxygen Plant Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090527 |