CN105804807A - Semi-closed organic Rankine cycle turbo expander - Google Patents
Semi-closed organic Rankine cycle turbo expander Download PDFInfo
- Publication number
- CN105804807A CN105804807A CN201610346485.9A CN201610346485A CN105804807A CN 105804807 A CN105804807 A CN 105804807A CN 201610346485 A CN201610346485 A CN 201610346485A CN 105804807 A CN105804807 A CN 105804807A
- Authority
- CN
- China
- Prior art keywords
- turbine section
- turbine
- turbine segment
- impeller
- semi
- 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
- F01D13/00—Combinations of two or more machines or engines
- F01D13/02—Working-fluid interconnection of machines or engines
-
- 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
- F01D15/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
- F01D15/10—Adaptations for driving, or combinations with, electric generators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K25/00—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for
- F01K25/08—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for using special vapours
Abstract
The invention provides a semi-closed organic Rankine cycle turbo expander. A generator is arranged between a first turbine segment and a second turbine segment. The first turbine segment comprises a first turbine segment volute, a first turbine segment guide vane, a first turbine segment impeller and a first turbine segment tail cone. The second turbine segment comprises a second turbine segment volute, a second turbine segment guide vane, a second turbine impeller and a second turbine tail cone. The first turbine segment is connected with the generator through a first turbine segment intermediate. A first turbine segment sealing body, a first turbine segment oil retainer, an anti-thrust radial bearing, a first turbine segment oil retaining body and a first turbine segment sealing piece are arranged in the first turbine segment intermediate. The second turbine segment is connected with the generator through a second turbine segment intermediate. A second turbine segment sealing body, a second turbine segment oil retainer, a radial bearing, a second turbine segment oil retaining body ad a second turbine segment sealing piece are arranged in the second turbine segment intermediate. An air outlet of the first turbine segment is connected with an air inlet of the second turbine segment.
Description
Technical field
The present invention relates to low temperature exhaust heat and reclaim technical field of power generation, be specifically related to a kind of semi-enclosed organic Rankine bottoming cycle turbo-expander.
Background technology
After entering " 12 "; many ministries and commissions of country combine issue " major technologies and equipment autonomous innovation guidance list (version in 2012) "; " organic rankie cycle (ORC) turbine technology " clearly lists catalogue outline in, make every effort to this promote national energy-saving reduce discharging, reduce carbon amounts dust emission, reduce greenhouse effect, protection air quality general requirement realization.According to the lower boiling feature of organic working medium, adopt organic rankie cycle (being called for short ORC) turbine, it is possible to use in industrial process, low-temperature heat source and underground heat, solar energy generate electricity as thermal source.ORC is generally adopted different low-boiling-point organic compound (or mixture) as working medium, select and require that ozone damped expoential (ODP) and greenhouse effect index (GWP) value are little as far as possible during working medium, while should select as far as possible avirulence or toxicity is low, nonflammable, should not be quick-fried and with equipment and materials and lubricating oil, there is the working medium of favorable compatibility.
The feature of environmental protection and safety are worked the mischief by the leakage of working medium on the one hand, cause the increase of unit operation cost on the other hand.Turbo-expander is the most insoluble leakage point in ORC system, prior art generally selects mechanical seal and dry gas seals to seal as axle, but mechanical seal and dry gas sealing structure are all more complicated, manufacture processing request is high, and install cumbersome with when changing, run to system and bring many difficulties.
Currently available technology adopts screw type expansion machine in the development process of the rankine cycle research and small power generator group that carry out organic working medium, and this structure efficiency is relatively low, the power of the assembling unit is subject to this body structure and the restriction of dilating principle.
Summary of the invention
The present invention provides a kind of semi-enclosed organic Rankine bottoming cycle turbo-expander, to overcome prior art to have the little and inefficient problem of leakage, power.
For the deficiency overcoming prior art to exist, present invention provide the technical scheme that semi-enclosed organic Rankine turbo-expander, electromotor is placed between the first turbine section and the second turbine section, first turbine section includes the first turbine section spiral case, the first turbine section stator, the first turbine section impeller and the first turbine section caudal vertebra, and the second turbine section includes the second turbine section spiral case, the second turbine section stator, the second turbine section impeller and the second turbine section caudal vertebra；First turbine section is connected by the first turbine section intermediate with electromotor, and the first turbine section seal, the first turbine section oil scraper ring, thrust journal bearing, the first turbine section oil leakproof body and the first turbine section sealing member are arranged in the first turbine section intermediate；Second turbine section is connected by the second turbine section intermediate with electromotor, and the second turbine section seal, the second turbine section oil scraper ring, journal bearing, the second turbine section oil leakproof body and the second turbine section sealing member are arranged in the second turbine section intermediate；And first turbine section venthole and the second turbine section air intake connect.
The first above-mentioned turbine section impeller and the impeller of the second turbine section are single-stage or multistage turbine, and impeller adopts radial flow impeller or aial flow impeller.
Above-mentioned thrust journal bearing and journal bearing adopt sliding bearing or rolling bearing.
Above-mentioned electromotor is the closing motor utilizing working medium to cool down.
Above-mentioned the first turbine section seal, the first turbine section sealing member, the second turbine section seal and the second turbine section sealing member adopt the non-contacting seal such as labyrinth seal or labyrinth seal.
The present invention, relative to prior art, has the advantage that and effect:
1, adopt closing motor to be placed in the semi-enclosed structure in the middle of two turbine sections, there is leak free feature.
2, adopt the design of two turbine sections, there is efficiency height, the feature that the power of the assembling unit is big.For big enthalpy drop and pressure ratio, single stage turbine can not effectively utilize, and adopts two turbine sections both to improve the power of turbo-expander, ensures that again efficiency of expander is higher.Two turbine sections can select radial-flow type or axial turbine, adds turbine expansion progression, reasonable distribution enthalpy drop ratio at different levels, it is ensured that less movable vane peripheral speed is issued to the velocity ratio of the best, thus the wheel efficiency obtained.
3, adopting two turbine section back to back structure, axial thrust is complete equipilibrium almost.
Accompanying drawing explanation
Fig. 1 is the generalized section of the present invention.
Wherein, 1, first turbine section spiral case 2, first turbine section impeller 3, first turbine section caudal vertebra 4, first turbine section seal 5, first turbine section oil scraper ring 6, thrust journal bearing 7, first turbine section intermediate 8, first turbine section oil leakproof body 9, first turbine section sealing member 10, motor stator 11, rotor 12, second turbine section sealing member 13, second turbine section oil leakproof body, 14, second turbine section intermediate 15, journal bearing 16, second turbine section oil scraper ring 17, second turbine section seal 18, second turbine section spiral case 19, second turbine section impeller 20, second turbine section caudal vertebra 21, second turbine section stator 22, axle 23, electromotor case 24, first turbine section stator 25, first turbine section 26, electromotor 27, second turbine section.
Detailed description of the invention
In conjunction with accompanying drawing, the invention will be further described by the examples below.
Embodiment 1:
With reference to Fig. 1, a kind of semi-enclosed organic Rankine bottoming cycle turbo-expander, it is placed between the first turbine section 25 and the second turbine section 27 including electromotor 26, first turbine section includes the first turbine section spiral case the 1, first turbine section stator the 24, first turbine section impeller 2 and the first turbine section caudal vertebra 3, and the second turbine section includes the second turbine section spiral case the 18, second turbine section stator the 21, second turbine section impeller 19 and the second turbine section caudal vertebra 20.First turbine section 25 is connected by the first turbine section intermediate 7 with electromotor 26, first turbine section seal the 4, first turbine section oil scraper ring 5, thrust journal bearing the 6, first turbine section oil leakproof body 8 and the first turbine section sealing member 9 are arranged in the first turbine section intermediate, second turbine section 27 is connected by the second turbine section intermediate 14 with electromotor 26, and second turbine section seal the 17, second turbine section oil scraper ring 16, journal bearing the 15, second turbine section oil leakproof body 13 and the second turbine section sealing member 12 are arranged in the second turbine section intermediate.
During use, gaseous state organic working medium with certain degree of superheat enters the first turbine section spiral case 1, air-flow is evenly distributed to from pipeline on the first turbine section stator 24 below, after stator expansion is accelerated, enter the first turbine section impeller 2 continue expansion work, complete first paragraph expansion work, it is then passed through the first turbine section caudal vertebra 3 to flow out spiral case and enter the second turbine section spiral case 19, equally, after the second turbine section stator 21 expansion is accelerated, enter the second turbine section impeller 20 do work, complete second segment expansion work, in this example, first turbine section impeller and the second turbine section all adopt single-stage radial flow impeller.
Electromotor 26 adopts the working medium identical with decompressor acting to cool down, and is better than air cooling with water-cooled but.Electromotor is placed between two turbine sections and realizes semi-enclosed structure, has stopped refrigerant leakage.
Entering turbine section impeller for preventing bearing oil from penetrating into sealing place, enter the first turbine section dense body 4 by introducing blanket gas and the second turbine section seal 17 completely cuts off turbine oil and enters, this blanket gas can introduce from turbine exhaust section.
Claims (5)
1. a semi-enclosed organic Rankine turbo-expander, it is characterized in that: electromotor (26) is placed between the first turbine section (25) and the second turbine section (27), first turbine section includes the first turbine section spiral case (1), the first turbine section stator (24), the first turbine section impeller (2) and the first turbine section caudal vertebra (3), and the second turbine section includes the second turbine section spiral case (18), the second turbine section stator (21), the second turbine section impeller (19) and the second turbine section caudal vertebra (20)；First turbine section (25) is connected by the first turbine section intermediate (7) with electromotor (26), and the first turbine section seal (4), the first turbine section oil scraper ring (5), thrust journal bearing (6), the first turbine section oil leakproof body (8) and the first turbine section sealing member (9) are arranged in the first turbine section intermediate；Second turbine section (27) is connected by the second turbine section intermediate (14) with electromotor (26), and the second turbine section seal (17), the second turbine section oil scraper ring (16), journal bearing (15), the second turbine section oil leakproof body (13) and the second turbine section sealing member (12) are arranged in the second turbine section intermediate；And first turbine section venthole and the second turbine section air intake connect.
2. semi-enclosed organic Rankine turbo-expander according to claim 1, it is characterized in that: the first described turbine section impeller (2) and the impeller (19) of the second turbine section are single-stage or multistage turbine, described impeller adopts radial flow impeller or aial flow impeller.
3. semi-enclosed organic Rankine turbo-expander according to claim 1, it is characterised in that: described thrust journal bearing (6) and journal bearing (15) adopt sliding bearing or rolling bearing.
4. semi-enclosed organic Rankine turbo-expander according to claim 1, it is characterised in that: described electromotor (26) is the closing motor utilizing working medium to cool down.
5. semi-enclosed organic Rankine turbo-expander according to claim 1, it is characterised in that: described the first turbine section seal (4), the first turbine section sealing member (9), the second turbine section seal (17) and the second turbine section sealing member (12) adopt the non-contacting seal such as labyrinth seal or labyrinth seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610346485.9A CN105804807A (en) | 2016-05-24 | 2016-05-24 | Semi-closed organic Rankine cycle turbo expander |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610346485.9A CN105804807A (en) | 2016-05-24 | 2016-05-24 | Semi-closed organic Rankine cycle turbo expander |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105804807A true CN105804807A (en) | 2016-07-27 |
Family
ID=56452813
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610346485.9A Pending CN105804807A (en) | 2016-05-24 | 2016-05-24 | Semi-closed organic Rankine cycle turbo expander |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105804807A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09112207A (en) * | 1995-10-18 | 1997-04-28 | Mitsubishi Heavy Ind Ltd | Integral turbine generator |
| JP2010163951A (en) * | 2009-01-15 | 2010-07-29 | Honda Motor Co Ltd | Exhaust gas turbine generator for automobile |
| US20110289922A1 (en) * | 2010-05-28 | 2011-12-01 | Calnetix, Inc. | Generating energy from fluid expansion |
| CN205677676U (en) * | 2016-05-24 | 2016-11-09 | 杭州汽轮动力集团有限公司 | Semi-enclosed organic Rankine bottoming cycle turbo-expander |
-
2016
- 2016-05-24 CN CN201610346485.9A patent/CN105804807A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09112207A (en) * | 1995-10-18 | 1997-04-28 | Mitsubishi Heavy Ind Ltd | Integral turbine generator |
| JP2010163951A (en) * | 2009-01-15 | 2010-07-29 | Honda Motor Co Ltd | Exhaust gas turbine generator for automobile |
| US20110289922A1 (en) * | 2010-05-28 | 2011-12-01 | Calnetix, Inc. | Generating energy from fluid expansion |
| CN205677676U (en) * | 2016-05-24 | 2016-11-09 | 杭州汽轮动力集团有限公司 | Semi-enclosed organic Rankine bottoming cycle turbo-expander |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Weiß | Volumetric expander versus turbine–which is the better choice for small ORC plants | |
| Fuller et al. | Turbomachinery for supercritical CO2 power cycles | |
| US8893499B2 (en) | Advanced super-critical CO2 expander-generator | |
| CN107476833B (en) | The self cooled magnetic suspension turbine expansion generator of zero leakage and System and method for | |
| JP5917324B2 (en) | Turbine and turbine operating method | |
| US20170191482A1 (en) | Systems and Methods for Balancing Thrust Loads in a Heat Engine System | |
| US20150330261A1 (en) | Waste Heat Recovery Systems Having Magnetic Liquid Seals | |
| US10344608B2 (en) | Seal arrangement in a turbine and method for confining the operating fluid | |
| RU2009113614A (en) | RECOVERY DEVICE | |
| US10584709B2 (en) | Electrically heated balance piston seal | |
| CN103547771A (en) | Apparatus and process for generation of energy by organic rankine cycle | |
| WO2019182667A1 (en) | Closed cycle heat engine federally sponsored research | |
| CN104481620A (en) | Organic working medium radial inflow turbine power generation device | |
| US9228588B2 (en) | Turbomachine component temperature control | |
| CN105927491B (en) | Natural gas differential pressure power generation and energy cascade utilization coupling system and application method | |
| CN205840927U (en) | A kind of turbine power generation unit with supercritical carbon dioxide as working medium | |
| US9039349B2 (en) | Turbocompressor and system for a supercritical-fluid cycle | |
| CN113790089A (en) | Low-temperature waste heat power generation system | |
| CN205677676U (en) | Semi-enclosed organic Rankine bottoming cycle turbo-expander | |
| CN102808661B (en) | Axial-flow type generator set utilizing organic rankine cycle (ORC) | |
| CN104948300A (en) | Combustion gas turbine | |
| CN105863763B (en) | Utilize the shielding expanding machine of organic rankie cycle generating | |
| CN204267116U (en) | A kind of organic working medium radial-inward-flow turbine electricity generating device | |
| CN105804807A (en) | Semi-closed organic Rankine cycle turbo expander | |
| US20180328210A1 (en) | Super-Critical C02 Expander |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160727 |
|
| RJ01 | Rejection of invention patent application after publication |