CN205840927U - A kind of turbine power generation unit with supercritical carbon dioxide as working medium - Google Patents
A kind of turbine power generation unit with supercritical carbon dioxide as working medium Download PDFInfo
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- CN205840927U CN205840927U CN201620803188.8U CN201620803188U CN205840927U CN 205840927 U CN205840927 U CN 205840927U CN 201620803188 U CN201620803188 U CN 201620803188U CN 205840927 U CN205840927 U CN 205840927U
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Abstract
The utility model discloses a kind of turbine power generation unit with supercritical carbon dioxide as working medium, this unit is mainly made up of turbo-expander and high-speed engine, turbo-expander is connected by same axle with high-speed engine, there is during operation identical rotating speed, and be sealed in the pressure shell being made up of high pressure and low pressure border, it is achieved that externally zero leakage.Turbo-expander part is mainly made up of core components such as high pressure shell, turbo-expander impeller, tooth sealing, gas injection pipeline, dry gas seals.High-speed engine part is mainly made up of core components such as left radial bearing, high-speed engine, cod, right radial bearing, low pressure shell, suction pumps.Turbo-expander part is connected by tooth sealing and dry gas seals with high-speed engine part.The turbine power generation unit that the utility model proposes has the advantages such as simple in construction, volume be little, high efficiency, zero leakage, is suitable as the turbine power generation unit of supercritical carbon dioxide electricity generation system.
Description
Technical field
This utility model relates to a kind of turbomachine and generating equipment, is specifically related to a kind of with supercritical carbon dioxide as work
The turbine power generation unit of matter.
Background technology
Supercritical carbon dioxide generation technology is to substitute conventional vapor generation technology, it is achieved utilization of energy is to more efficient and low
The important directions of cost development.Supercritical carbon dioxide electricity generation system mainly includes compressor, heat resource equipment or heat exchanger, thoroughly
The nucleus equipments such as flat generating set, cooler.Wherein the major function of turbine power generation unit is to face being in the super of the condition of high temperature
The interior kinetic energy that can be converted to rotating machinery of boundary's carbon dioxide working medium, and further the kinetic energy of rotating machinery is converted to electric energy,
It it is one of the nucleus equipment of system.
Turbine power generation unit in this system typically operates on the stagnation condition of carbon dioxide working medium, has operation
The features such as pressure is high, back pressure is high, enthalpy drop is little, flow is big, and consider typically to require that system has compact conformation, body from operation angle
The features such as long-pending little, aid system is few, low leakage even zero leakage.No matter tradition turbine power generation unit is in working medium feature, operation ginseng
Number aspect, or in terms of the technology requirement such as structure, leakage, all required with this system turbine power generation unit differs bigger.For
Meeting the technology requirement to turbine power generation unit of the supercritical carbon dioxide electricity generation system, it is tight that the application proposes a kind of simple in construction
Gather, high efficiency, aid system are few, the turbine power generation unit of zero leakage.
Utility model content
The purpose of this utility model is to develop a kind of turbine power generation unit with supercritical carbon dioxide as working medium, it is achieved knot
Structure is the compactest, high efficiency, aid system are few, the target of zero leakage, meets supercritical carbon dioxide electricity generation system and sends out turbine
The technical need of group of motors.
The turbine power generation unit with supercritical carbon dioxide as working medium that the application provides, mainly by turbo-expander, height
Speed generator two large divisions forms.Its operation principle is: the interior of High Temperature High Pressure working medium operationally can be passed through by turbo-expander
Decompressional expansion is converted to the rotational kinetic energy of impeller, and impeller drives high-speed power generation machine rotor to rotate by bearing, and cutting magnetic line produces
Raw electric energy.Turbo-expander is connected by same main shaft with high-speed engine, has identical rotating speed, and seal during operation
In the pressure shell being made up of high pressure and low pressure border, it is achieved that externally zero leakage.
Concrete technical scheme is as follows:
A kind of turbine power generation unit with supercritical carbon dioxide as working medium, described turbine power generation unit is by turbo-expander
Form with high-speed engine two parts；Described turbo-expander and high-speed engine are connected by same main shaft, have during operation
Identical rotating speed, and be sealed in the pressure shell being made up of high pressure shell and low pressure shell；
Described turbo-expander part is by high pressure shell, turbo-expander impeller, tooth sealing, gas injection pipeline, dry gas seals
Parts are constituted；Described high-speed engine part is by left radial bearing, high-speed engine, cod, right radial bearing, low
Pressure shell, suction pump parts are constituted；
Described turbo-expander part to the major axes orientation of high-speed engine from left to right, is close to along turbo-expander impeller
The right side of turbo-expander impeller arranges that tooth seals, the layout that is spaced a distance dry gas seals, and gas injection pipeline is arranged in tooth and seals
With between dry gas seals, the sealing of turbo-expander impeller, tooth, dry gas seals, gas injection pipeline are respectively positioned in high pressure shell；Dry gas is close
Left radial bearing, high-speed engine, cod, right radial bearing, and left radial bearing, height it is sequentially arranged on the right side of envelope
Speed generator, cod and right radial bearing are arranged in low pressure shell；
Described high pressure shell is connected by tooth sealing and dry gas seals with low pressure shell.
In the application, the carbon dioxide of high pressure low temperature is injected tooth and seals between dry gas seals by described gas injection pipeline
Chamber；Make the high temperature carbon dioxide in turbo-expander can not be to this chamber leaks, it is ensured that bearing working is at normal temperature model
In enclosing, improve the work efficiency of turbo-expander simultaneously.
In the application, described suction pump extracts working medium to unit in the chamber between high-speed power generation machine rotor and stator
Outward, it is ensured that in chamber, be in lower pressure state, reduce the windage loss that rotor high speed rotating causes, improve overall efficiency.
Preferably, high-speed engine described herein uses carbon dioxide as cooling medium.
Preferably, bearing described herein is magnetic bearing；When application power grade is relatively big, simultaneously to structure letter
When change, working medium degree of purity and leakage rate control to require relatively low, described left radial bearing, cod and right radial bearing can
Think oil-lubricated bearing or gas bearing foil.When described left radial bearing, cod and right radial bearing are glossy slide-bar
When holding, turbine power generation unit also includes the oil supply system being connected with oil-lubricated bearing.
In the application, according to the difference of system power grade, described turbo-expander can be radial-flow type or axial-flow type.
In the application, according to the application control requirement to leakage rate, described tooth seals and combines with dry gas seals, shape
Become a sealing system..
In the application, described generating set also includes the source of the gas being connected with gas injection pipeline: be arranged on outside generating set follows
The high pressure low temperature point of loop systems or high-pressure carbon dioxide storage tank, the most described source of the gas both can be from the cyclic system at generating set place
The high pressure low temperature point of system obtains, it is also possible to obtain in the extra high-pressure carbon dioxide storage tank arranged from generating set.
Preferably, high pressure low temperature described herein is that pressure is higher than 7MPa, and temperature is less than 100 DEG C.
In the application, when the working medium in suction pump extraction high-speed engine chamber to unit is outer, according to application needs
Both the entry position of the recycle system coolers at generating set place can be pumped to, it is possible to be pumped to outside generating set additionally arrange
Pressure vessel or air.Therefore, described generating set also includes that the recycle system coolers being connected with suction pump or pressure hold
Device or air.When suction pump is pumped to the entry position of recycle system coolers, in system, working medium quality is in poised state,
Without extra air compensating system.When being pumped to the pressure vessel or the air that additionally arrange, need extra air compensating system in real time to
System gas injection, it is ensured that in generating set, working medium quality is in poised state.The most described suction pump is connected with pressure vessel or air
Time, generating set also includes air compensating system, and described air compensating system is in real time to system gas injection, it is ensured that in generating set at working medium quality
In poised state.
Beneficial effect: the turbine power generation unit with supercritical carbon dioxide as working medium that the application proposes, uses coaxial high
Rotating speed Integral sealing designs, and farthest achieves simple, miniaturization and the zero leakage of turbine power generation unit, devises gas injection
And suction system, improve unit efficiency, general requirement the reality of system can be met for supercritical carbon dioxide electricity generation system
The highest efficiency.
Accompanying drawing explanation
Fig. 1 is the structural representation of the turbine power generation unit with supercritical carbon dioxide as working medium.
In figure: 1-high pressure shell, 2-turbo-expander impeller, 3-tooth seals, 4-dry gas seals, 5-left radial bearing,
6-high-speed engine, 7-cod, 8-right radial bearing, 9-gas injection pipeline, 10-low pressure shell, 11-suction pump, 12-master
Axle.
Detailed description of the invention
Below in conjunction with drawings and Examples, the technical solution of the utility model carried out clearly, be fully described by, aobvious
So, described embodiment is only a part of embodiment of this utility model rather than whole embodiments.Based on this utility model
In embodiment, those of ordinary skill in the art obtained on the premise of not making creative work all other is real
Execute example, broadly fall into the scope of this utility model protection.
This utility model provides a kind of turbine power generation unit with supercritical carbon dioxide as working medium, and it is mainly swollen by turbine
Swollen machine, high-speed engine two large divisions composition.Operation principle is: turbo-expander is operationally by the interior energy of High Temperature High Pressure working medium
Be converted to the rotational kinetic energy of impeller by decompressional expansion, impeller drives high-speed power generation machine rotor to rotate by bearing, cuts magnetic force
Line produces electric energy.Turbo-expander is connected by same bearing with high-speed engine, has identical rotating speed during operation, and
It is sealed in the pressure shell being made up of high pressure and low pressure border, it is achieved that externally zero leakage.
Specifically, as it is shown in figure 1, be the structural representation of the turbine power generation unit with supercritical carbon dioxide as working medium
Figure, it is mainly by high pressure shell 1, turbo-expander impeller 2, tooth sealing 3, dry gas seals 4, left radial bearing 5, high-speed power generation
The parts such as machine 6, cod 7, right radial bearing 8, gas injection pipeline 9, low pressure shell 10, suction pump 11 are constituted.Turbine expansion
Machine impeller 2, high-speed engine 6 are connected by same main shaft 12.High pressure shell 1 and low pressure shell 10 by tooth seal 3 and
Dry gas seals 4 is connected.
It is seen also in fig. l that along turbo-expander impeller 2 to high-speed engine 6 major axes orientation from left to right, be close to
The right side of turbo-expander impeller 2 arranges that tooth seals 3, and the layout that keeps at a certain distance away dry gas seals 4, gas injection pipeline 9 is arranged in tooth
Sealing between 3 and dry gas seals 4, turbo-expander impeller 2, tooth sealing 3, dry gas seals 4, gas injection pipeline 9 are respectively positioned on outside high pressure
In shell 1.Left radial bearing 5, high-speed engine 6, cod 7, right radial bearing 8 it is sequentially arranged on the right side of dry gas seals 4,
And be all placed in low pressure shell 10.The carbon dioxide of high pressure low temperature is injected tooth sealing 3 and dry gas seals by gas injection pipeline 9
Chamber between 4, it is ensured that the high temperature carbon dioxide in high pressure shell 1 is not to this chamber leaks, it is ensured that bearing working is at positive room temperature
In the range of degree.Suction pump 11 extracts sealing leak working medium to unit in low pressure shell 10, it is ensured that be in low pressure shell 10
Lower pressure state, reduces windage loss, improves overall efficiency, it is ensured that structural intergrity.
In actual applications, described turbo-expander i.e. turbo-expander impeller 2 both can use radial-flow type, it is possible to uses
Axial-flow type.
In actual applications, described high-speed engine 6 uses carbon dioxide as cooling medium.
In actual applications, it is preferable that described left radial bearing 5, cod 7, right radial bearing 8 are magnetic force axle
Hold；According to the different demands of application, left radial bearing 5, cod 7, right radial bearing 8 can also use glossy
Plain besring or gas bearing foil, wherein oil-lubricated bearing needs a set of oil supply system of extra interpolation.
In actual applications, according to the different demands of application, described tooth seals 3 and combines with dry gas seals 4, is formed
One sealing system.
In actual applications, suction pump 11 extract working medium in high-speed engine 6 chamber to unit outer time, right according to application
As needing both to be pumped to be arranged on the entry position of the recycle system coolers at generating set place, it is possible to be pumped to electromotor
The outer extra pressure vessel arranged of group or air.When being pumped to the entry position of recycle system coolers, working medium in generating set
Quality is in poised state, it is not necessary to extra air compensating system.When being pumped to the pressure vessel or the air that additionally arrange, need extra
Air compensating system in real time to system gas injection, it is ensured that in generating set, working medium quality is in poised state.
In actual applications, the source of the gas of gas injection pipeline 9 both can be from the high pressure low temperature point of the blood circulation generating set
Obtain, it is also possible to obtain from the extra high-pressure carbon dioxide storage tank arranged.
Preferably, high pressure low temperature described herein is that pressure is higher than 7MPa, and temperature is less than 100 DEG C.
The turbine power generation unit that the utility model proposes has the advantages such as system is simple, volume is little, high efficiency, zero leakage,
It is suitable as the turbine power generation unit of supercritical carbon dioxide electricity generation system.
Claims (10)
1. the turbine power generation unit with supercritical carbon dioxide as working medium, it is characterised in that described turbine power generation unit by
Turbo-expander and high-speed engine two parts composition；Described turbo-expander and high-speed engine are connected by same main shaft,
There is during operation identical rotating speed, and be sealed in the pressure shell being made up of high pressure shell and low pressure shell；
Described turbo-expander part is by high pressure shell, turbo-expander impeller, tooth sealing, gas injection pipeline, dry gas seals parts
Constitute；Outside described high-speed engine part is by left radial bearing, high-speed engine, cod, right radial bearing, low pressure
Shell, suction pump parts are constituted；
Described turbo-expander part to the major axes orientation of high-speed engine from left to right, is close to turbine along turbo-expander impeller
The right side of decompressor impeller arranges that tooth seals, the layout that is spaced a distance dry gas seals, and gas injection pipeline is arranged in tooth and seals and dry
Between hermetic seal, the sealing of turbo-expander impeller, tooth, dry gas seals, gas injection pipeline are respectively positioned in high pressure shell；Dry gas seals is right
Side is sequentially arranged left radial bearing, high-speed engine, cod, right radial bearing, and left radial bearing, high speed are sent out
Motor, cod and right radial bearing are arranged in low pressure shell；
Described high pressure shell is connected by tooth sealing and dry gas seals with low pressure shell.
A kind of turbine power generation unit with supercritical carbon dioxide as working medium the most according to claim 1, it is characterised in that
The carbon dioxide of high pressure low temperature is injected tooth and seals the chamber between dry gas seals by described gas injection pipeline.
A kind of turbine power generation unit with supercritical carbon dioxide as working medium the most according to claim 1, it is characterised in that
Described suction pump extracts working medium to unit in the chamber between high-speed power generation machine rotor and stator.
A kind of turbine power generation unit with supercritical carbon dioxide as working medium the most according to claim 1, it is characterised in that
Described left radial bearing, cod and right radial bearing are appointing in magnetic bearing or oil-lubricated bearing or gas bearing foil
Meaning one.
A kind of turbine power generation unit with supercritical carbon dioxide as working medium the most according to claim 4, it is characterised in that
When described left radial bearing, cod or right radial bearing are oil-lubricated bearing, turbine power generation unit also includes and oil
The oil supply system that lubrication bearing is connected.
A kind of turbine power generation unit with supercritical carbon dioxide as working medium the most according to claim 1, it is characterised in that
Described tooth seals and combines with dry gas seals, forms a combined labyrinth and carbon gland system.
A kind of turbine power generation unit with supercritical carbon dioxide as working medium the most according to claim 1, it is characterised in that
Described generating set also includes the source of the gas being connected with gas injection pipeline: be arranged at the high pressure low temperature point of generating set place blood circulation
Or the high-pressure carbon dioxide storage tank outside generating set.
8., according to a kind of turbine power generation unit with supercritical carbon dioxide as working medium described in claim 2 or 7, its feature exists
In, described high pressure low temperature is that pressure is higher than 7MPa, and temperature is less than 100 DEG C.
A kind of turbine power generation unit with supercritical carbon dioxide as working medium the most according to claim 3, it is characterised in that
Described generating set also includes the cooler being arranged at generating set place blood circulation or the generating set being connected with suction pump
Outer pressure vessel or air.
A kind of turbine power generation unit with supercritical carbon dioxide as working medium the most according to claim 9, its feature exists
In, when described suction pump is connected with pressure vessel or air, generating set also includes air compensating system, described air compensating system in real time to
Gas injection in generating set, it is ensured that in generating set, working medium quality is in poised state.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620803188.8U CN205840927U (en) | 2016-07-28 | 2016-07-28 | A kind of turbine power generation unit with supercritical carbon dioxide as working medium |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620803188.8U CN205840927U (en) | 2016-07-28 | 2016-07-28 | A kind of turbine power generation unit with supercritical carbon dioxide as working medium |
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| CN205840927U true CN205840927U (en) | 2016-12-28 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107448246A (en) * | 2017-07-26 | 2017-12-08 | 中国科学院工程热物理研究所 | A kind of supercritical carbon dioxide turbine generators |
| CN108626398A (en) * | 2018-06-08 | 2018-10-09 | 中国船舶重工集团公司第七〇九研究所 | A kind of system that high pressure oil-containing gases leakage reclaiming clean recharges |
| CN111636930A (en) * | 2020-04-22 | 2020-09-08 | 中国核动力研究设计院 | High-temperature-resistant supercritical carbon dioxide turbine dry gas sealing device |
| CN115313708A (en) * | 2022-09-29 | 2022-11-08 | 中国核动力研究设计院 | Stator structure and motor in supercritical carbon dioxide power generation system |
| US12000406B2 (en) | 2022-06-03 | 2024-06-04 | General Electric Company | Impeller bearings for pumps |
-
2016
- 2016-07-28 CN CN201620803188.8U patent/CN205840927U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107448246A (en) * | 2017-07-26 | 2017-12-08 | 中国科学院工程热物理研究所 | A kind of supercritical carbon dioxide turbine generators |
| CN108626398A (en) * | 2018-06-08 | 2018-10-09 | 中国船舶重工集团公司第七〇九研究所 | A kind of system that high pressure oil-containing gases leakage reclaiming clean recharges |
| CN111636930A (en) * | 2020-04-22 | 2020-09-08 | 中国核动力研究设计院 | High-temperature-resistant supercritical carbon dioxide turbine dry gas sealing device |
| CN111636930B (en) * | 2020-04-22 | 2021-11-30 | 中国核动力研究设计院 | High-temperature-resistant supercritical carbon dioxide turbine dry gas sealing device |
| US12000406B2 (en) | 2022-06-03 | 2024-06-04 | General Electric Company | Impeller bearings for pumps |
| CN115313708A (en) * | 2022-09-29 | 2022-11-08 | 中国核动力研究设计院 | Stator structure and motor in supercritical carbon dioxide power generation system |
| CN115313708B (en) * | 2022-09-29 | 2022-12-20 | 中国核动力研究设计院 | Stator structure and motor in supercritical carbon dioxide power generation system |
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