CN111396197A - Air separator of gas turbine - Google Patents
Air separator of gas turbine Download PDFInfo
- Publication number
- CN111396197A CN111396197A CN202010280848.XA CN202010280848A CN111396197A CN 111396197 A CN111396197 A CN 111396197A CN 202010280848 A CN202010280848 A CN 202010280848A CN 111396197 A CN111396197 A CN 111396197A
- Authority
- CN
- China
- Prior art keywords
- end cover
- shell
- impeller
- rotating shaft
- oil
- 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
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
- F02C7/06—Arrangements of bearings; Lubricating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
- B01D45/12—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces
- B01D45/14—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces generated by rotating vanes, discs, drums or brushes
Abstract
A gas turbine air separator relates to an air separator. The invention aims to solve the problems of large structure size and low separation efficiency of the conventional static oil-gas separator. The inner part of the shell is a cavity, the end cover is covered on the shell, the bearing of the rotating shaft is arranged in the shell and the end cover, and the shell is internally provided with an oil-gas mixture chamber; the right part of the end cover is provided with a lubricating oil collecting chamber; an air leading-out cavity is arranged in the rotating shaft; the impeller is rotatably sleeved on the rotating shaft, and the exhaust hole of the impeller is communicated with the air leading-out chamber; spiral channels are formed in the shell and the end cover which are positioned on the outer circumference of the impeller, the oil slinger is sleeved on the rotating shaft, the oil-gas mixture inlet pipe joint is installed on the shell and communicated with the mixture cavity, the air outlet pipe joint is installed at the outer end part of the end cover and communicated with the air leading-out cavity, and the lubricating oil outlet pipe joint is installed on the outer side wall of the end cover and communicated with the lubricating oil collecting cavity. The invention is used for gas-oil separation of the gas turbine.
Description
Technical Field
The invention relates to an air separator. In particular to a dynamic oil-gas separation device which can effectively separate out lubricating oil in an oil-gas mixture of a bearing cavity of a gas turbine, thereby effectively reducing the consumption of the lubricating oil and meeting the ventilation requirement of the bearing cavity of the gas turbine. Belongs to the technical field of gas turbines.
Background
Since the seventies of the twentieth century, the gas turbine has the characteristics of small volume, high power density, quick start, convenient maintenance and the like due to the superior performance of the gas turbine, and is widely applied to the fields of industrial peak shaving power generation, compressed natural gas conveying pipelines, offshore platforms, fuel-steam combined cycle power stations and the like.
The gas turbine is used for mechanical driving or power generation, and consists of a gas compressor, a combustion chamber, a turbine and an auxiliary system, and can be regarded as a high-speed power rotating machine, wherein air is continuously compressed in the gas compressor, flows into the combustion chamber for heating, continuously generates gas with certain pressure and temperature, then flows into the turbine for expansion and work, and converts part of heat energy into mechanical energy. Any single rotor rotating at high speed is supported by at least 2 main bearings to keep the rotor rotating at high speed in normal working condition, and the main bearings generate a large amount of heat during working, and the heat is usually taken away by adopting a method of lubricating by spraying lubricating oil. Reliable operation of the gas turbine is therefore highly dependent on the quality of the lubrication system. The lubricating system is used for pumping lubricating oil to the working surfaces of the main bearing and the meshing gear by the lubricating oil supply pump, taking away friction heat generated under high-speed rotation and heat transferred by surrounding high-temperature parts to maintain the normal temperature state of the main bearing and the meshing gear, and forming a continuous oil film between a roller path and a roller of the main bearing and between meshed gear surfaces so as to play a role in liquid lubrication. The lubricating oil in the bearing cavity is ensured not to leak by introducing the interstage through-flow gas of the gas compressor in front of the sealing device of the bearing cavity, and the lubricating oil is heated and volatilized due to the heat transfer of the bearing, the wall surface of the bearing cavity, the shaft, the convection heat exchange of compressed air and the heat radiation of the bearing cavity and is mixed with the through-flow gas leaked in through the sealing device to form an oil-gas mixture (hereinafter referred to as oil-gas) with certain temperature and pressure. In order to ensure the pressure of the lubricating oil cavities, a vent is arranged above each lubricating oil cavity, and oil gas is discharged to the atmosphere through the vent. In order to reduce the consumption of the lubricating oil, an air separator is arranged on the ventilation path to separate the lubricating oil in the oil gas and return the oil gas to the oil tank, and the air is exhausted to the atmosphere. The prior static oil-gas separator (the principle is filter element separation) can realize the separation of air and lubricating oil, but has the problems of large structural size and low separation efficiency.
Disclosure of Invention
The invention aims to solve the problems of large structure size and low separation efficiency of the conventional static oil-gas separator. Further provided is a gas turbine air separator.
The technical scheme of the invention is as follows: a gas turbine air separator comprises a shell, an oil-gas mixture inlet pipe joint, a rotating shaft, an impeller, an oil retainer, an end cover, an air outlet pipe joint and a lubricating oil outlet pipe joint, wherein the shell is internally provided with a cavity; the right part of the end cover is provided with a lubricating oil collecting chamber b; an air leading-out cavity c is arranged in the rotating shaft; the impeller is sleeved on the rotating shaft, and is provided with an exhaust hole which is communicated with the air leading-out chamber c; spiral channels are formed in the shell and the end cover which are located on the outer circumference of the impeller, the oil slinger is sleeved on the rotating shaft and located between the tail end portion of the impeller and the end portion of the inner side wall of the end cover, the oil-gas mixture inlet pipe joint is installed on the shell and communicated with the mixture chamber a, the air outlet pipe joint is installed at the outer end portion of the end cover and communicated with the air leading-out chamber c, and the lubricating oil outlet pipe joint is installed on the outer side wall of the end cover and communicated with the lubricating oil.
Furthermore, the device also comprises two bushings and two ball bearings, wherein the two bushings are respectively arranged in the shell and the end cover, and the rotating shaft is supported by the two ball bearings.
Further, the two bushings are detachably connected with the shell and the end cover through bolts.
Furthermore, an impeller limiting shoulder is arranged on the rotating shaft, and the head end of the impeller is abutted against the limiting shoulder.
Furthermore, the ball bearing further comprises a limiting ring, and the limiting ring is sleeved between the ball bearing and the limiting shoulder.
Further, the impeller comprises a cylinder and a plurality of blades, the blades are installed on the cylinder along the radial direction of the cylinder, and a window is arranged between every two adjacent blades.
Further, the shell and the end cover are detachably connected through bolts.
Furthermore, the bearing device also comprises a bearing retainer ring, a baffle ring and a lubricating oil sealing ring, wherein the bearing retainer ring and the baffle ring are sequentially sleeved on the rotating shaft and positioned at the outer end of the ball bearing in the end cover, and the lubricating oil sealing ring is arranged between the bushing and the baffle ring.
Compared with the prior art, the invention has the following effects:
in order to reduce the consumption of lubricating oil, an air separator is arranged on a ventilation path to separate the lubricating oil from oil gas and return the oil to an oil tank, and air is exhausted to the atmosphere.
The air separator adopts the rotating centrifugal separation lubricating oil, and has the advantages of high separation efficiency, small weight and size, impact vibration resistance and high reliability.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Detailed Description
The first embodiment is as follows: the embodiment is described with reference to fig. 1, the gas turbine air separator of the embodiment includes a casing 1, an inlet pipe joint 3, a rotating shaft 4, an impeller 5, an oil slinger 6, an end cover 7, an air outlet pipe joint 8 and a lubricating oil outlet pipe joint 12, the casing 1 is internally provided with a cavity, the end cover 7 is covered on the casing 1, the rotating shaft 4 is installed in a support of the casing 1 and the end cover 7, and a mixture chamber a is arranged in the casing 1; the right part of the end cover 7 is provided with a lubricating oil collecting chamber b; an air leading-out chamber c is arranged in the rotating shaft 4; the impeller 5 is sleeved on the rotating shaft 4, an exhaust hole 5-1 is formed in the impeller 5, and the exhaust hole 5-1 is communicated with the air leading-out chamber c; spiral channels are formed in the shell 1 and the end cover 7 which are located on the outer circumference of the impeller 5, the oil slinger 6 is sleeved on the rotating shaft 4 and located between the tail end portion of the impeller 5 and the end portion of the inner side wall of the end cover 7, the oil-gas mixture inlet pipe joint 3 is installed on the shell 1 and communicated with the mixture chamber a, the air outlet pipe joint 8 is installed at the outer end portion of the end cover 7 and communicated with the air leading-out chamber c, and the lubricating oil outlet pipe joint 12 is installed on the outer side wall of the end cover 7 and communicated with the lubricating oil.
The casing 1 and the upper cover 7 of the present embodiment have coaxial cylindrical holes, and the cylindrical inner surfaces of the casing 1 and the upper cover 7 have spiral grooves for collecting oil splashed by the impeller blades.
Nuts 9 are provided at both ends of the rotating shaft 4 in this embodiment.
The second embodiment is as follows: the present embodiment is described with reference to fig. 1, and further includes two bushings 2 and two ball bearings 13, the two bushings 2 are respectively installed in the housing 1 and the end cover 7, and the rotating shaft 4 is supported by the two ball bearings. Other components and connections are the same as in the first embodiment.
The oil-gas mixture of this embodiment can guarantee lubricated air separator's ball bearing, is convenient for improve ball bearing's life, and the pivot rotates more in a flexible way simultaneously.
The third concrete implementation mode: referring to fig. 1, the present embodiment will be described, and the two bushings 2 of the present embodiment are detachably connected to the housing 1 and the end cover 7 by bolts. So set up, the simple to operate is convenient for. Other compositions and connections are the same as in the first or second embodiments.
The fourth concrete implementation mode: referring to fig. 1, the present embodiment is described, in which an impeller limit shoulder 4-1 is provided on the rotating shaft 4, and the head end of the impeller 5 abuts against the limit shoulder 4-1. So set up, this spacing circular bead is not only convenient for adjust impeller 5's mounted position, still is convenient for spacing ball bearing and bush. Other compositions and connection relationships are the same as in the first, second or third embodiment.
The fifth concrete implementation mode: referring to fig. 1, the embodiment further includes a limit ring 14, and the limit ring 14 is sleeved between the ball bearing 13 and the limit shoulder 4-1. So set up, be convenient for adjust spacing circular bead and ball bearing between the clearance. Other compositions and connection relationships are the same as those in the first, second, third or fourth embodiment.
The sixth specific implementation mode: referring to fig. 1, the impeller 5 of the present embodiment includes a cylindrical body and a plurality of blades, the plurality of blades are mounted on the cylindrical body in a radial direction of the cylindrical body, and a window is provided between two adjacent blades. So set up, be convenient for with external other system and component connection, guarantee the smooth introduction of air. Other compositions and connection relationships are the same as in the first, second, third, fourth or fifth embodiment.
The impeller of this embodiment is a complete cylinder with outer radial blades with windows between them. The impeller and the rotating shaft are supported by two ball bearings.
In the embodiment, the tail part of the impeller is provided with an internal spline groove, and the tail part is connected with an elastic shaft of the impeller transmission device through the spline groove.
The seventh embodiment: the present embodiment will be described with reference to fig. 1, and the housing 1 and the end cap 7 of the present embodiment are detachably connected by bolts. So set up, be convenient for overhaul and maintain air separator, it is convenient to install simultaneously and dismantle. Other compositions and connection relationships are the same as in the first, second, third, fourth, fifth or sixth embodiment.
The specific implementation mode is eight: the embodiment is described with reference to fig. 1, and the embodiment further includes a retainer ring 15, a baffle ring 10 and an oil seal ring 11, the retainer ring 15 and the baffle ring 10 are sequentially sleeved on the rotating shaft 4 and located at the outer end of the ball bearing 13 in the end cover 7, and the oil seal ring 11 is arranged between the bushing 2 and the baffle ring 10. So set up, sealed effectual. Other compositions and connection relationships are the same as those of embodiment one, two, three, four, five, six or seven.
The working principle of the invention is explained in connection with fig. 1:
when the gas turbine works, the oil-gas mixture enters the chamber a, the impeller 5 rotates and throws lubricating oil in the oil-gas to the inner surfaces of the shell 1 and the end cover 7 under the action of centrifugal force, and the lubricating oil in the oil-gas mixture is separated from air. The oil enters the helical channels of the casing 1 and the upper cover 7, is guided along the channels into the annular chamber b and is drawn to the oil return manifold via the oil outlet connection 12. Air flows into the exhaust hole 5-1 through the window on the impeller 5 and flows into the exhaust pipe through the air outlet pipe joint 8.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (8)
1. A gas turbine air separator, characterized by: it comprises a shell (1), an oil-gas mixture inlet pipe joint (3), a rotating shaft (4), an impeller (5), an oil retainer ring (6), an end cover (7), an air outlet pipe joint (8) and a lubricating oil outlet pipe joint (12),
the inner part of the shell (1) is a cavity, an end cover (7) is covered on the shell (1), a rotating shaft (4) is arranged in a support of the shell (1) and the end cover (7), and an oil-gas mixture chamber (a) is arranged in the shell (1); the right part of the end cover (7) is provided with a lubricating oil collecting chamber (b); an air leading-out chamber (c) is arranged in the rotating shaft (4); the impeller (5) is sleeved on the rotating shaft (4), the impeller (5) is provided with an exhaust hole (5-1), and the exhaust hole (5-1) is communicated with the air outlet chamber (c); spiral channels are formed in a shell (1) and an end cover (7) which are positioned on the outer circumference of an impeller (5), an oil slinger (6) is sleeved on a rotating shaft (4) and positioned between the tail end of the impeller (5) and the end part of the inner side wall of the end cover (7), an oil-gas mixture inlet pipe joint (3) is installed on the shell (1) and communicated with a mixture chamber (a), an air outlet pipe joint (8) is installed at the outer end part of the end cover (7) and communicated with an air leading-out chamber (c), and a lubricating oil outlet pipe joint (12) is installed on the outer side wall of the end cover (7) and communicated with a lubricating oil collecting chamber (b).
2. A gas turbine air separator as in claim 1 wherein: the novel bearing is characterized by further comprising two bushings (2) and two ball bearings (13), wherein the two bushings (2) are respectively installed in the shell (1) and the end cover (7), and the rotating shaft (4) is supported through the two ball bearings.
3. A gas turbine air separator as in claim 2 wherein: the two bushings (2) are detachably connected with the shell (1) and the end cover (7) through bolts.
4. A gas turbine air separator as in claim 3 wherein: an impeller limiting shoulder (4-1) is arranged on the rotating shaft (4), and the head end of the impeller (5) is abutted against the limiting shoulder (4-1).
5. A gas turbine air separator as in claim 4 wherein: the ball bearing further comprises a limiting ring (14), and the limiting ring (14) is sleeved between the ball bearing (13) and the limiting shoulder (4-1).
6. A gas turbine air separator as in claim 5 wherein: the impeller (5) comprises a cylinder and a plurality of blades, the blades are arranged on the cylinder along the radial direction of the cylinder, and a window is arranged between every two adjacent blades.
7. A gas turbine air separator as in claim 6 wherein: the shell (1) and the end cover (7) are detachably connected through bolts.
8. A gas turbine air separator as in claim 1 or 7 wherein: the novel bearing assembly further comprises a bearing retainer ring (15), a baffle ring (10) and a lubricating oil sealing ring (11), wherein the bearing retainer ring (15) and the baffle ring (10) are sequentially sleeved on the rotating shaft (4) and located at the outer end of the ball bearing (13) in the end cover (7), and the lubricating oil sealing ring (11) is arranged between the bushing (2) and the baffle ring (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010280848.XA CN111396197A (en) | 2020-04-10 | 2020-04-10 | Air separator of gas turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010280848.XA CN111396197A (en) | 2020-04-10 | 2020-04-10 | Air separator of gas turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111396197A true CN111396197A (en) | 2020-07-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010280848.XA Pending CN111396197A (en) | 2020-04-10 | 2020-04-10 | Air separator of gas turbine |
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| CN (1) | CN111396197A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112392563A (en) * | 2020-11-16 | 2021-02-23 | 四川航天中天动力装备有限责任公司 | High-rotating-speed oil-gas separator for turbine engine |
-
2020
- 2020-04-10 CN CN202010280848.XA patent/CN111396197A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112392563A (en) * | 2020-11-16 | 2021-02-23 | 四川航天中天动力装备有限责任公司 | High-rotating-speed oil-gas separator for turbine engine |
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