• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to an arrangement for energy provision (1), which comprises at least one internal combustion engine (2) for energy provision, a power turbine (3) for utilising a part of an exhaust gas mass flow of the internal combustion engine (2), a planetary gear (6) arranged on a shaft (7) of the power turbine and a generator (5), which is drive-effectively connected to the planetary gear (6) for generating electric energy, wherein on an exhaust line (10) of the internal combustion engine (2), a high-pressure turbine (8), a high-pressure compressor (9), a low-pressure turbine (11) with a variable turbine geometry and a low-pressure compressor (12) are flow-effectively arranged in series for realising an exhaust gas mass flow control, wherein the exhaust gas mass flow control takes place at least by means of the variable turbine geometry of the low-pressure turbine (11), and wherein upstream of the high-pressure turbine (8) a controllable tap (13) is arranged on the exhaust line (10), which is designed for conducting a part of the exhaust gas mass flow of the internal combustion engine (2) between the same and the power turbine (3). Furthermore, the invention relates to a method for operating the arrangement.
    公开号:FI20205776A1
    申请号:FI20205776
    申请日:2020-07-30
    公开日:2021-02-02
    发明作者:Gerhard Schlegl；Jens Lange
    申请人:Man Energy Solutions Se；
    IPC主号:
    专利说明:

    PB06054 MAN Energy Solutions SE
    ARRANGEMENT FOR ENERGY PROVISION Description The invention relates to an arrangement for energy provision, which comprises at least one internal combustion engine for energy provision, a power turbine for utilising a part of an exhaust gas mass flow of the internal combustion engine, a planetary gear arranged on a shaft of the power turbine and a generator, which for generating electric energy is drive-effectively connected to the planetary gear. Furthermore, the invention relates to a method for the operation of this arrangement. Power plants for energy generation are generally operated by means of an internal combustion engine, preferentially a diesel or gas engine as drive unit for the electric generator. Power plants, in particular power plants for being able to offset peak loads, which are largely embodied as pumped-storage power plants, compressed air storage power plants or gas turbine power plants, reach rates of change of up to 20% of the rated power per minute and have a run-up time of only a few minutes. The power can be controlled between 20% N and 100%. They are utilised in order to match the N fluctuations in the power demand or the generator S input, which cannot be compensated by the other power 3 plant types, or with which this is not economically = practical. Peak load power plants are mostly employed o only a few hours per day: at the consumption peaks, in R the case of major load increases in the grid and in the S case of unplanned fluctuations of power consumption and N generation. Through the consumption of natural gas or pump energy, the power generated by these is
    - 2 - significantly more expensive than the power of other power plant types.
    The object of the present invention is to provide an arrangement for providing energy in particular of a power plant and a method for operating such an arrangement, which increases the efficiency and consequently lowers the costs for the energy provision.
    This object is solved through the feature combination according to Patent Claim 1. According to the invention, an arrangement for energy provision is proposed, which comprises at least one internal combustion engine for energy provision, a power turbine for utilising a part of an exhaust gas mass flow of the internal combustion engine, a planetary gear arranged on a shaft of the power turbine and a generator, which is drive-effectively connected to the planetary gear for generating electric energy.
    On an exhaust line of the internal combustion engine, a high-pressure turbine, a high-pressure compressor, a low-pressure turbine with a variable turbine geometry and a low-pressure compressor are flow-effectively arranged in series for realising an exhaust gas mass flow control.
    The exhaust gas mass flow control is effected at least by means of the variable turbine Q geometry of the low-pressure turbine and upstream of N the high-pressure turbine a controllable tap is S arranged on the exhaust line, which is formed for 3 conducting a part of the exhaust gas mass flow of the = internal combustion engine between the same and the o power turbine.
    The turbo compounding, during which an R internal combustion engine, in which the energy content S of the exhaust gases is utilised through a power N turbine connected downstream, combined with an exhaust gas mass flow control by means of the variable turbine
    - 3 — geometry on the low-pressure turbine of the supercharging group, results in a power increase and an efficiency increase of the multi-stage supercharged internal combustion engines. Furthermore, an improvement of the response behaviour of the supercharging group in the engine part load and resulting from this a better part load consumption of the internal combustion engine materialises. Apart from this, the load switching behaviour is improved. The tapping of the exhaust gas mass flow that is additionally available from the minimum power of the internal combustion engine is preferably effected via the former waste gate connection in the exhaust line of the internal combustion engine upstream of the high- pressure turbine. In an advantageous embodiment version it is provided that the tap comprises a controllable shut-off device, by means of which the exhaust gas mass flow from the internal combustion engine to the power turbine is controllable. In the case of loads of the internal combustion engine that are lower than a predetermined minimum power, the tap is closed by means of a shut-off device. In this way, the internal combustion engine can realise guicker load ramps in this operating range by means of the variable turbine geometry.
    N Preferentially, the arrangement for the energy N provision is designed so that the internal combustion S engine and the power turbine are each supercharged in a 3 single stage or in multiple stages. Here it is = favourable that the arrangement can be adapted to the o respective peripheral conditions.
    i S In an exemplary embodiment of the invention it is N provided that a second internal combustion engine is flow-effectively connected to the power turbine or
    - 4 — energy provision. The power control range resulting from the use of the planetary gear of approximately 50% of the rated power of the power turbine makes it possible to connect two engines to one power turbine. By way of this, the efficiency of the arrangement is further optimised. In this, the method makes possible the combination of an engine and a power turbine as well as two engines and a power turbine. Furthermore, an embodiment is favourable in which on the respective high-pressure compressor and on the respective low-pressure compressor two charge air coolers for recirculating and cooling a part of the exhaust gas mass flow to the internal combustion engine each are arranged. For realising maximum compressor efficiencies and thus also a maximum overall efficiency of the arrangement, the charge air coolers are operated with maximum cooling. In a further advantageous version it is provided according to the invention that the tap, downstream of the low-pressure compressor, is connected to the exhaust line. By way of this, the exhaust gas can be conducted from the power turbine back into the exhaust line and the further plant components, such as for example exhaust gas after-treatment systems, can likewise be utilised for this exhaust gas conducted N through the power turbine.
    N S According to the invention, a method for operating an 3 arrangement for energy provision according to the above E features is proposed, comprising the following steps: © R a. generating an excess of the exhaust gas mass flow S through the high-pressure compressor, the low- N pressure compressor and a charge air cooler from a
    — 5 — predetermined power of the internal combustion engine, b. opening the controllable shut-off device of the tap, C. extracting at least a part of the additionally generated exhaust gas mass flow via the tap, d. expanding the extracted exhaust gas mass flow in the power turbine. The configuration of the supercharging group and of the charge air cooling is effected in such a manner that from a minimum power to be determined an exhaust gas mass flow excess is generated. The engine start and the synchronisation of the engines is effected separately for each engine. A run-up of the engines from 0% load up to the predetermined power of the internal combustion engine likewise takes place separately for each engine with closed shut-off device of the tap. For connecting the power turbine, the shut-off device is slowly opened from the reaching of the predetermined power. As soon as the power turbine is in engagement, the two connected engines have to supply comparable exhaust gas parameters in order to largely exclude a mutual influencing of the engines. For this reason, Q both internal combustion engines are operated with the N same load.
    S 3 The method according to the invention is carried out in = an embodiment version so that the exhaust gas mass flow o control in step a) is effected by means of the variable N turbine geometry of the low-pressure turbine.SN
    — 6 — It is advantageous, furthermore, when the predetermined power of the combustion engine in the abovementioned step a) amounts to 85% to 90%. In an embodiment of the present method it is provided, furthermore, that in step a) the charge air coolers are operated with at least 95% of their possible cooling capacity.
    By way of this, a maximum compressor efficiency and conseguently also a maximum overall efficiency of the method is made possible.
    Here, a guarantee temperature is 10° C.
    In a preferred embodiment of the method, a scavenging pressure gradient is reduced by means of the variable turbine geometry of the low-pressure turbine.
    The reduction of the scavenging pressure gradient, for example from 1.4 bar to 1 bar, makes available additional exhaust gas pressure potential for the power turbine and thus increases the overall efficiency of the method.
    In an exemplary embodiment of the method it is provided that in step d) the power of the power turbine is controlled by means of the planetary gear and a bypass.
    Preferentially, the method is carried out so that during a guick load change of the internal combustion engine or a failure of the power turbine the bypass is N opened.
    During dynamic operating requirements, such as N for example rapid engine load changes, and during a S failure of the power turbine, the power turbine can be 2 bypassed by means of a rapid bypass control. = c In an advantageous exemplary embodiment it is provided R that a recirculation of the extracted exhaust gas mass S flow into the exhaust line via the tap takes place downstream of the low-pressure compressor.
    - 7 = Other advantageous further developments of the invention are characterized in the subclaims or are presented in more detail by way of the figures together with the description of the preferred embodiment of the invention.
    It shows: Fig. 1 a schematic diagram of an arrangement for energy provision.
    In Figure 1, a schematic diagram of an arrangement for energy provision 1 with two internal combustion engines 2 is shown.
    On each of the two internal combustion engines 2, an exhaust line 10 is formed which conducts the exhaust gas of the internal combustion engine 2 through a high-pressure turbine 8, a high-pressure compressor 9, a low-pressure turbine 11 with a variable turbine geometry and a low-pressure compressor 12. These four components arranged on the respective exhaust line 10, which are also referred to as supercharging group, are flow-effectively arranged in series for realising an exhaust gas mass flow control.
    Here, at least the variable turbine geometry of the low-pressure turbine 11 is provided for the exhaust gas mass flow control.
    Furthermore, two charge air coolers 15 each for cooling and for recirculating a part of the exhaust gas mass Q flow to the respective internal combustion engine 2 are N arranged on the two high-pressure compressors 9 and on S the two low-pressure compressors 12. a = Figure 1 shows, furthermore, that on the two internal o combustion engines 2, in each case upstream of the N high-pressure turbine 8, a controllable tap 13 is S arranged on the exhaust line 10. This tap 13 flow- N effectively conducts a part of the exhaust gas mass flow of the internal combustion engine 2 from the same
    - 8 - to a power turbine 3, which is arranged between the two internal combustion engines 2 for energy provision.
    The power turbine 3 serves for utilising the diverted part of the exhaust gas mass flow of the internal combustion engine 2 by means of a planetary gear 6 arranged on a shaft of the power turbine 3 and of a generator 5, which for generating electric energy is drive- effectively connected to the planet gear 6. Furthermore, the tap 13 comprises a shut-off device 14, by means of which the exhaust gas mass flow from the internal combustion engine 2 to the power turbine 3 is controllable.
    On the power turbine 3, a bypass 16 is additionally formed, by way of which the exhaust gas mass flow can be conducted past the power turbine 3. Following the generator 5, the tap 13, is connected to the exhaust line 10 downstream of the outlet of the low-pressure compressor 12. This exemplary embodiment can be operated with the method described above in more detail.
    List of reference numbers
    1 Arrangement for energy provision 2 Internal combustion engine 3 Power turbine Generator
    N 6 Planetary gear
    N 8 High-pressure turbine
    S 9 High-pressure compressor
    3 10 Exhaust line
    I 11 Low-pressure turbine c 12 Low-pressure compressor
    N 13 Tap
    S 14 Shut-off device
    N 15 Charge air cooler 16 Bypass
    权利要求:
    Claims (14)
    [1] 1. An arrangement for energy provision (1), comprising at least one internal combustion engine (2) for energy provision, a power turbine (3) for utilising a part of an exhaust gas mass flow of the internal combustion engine (2), a planetary gear (6) arranged on a shaft of the power turbine (3) and a generator (5), which is drive- effectively connected to the planetary gear (6) for generating electric energy, wherein on an exhaust line (10) of the internal combustion engine (2) a high-pressure turbine (8), a high-pressure compressor (9), a low-pressure turbine (11) with a variable turbine geometry and a low-pressure compressor (12) are flow- effectively arranged in series for realising an exhaust gas mass flow control, wherein the exhaust gas mass flow control is effected at least by means of the variable turbine geometry of the low- pressure turbine (11) and, wherein upstream of the high-pressure turbine (8) a controllable tap (13) is arranged on the exhaust line (10), which is formed for conducting a part of the exhaust gas mass flow of the internal N combustion engine (2) between the same and the N power turbine (3).
    S 2
    [2] 2. The arrangement for energy provision (1) according = to Claim 1, wherein the tap (13) comprises a o controllable shut-off device (14), by means of W which the exhaust gas mass flow from the internal S combustion engine (2) to the power turbine (3) is N controllable.
    - 2 -
    [3] 3. The arrangement for energy provision (1) according to Claim 1 or 2, wherein the internal combustion engine (2) and the power turbine (3) are each supercharged in a single stage or multiple stages.
    [4] 4. The arrangement for energy provision (1) according to any one of the Claims 1 to 3, wherein a second internal combustion engine (2) for energy provision is flow-effectively connected to the power turbine (3).
    [5] 5. The arrangement for energy provision (1) according to any one of the preceding claims, wherein on the respective high-pressure compressor (9) and on the respective low-pressure compressor (12) two charge air coolers (15) each are arranged for recirculating and cooling a part of the exhaust gas mass flow to the internal combustion engine (2).
    [6] 6. The arrangement for energy provision (1) according to any one of the preceding claims, wherein the tap (13) is connected to the exhaust line (10) downstream of the low-pressure compressor (12).
    [7] 7. A method for operating an arrangement for energy provision (1) according to any one of the N preceding Claims 2 to 4, comprising the following N steps:
    S 3 a. generating an excess of the exhaust gas mass z flow through the high-pressure compressor c (9), the low-pressure compressor (12) and a R charge air cooler (15) from a predetermined S power of the combustion engine (2),
    O
    N
    - 3 — b. opening the controllable shut-off device (14) of the tap (13), C. extracting at least a part of the additionally generated exhaust gas mass flow via the tap (13), d. expanding the extracted exhaust gas mass flow in the power turbine (3).
    [8] 8. The method for operating an arrangement for energy provision (1) according to Claim 7, wherein the exhaust gas mass flow control in step a) takes place by means of the variable turbine geometry of the low-pressure turbine (11).
    [9] 9. The method for operating an arrangement for energy provision (1) according to Claim 7 or 8, wherein the predetermined power of the internal combustion engine (2) in step a) amounts to 85% to 90%.
    [10] 10. The method for operating an arrangement for energy provision (1) according to any one of the Claims 7 to 9, wherein in step a) the charge air coolers (15) are operated with at least 95% of their possible cooling capacity.
    N
    [11] 11. The method for operating an arrangement for energy N provision (1) according to any one of the Claims 7
    K O to 10, wherein by means of the variable turbine 3 geometry the low-pressure turbine (11) a z scavenging pressure gradient is reduced.
    a © N
    [12] 12. The method for operating an arrangement for energy S provision (1) according to any one of the Claims 7 N to 11, wherein in step d) the power of the power
    - 4 — turbine (3) is controlled by means of the planetary gear (6) and a bypass (16).
    [13] 13. The method for operating an arrangement for energy provision (1) according to any one of the Claims 7 to 12, wherein during a rapid load change of the internal combustion engine (2) or a failure of the power turbine (3), the bypass (16) is opened.
    [14] 14. The method for operating an arrangement for energy provision (1) according to any one of the Claims 7 to 13, wherein a recirculation of the extracted exhaust gas mass flow into the exhaust line (10) via the tap (13) takes place downstream of the low-pressure compressor (12).
    oO
    N
    O
    N
    K <Q oO
    O
    I jami a ©
    PP
    PP
    LO
    O
    N
    O
    N
    类似技术:
    公开号 | 公开日 | 专利标题
    US10584637B2|2020-03-10|Gas turbine efficiency and regulation speed improvements using supplementary air system continuous and storage systems and methods of using the same
    US6901759B2|2005-06-07|Method for operating a partially closed, turbocharged gas turbine cycle, and gas turbine system for carrying out the method
    EP2101047B1|2014-12-17|Internal Combustion Engine and Method
    US10119460B2|2018-11-06|Integrated turboshaft engine
    US20140130507A1|2014-05-15|Gas turbine plant with exhaust gas recirculation and also method for operating such a plant
    US20120047906A1|2012-03-01|Combustion turbine cooling media supply method
    US9890707B2|2018-02-13|Gas turbine efficiency and regulation speed improvements using supplementary air system continuous and storage systems and methods of using the same
    US11047307B2|2021-06-29|Hybrid expander cycle with intercooling and turbo-generator
    KR20060048176A|2006-05-18|Motive power unit with exhaust gas turbocharger and scr-catalytic converter
    EP2932058B1|2021-02-17|Turbogenerator system and method
    EP2484873A1|2012-08-08|Control device for power generation system, power generation system, and control method for power generation system
    US10767515B2|2020-09-08|Method for liquid air and gas energy storage
    WO2010092945A1|2010-08-19|Gas engine system and method for controlling same
    US20150369125A1|2015-12-24|Method for increasing the power of a combined-cycle power plant, and combined-cycle power plant for conducting said method
    US10940424B2|2021-03-09|Method for liquid air energy storage with fueled and zero carbon emitting power output augmentation
    US10634013B2|2020-04-28|Method for liquid air energy storage with semi-closed CO2 bottoming cycle
    US10677162B2|2020-06-09|Grid scale energy storage systems using reheated air turbine or gas turbine expanders
    FI20205776A1|2021-02-02|Arrangement for energy provision
    CN105386856A|2016-03-09|Two-stage sequential turbocharging system used for internal combustion engine and internal combustion engine
    CN105065110A|2015-11-18|Organic rankine cycle and electric power dual-drive internal combustion engine pressurization system
    KR101098662B1|2011-12-23|Engine system
    RU83101U1|2009-05-20|TURBOCHARGER UNIT FOR COMPRESSING AIR AND GIVING IT TO A TECHNOLOGICAL PROCESS OF PRODUCTION OF NITRIC ACID
    US20180258850A1|2018-09-13|Constant flow function air expansion train with combuster
    DE202015103048U1|2015-07-02|Exhaust Turbo-supercharged internal combustion engine with waste gate turbine
    CN108286467B|2020-06-16|Engine waste heat utilization system suitable for hybrid vehicle
    同族专利:
    公开号 | 公开日
    GB202009449D0|2020-08-05|
    GB2587858A|2021-04-14|
    DE102019120817A1|2021-02-04|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    JPS6345409A|1986-08-13|1988-02-26|Ishikawajima Harima Heavy Ind Co Ltd|Power plant|
    JPH0584809B2|1988-06-29|1993-12-03|Isuzu Motors Ltd|
    CH701133A2|2009-05-29|2010-11-30|Schmid W Ag|Device for increasing efficiency of drive of thermal power station, has expander e.g. piston expander, provided at exhaust pipe, where hot exhaust gas flow is emitted into atmosphere or to heat consumer through outlet of device|
    DE102009042283A1|2009-09-22|2011-03-31|Abb Turbo Systems Ag|Turbocompound system and components|
    DE102010028200B4|2010-04-26|2016-02-04|Man Diesel & Turbo Se|Engine assembly|
    CN203604021U|2013-11-15|2014-05-21|重庆交通大学|Exhaust turbine generating device|
    AT517247B1|2015-05-29|2017-06-15|Ge Jenbacher Gmbh & Co Og|Method for operating an internal combustion engine|
    DE102015215518A1|2015-08-14|2017-02-16|Bayerische Motoren Werke Aktiengesellschaft|System for recovering energy from the exhaust gas of an internal combustion engine|
    CN109072815A|2015-12-14|2018-12-21|伊顿智能动力有限公司|It is controlled with the optimization engine of electrochemical air inlet and exhaust outlet|
    WO2018138314A1|2017-01-30|2018-08-02|Jaguar Land Rover Limited|Waste heat recovery system|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE102019120817.3A|DE102019120817A1|2019-08-01|2019-08-01|Arrangement for energy supply|
    [返回顶部]