CN111396137A - High-efficient axial compressor turbine suitable for inert mixed working medium - Google Patents
High-efficient axial compressor turbine suitable for inert mixed working medium Download PDFInfo
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- CN111396137A CN111396137A CN202010352948.9A CN202010352948A CN111396137A CN 111396137 A CN111396137 A CN 111396137A CN 202010352948 A CN202010352948 A CN 202010352948A CN 111396137 A CN111396137 A CN 111396137A
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- Prior art keywords
- turbine
- inert mixed
- rotor
- casing
- working medium
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- 238000007789 sealing Methods 0.000 claims description 17
- 239000002184 metal Substances 0.000 claims description 14
- 230000006835 compression Effects 0.000 claims 1
- 238000007906 compression Methods 0.000 claims 1
- 238000006243 chemical reaction Methods 0.000 abstract description 5
- 239000007789 gas Substances 0.000 description 20
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000003570 air Substances 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Images
Classifications
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- 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
- F01D1/00—Non-positive-displacement machines or engines, e.g. steam turbines
- F01D1/02—Non-positive-displacement machines or engines, e.g. steam turbines with stationary working-fluid guiding means and bladed or like rotor, e.g. multi-bladed impulse steam turbines
- F01D1/04—Non-positive-displacement machines or engines, e.g. steam turbines with stationary working-fluid guiding means and bladed or like rotor, e.g. multi-bladed impulse steam turbines traversed by the working-fluid substantially axially
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- 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
- F01D11/003—Preventing or minimising internal leakage of working-fluid, e.g. between stages by packing rings; Mechanical seals
-
- 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
- F01D25/24—Casings; Casing parts, e.g. diaphragms, casing fastenings
- F01D25/243—Flange connections; Bolting arrangements
-
- 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
- F01D25/24—Casings; Casing parts, e.g. diaphragms, casing fastenings
- F01D25/246—Fastening of diaphragms or stator-rings
-
- 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
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/02—Blade-carrying members, e.g. rotors
- F01D5/021—Blade-carrying members, e.g. rotors for flow machines or engines with only one axial stage
-
- 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
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/02—Blade-carrying members, e.g. rotors
- F01D5/025—Fixing blade carrying members on shafts
-
- 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
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/12—Blades
- F01D5/14—Form or construction
- F01D5/141—Shape, i.e. outer, aerodynamic form
-
- 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
- F01D9/00—Stators
- F01D9/02—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles
Abstract
The invention discloses a high-efficiency axial flow turbine suitable for inert mixed working media, which comprises an air inlet and exhaust system and a rotor system; the rotor system is arranged in the air intake and exhaust system and rotates in the air intake and exhaust system; the air inlet and exhaust system comprises a turbine air inlet casing (1), a turbine guide device (6) and a turbine exhaust casing (10), the turbine air inlet casing (1) and the turbine exhaust casing (10) are respectively and fixedly connected to the left end and the right end of the turbine guide device (6), and the expanded gas working medium in the air inlet and exhaust system is inert mixed gas. According to the invention, the guide device, the blade pneumatic profile and the airflow channel of the rotor are designed according to the working medium characteristics of the inert mixed gas, and the pressure of the inert mixed gas with a certain flow can be reduced to 1/1.5-1/2.7 of the initial pressure, the rotating speed of 30000 r/min-70000 r/min and the energy conversion efficiency of 89% through the structural design of the turbine guide device and the turbine rotor.
Description
Technical Field
The invention belongs to the technical field of turbines, and relates to a high-efficiency axial flow turbine suitable for inert mixed working media.
Background
Turbines are a type of device that converts the thermal energy of a gas into kinetic and mechanical energy, thereby obtaining cryogenic gas or outputting shaft work. An axial flow turbine is a type of turbine in which the direction of airflow is along the direction of the axis of rotation of the turbine. A typical gas axial turbine consists of a turbine guide and a turbine rotor. The turbine guiding device converts high-temperature high-pressure low-speed gas into high-speed gas, provides a proper inlet airflow angle for the turbine rotor, and the high-speed gas blows the turbine rotor to rotate to output shaft work to obtain relatively low-temperature gas, so that energy conversion is completed.
The working medium of the general axial flow turbine is air, gas, carbon dioxide and the like, and inert gas such as helium and the like is also used.
When the general axial flow turbine directly uses the inert mixed gas, the guide device, the blade aerodynamic profile of the rotor and the airflow channel have certain flow separation, energy loss is generated, and therefore energy conversion efficiency is low.
Disclosure of Invention
Objects of the invention
The purpose of the invention is: the efficient axial flow turbine suitable for the inert mixed working medium is characterized in that a guide device, a blade pneumatic profile and an air flow channel of a rotor are designed according to the working medium characteristics of the inert mixed gas, and through the structural design of the turbine guide device and the turbine rotor, shaft work is obtained, and the energy conversion of the inert mixed gas is realized.
(II) technical scheme
In order to solve the technical problem, the invention provides a high-efficiency axial flow turbine suitable for inert mixed working media, which comprises an air inlet and exhaust system and a rotor system; the rotor system is arranged in the air intake and exhaust system and rotates in the air intake and exhaust system; the air intake and exhaust system comprises a turbine air intake casing 1, a turbine guider 6 and a turbine exhaust casing 10, wherein the turbine air intake casing 1 and the turbine exhaust casing 10 are respectively and fixedly connected to the left end and the right end of the turbine guider 6, and the expanded gas working medium in the air intake and exhaust system is inert mixed gas.
Wherein, the connection ends of the turbine air inlet casing 1 and the turbine guider 6 are connected through a first bolt 2, a first nut 3 and a first gasket 4.
A groove is formed in the end face of the right side of the turbine air inlet casing 1, a first metal O-shaped sealing ring 5 is installed on the groove, the turbine air inlet casing 1 is inserted into a turbine guider 6 from the left side, and the metal O-shaped sealing ring 3 is centered and compressed through a spigot so as to seal inert mixed gas.
Wherein, the connecting ends of the turbine guider 6 and the turbine exhaust casing 10 are connected through a second bolt 7, a second nut 8 and a second gasket 9.
The left end face of the turbine exhaust casing 10 is provided with a groove for mounting a second metal O-shaped sealing ring 11, the turbine exhaust casing 10 is inserted into the turbine guider 6 from the right side, and the second metal O-shaped sealing ring 11 is centered and compressed through a spigot to realize sealing.
The rotor system comprises a turbine rotor 12, a locking nut 13 and a turbine shaft 14, wherein the turbine rotor 12 is inserted into the turbine shaft 14 from the right side, axial positioning is achieved through a step on the turbine shaft 14, and the locking nut 13 presses the turbine rotor 12 through external threads at the right end of the turbine shaft 14 to form the rotor system.
Wherein the number of blades of the turbine guide 6 and the turbine rotor 12 is 49 and 79, respectively.
(III) advantageous effects
According to the efficient axial flow turbine suitable for the inert mixed working medium, the guide device, the blade pneumatic profile and the airflow channel of the rotor are designed according to the characteristics of the inert mixed gas working medium, and through the structural design of the turbine guide device and the turbine rotor, the pressure of the inert mixed gas with a certain flow can be reduced to 1/1.5-1/2.7 of the initial pressure, the rotating speed is 30000 r/min-70000 r/min, and the energy conversion efficiency is 89%.
Drawings
FIG. 1 is a schematic structural diagram of a high-efficiency axial flow turbine suitable for inert mixed working media.
FIG. 2 is a turbine nozzle and turbine rotor flowpath profile and airfoil coordinate system.
In the figure, 1 turbine inlet casing, 2 first bolt, 3 first nut, 4 first gasket, 5 first metal O-shaped sealing ring, 6 turbine guider, 7 second bolt, 8 second nut, 9 second gasket, 10 turbine outlet casing, 11 second metal O-shaped sealing ring, 12 turbine rotor, 13 locking nut and 14 turbine shaft.
Detailed Description
In order to make the objects, contents, and advantages of the present invention clearer, the following detailed description of the embodiments of the present invention will be made in conjunction with the accompanying drawings and examples.
As shown in FIG. 1, the high-efficiency axial flow turbine suitable for inert mixed working media comprises an air inlet and exhaust system and a rotor system; the rotor system is arranged in the air intake and exhaust system and rotates in the air intake and exhaust system; the air intake and exhaust system comprises a turbine air intake casing 1, a turbine guider 6 and a turbine exhaust casing 10, wherein the turbine air intake casing 1 and the turbine exhaust casing 10 are respectively and fixedly connected to the left end and the right end of the turbine guider 6, and the expanded gas working medium in the air intake and exhaust system is inert mixed gas.
A first metal O-shaped sealing ring 5 is arranged on the right end face of a turbine air inlet casing 1 in a groove mode, the turbine air inlet casing 1 is inserted into a turbine guider 6 from the left side, is centered through a spigot, is connected to the turbine guider 6 through a first bolt 2, a first nut 3 and a first gasket 4, and compresses the first metal O-shaped sealing ring 5 to seal inert mixed gas. A groove is formed in the left end face of the turbine exhaust casing 10, a second metal O-shaped sealing ring 11 is installed, the turbine exhaust casing 10 is inserted into the turbine guider 6 from the right side, is centered through a spigot, is connected to the turbine guider through a second bolt 7, a second nut 8 and a second gasket 9, and compresses the second metal O-shaped sealing ring 11 to achieve sealing.
The rotor system comprises a turbine rotor 12, a locking nut 13 and a turbine shaft 14, wherein the turbine rotor 12 is inserted into the turbine shaft 14 from the right side, the axial positioning is realized through a step on the turbine shaft 14, and the locking nut 13 presses the turbine rotor 12 through external threads at the right end of the turbine shaft 14 to form the rotor system.
The invention designs the flow passage profiles and the blade profiles of the turbine guider and the turbine rotor according to the characteristics of the inert mixed gas working medium, and the blade numbers of the turbine guider 6 and the turbine rotor 12 are respectively 49 and 79.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (7)
1. The high-efficiency axial flow turbine suitable for the inert mixed working medium is characterized by comprising an air inlet and exhaust system and a rotor system; the rotor system is arranged in the air intake and exhaust system and rotates in the air intake and exhaust system; the air inlet and exhaust system comprises a turbine air inlet casing (1), a turbine guide device (6) and a turbine exhaust casing (10), the turbine air inlet casing (1) and the turbine exhaust casing (10) are respectively and fixedly connected to the left end and the right end of the turbine guide device (6), and the expanded gas working medium in the air inlet and exhaust system is inert mixed gas.
2. The high-efficiency axial flow turbine suitable for the inert mixed working medium as claimed in claim 1, wherein the connection ends of the turbine air inlet casing (1) and the turbine guide (6) are connected through a first bolt (2), a first nut (3) and a first gasket (4).
3. The high-efficiency axial flow turbine suitable for the inert mixed working medium as claimed in claim 2, wherein the turbine inlet casing (1) is provided with a groove on the right end surface thereof with a first metal O-shaped sealing ring (5), the turbine inlet casing (1) is inserted into the turbine guider (6) from the left side, and the metal O-shaped sealing ring (3) is centered and compressed through the spigot so as to seal the inert mixed gas.
4. The high-efficiency axial flow turbine suitable for the inert mixed working medium is characterized in that the connecting ends of the turbine guider (6) and the turbine exhaust casing (10) are connected through a second bolt (7), a second nut (8) and a second gasket (9).
5. The high-efficiency axial flow turbine suitable for the inert mixed working medium is characterized in that a second metal O-shaped sealing ring (11) is arranged on the left end face of the turbine exhaust casing (10) in a groove mode, the turbine exhaust casing (10) is inserted into the turbine guider (6) from the right side, and sealing is achieved through the spigot centering and the compression of the second metal O-shaped sealing ring (11).
6. The high-efficiency axial flow turbine suitable for the inert mixed working medium is characterized in that the rotor system comprises a turbine rotor (12), a locking nut (13) and a turbine shaft (14), the turbine rotor (12) is inserted into the turbine shaft (14) from the right side, the axial positioning is realized through a step on the turbine shaft (14), and the locking nut (13) presses the turbine rotor (12) through the external thread at the right end of the turbine shaft (14) to form the rotor system.
7. The high-efficiency axial turbine suitable for inert mixed working media according to claim 6, characterized in that the number of blades of the turbine guider (6) and the turbine rotor (12) is 49 and 79 respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010352948.9A CN111396137A (en) | 2020-04-29 | 2020-04-29 | High-efficient axial compressor turbine suitable for inert mixed working medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010352948.9A CN111396137A (en) | 2020-04-29 | 2020-04-29 | High-efficient axial compressor turbine suitable for inert mixed working medium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111396137A true CN111396137A (en) | 2020-07-10 |
Family
ID=71437259
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010352948.9A Pending CN111396137A (en) | 2020-04-29 | 2020-04-29 | High-efficient axial compressor turbine suitable for inert mixed working medium |
Country Status (1)
| Country | Link |
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| CN (1) | CN111396137A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112177689A (en) * | 2020-09-29 | 2021-01-05 | 中国航发湖南动力机械研究所 | Turbine guider positioning structure of engine and engine |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH338328A (en) * | 1956-03-28 | 1959-05-15 | Napier & Son Ltd | Axial flow turbo machine |
| CN206753723U (en) * | 2017-05-11 | 2017-12-15 | 大连依勒斯涡轮增压技术有限公司 | A kind of compact two-stage turbine machine |
| CN208966375U (en) * | 2018-10-26 | 2019-06-11 | 中国船舶重工集团公司第七0三研究所 | A kind of helium turbine stators structure |
-
2020
- 2020-04-29 CN CN202010352948.9A patent/CN111396137A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH338328A (en) * | 1956-03-28 | 1959-05-15 | Napier & Son Ltd | Axial flow turbo machine |
| CN206753723U (en) * | 2017-05-11 | 2017-12-15 | 大连依勒斯涡轮增压技术有限公司 | A kind of compact two-stage turbine machine |
| CN208966375U (en) * | 2018-10-26 | 2019-06-11 | 中国船舶重工集团公司第七0三研究所 | A kind of helium turbine stators structure |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112177689A (en) * | 2020-09-29 | 2021-01-05 | 中国航发湖南动力机械研究所 | Turbine guider positioning structure of engine and engine |
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Application publication date: 20200710 |