CN116428058A - Hidden air inlet system of marine miniature gas turbine - Google Patents
Hidden air inlet system of marine miniature gas turbine Download PDFInfo
- Publication number
- CN116428058A CN116428058A CN202310428117.9A CN202310428117A CN116428058A CN 116428058 A CN116428058 A CN 116428058A CN 202310428117 A CN202310428117 A CN 202310428117A CN 116428058 A CN116428058 A CN 116428058A
- Authority
- CN
- China
- Prior art keywords
- air supply
- bearing
- external tooth
- gas turbine
- air
- 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
- 230000005540 biological transmission Effects 0.000 claims abstract description 9
- 238000005192 partition Methods 0.000 claims description 4
- 230000003584 silencer Effects 0.000 claims description 4
- 239000004020 conductor Substances 0.000 claims description 2
- 238000001816 cooling Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 4
- 238000005452 bending Methods 0.000 abstract description 3
- 238000001914 filtration Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000003245 coal Substances 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000030279 gene silencing Effects 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 150000003568 thioethers Chemical class 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
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- 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
- F02C7/04—Air intakes for gas-turbine plants or jet-propulsion plants
- F02C7/057—Control or regulation
-
- 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
- F02C7/04—Air intakes for gas-turbine plants or jet-propulsion plants
- F02C7/045—Air intakes for gas-turbine plants or jet-propulsion plants having provisions for noise suppression
-
- 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
- F02C7/04—Air intakes for gas-turbine plants or jet-propulsion plants
- F02C7/05—Air intakes for gas-turbine plants or jet-propulsion plants having provisions for obviating the penetration of damaging objects or particles
- F02C7/055—Air intakes for gas-turbine plants or jet-propulsion plants having provisions for obviating the penetration of damaging objects or particles with intake grids, screens or guards
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention aims to provide a hidden air inlet system of a marine micro gas turbine, which comprises an air supply unit, wherein the air supply unit comprises an air supply pipeline, a motor and a connecting transmission mechanism, the connecting transmission mechanism comprises an outer ring of an external tooth bearing, a pinion, bearing rollers, a bearing retainer and an inner ring of the external tooth bearing, the motor is connected with the pinion, the pinion is meshed with the outer ring of the external tooth bearing, and the bearing rollers are arranged between the outer ring of the external tooth bearing and the inner ring of the external tooth bearing; the air supply units comprise five groups which are sequentially connected, and two air supply pipelines of adjacent air supply units are connected through an outer ring and an inner ring of an external tooth bearing of one air supply unit. The invention has more flexible air inflow adjustment, adjusts the optimal air inflow according to different working conditions, ensures that the gas filtering effect is optimal when working in the optimal state, prolongs the service life of the engine, and improves the efficiency of the engine by bending a multi-section pipeline and cooling the gas by a hose outside the pipeline.
Description
Technical Field
The invention relates to an air inlet system of a gas turbine, in particular to an air inlet system of a miniature gas turbine.
Background
In recent years, gas turbines have been increasingly used in the field of ships such as large ships and air cushion ships as a new generation power plant. Typically, gas turbines are designed under standard operating conditions. However, its actual performance parameters are highly affected by ambient temperature. The output of the gas turbine unit is reduced along with the rise of the atmospheric temperature, the efficiency of the combined cycle is reduced, the power generation coal consumption is increased along with the output of the combined cycle, and the method for improving the performance of the unit is many in practical application, such as steam/water reinjection, air inlet cooling, fuel preheating and the like. Wherein the addition of an inlet air cooling device in front of the gas turbine air supply channel is considered to be the most effective, reliable and safe method by reducing the inlet air temperature of the gas turbine. The marine gas turbine can meet different use scenes, different use scenes can correspond to different air inflow, and the existing filter and the air supply pipeline design thereof cannot be suitable for various use scenes
At the same time, the purification and separation of the gas turbine inlet air is a major concern for designers, such as the removal of sand and salt mist from the inlet air and the treatment of contaminants such as sulfides in the air. The more advanced gas turbines are designed, the higher the sensitivity of the gas turbines to the quality of the air in the air, and in order to ensure the smoothness of the air in the air and the service life of the gas turbines, purification and separation devices are needed to be added into an air inlet system and an air system. The design of gas turbine air intake systems requires consideration of a variety of issues, and the stack of devices that address only a single issue makes the overall air intake system bulky.
Disclosure of Invention
The invention aims to provide a hidden air inlet system of a miniature marine gas turbine, which can adjust air inflow and heat exchange effect and enhance the silencing function.
The purpose of the invention is realized in the following way:
the invention relates to a hidden air inlet system of a marine miniature gas turbine, which is characterized in that: the device comprises an air supply unit, wherein the air supply unit comprises an air supply pipeline, a motor and a connecting transmission mechanism, the connecting transmission mechanism comprises an outer ring of an external tooth bearing, a pinion, a bearing roller, a bearing retainer and an inner ring of the external tooth bearing, the motor is connected with the pinion, the pinion is meshed with the outer ring of the external tooth bearing, and the bearing roller is arranged between the outer ring of the external tooth bearing and the inner ring of the external tooth bearing; the air supply units comprise five groups which are sequentially connected, and two air supply pipelines of adjacent air supply units are connected through an outer ring and an inner ring of an external tooth bearing of one air supply unit.
The invention may further include:
1. the air inlet ends of the five air supply units are provided with filters, and the air outlet ends are provided with silencers.
2. The filter comprises three layers of channels which are distributed from top to bottom, and the height ratio is 3:2:1.
3. the silencer comprises a bent pipe, wherein partition plates are arranged in the bent pipe at equal intervals, and the front ends of the partition plates are provided with sharp corner type current conductors with sharp corner angles being right angles.
4. When the air supply units do not work, the five air supply units are generally arranged in an S shape; when the air supply units work, each motor drives each pinion, and the relative rotation angle and the overall height of the adjacent air supply units are changed.
5. The air supply pipes of the five air supply units are sequentially enlarged.
6. The bearing roller is a cylindrical roller with the diameter of 6.25mm and the height of 11.2mm, and the included angle between the axis of the bearing roller and the axis of the bearing ring is 15 degrees.
The invention has the advantages that: the existing marine gas turbine air inlet system has the problems of poor air inlet quality, inflexible air inlet adjustment and the like. The invention adopts the multi-section vector control pipeline, and adjusts the height of the filter and the area of the air inlet, thereby adjusting the air inflow, bending of the multi-section pipeline can change the heat exchange effect of the pipeline, and the filter at the front end can remove sand dust and salt fog in the air inlet. The invention has more flexible air inflow adjustment, adjusts the optimal air inflow according to different working conditions, ensures that the gas filtering effect is optimal when working in the optimal state, prolongs the service life of the engine, and improves the efficiency of the engine by bending a multi-section pipeline and cooling the gas by a hose outside the pipeline.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of a connecting transmission mechanism
FIG. 3 is a schematic structural view of a third pipeline;
fig. 4 is a cross-sectional view of a muffler.
Detailed Description
The invention is described in more detail below, by way of example, with reference to the accompanying drawings:
referring to fig. 1-4, the hidden air inlet system of the marine micro gas turbine comprises a filter 1, an air supply pipeline 2, a muffler 3, a motor 4 and a connecting transmission mechanism 5. The motor 4 includes first pipeline motor 41, second pipeline motor, third pipeline motor, fourth pipeline motor, and its first pipeline motor 41 moment of torsion is minimum, and fourth pipeline motor moment of torsion is biggest, and the motor 4 moment of torsion of remaining motor is progressively increased along with the order, guarantees the motor 4 normal operating that is located the lower extreme, for solving the problem that traditional filter can not adjust the air input, filter 1 divide into three-layer passageway, top-down distributes, and the height ratio is 3:2:1, the air supply pipeline 2 adopts five sections of vector control pipelines with different sizes, and comprises a first pipeline, a second pipeline, a third pipeline 23, a fourth pipeline and a fifth pipeline, wherein the pipe diameter of the first pipeline is minimum, the pipe diameter of the fifth pipeline is maximum, the pipe diameters of other pipelines are sequentially increased, and a placing platform is connected to the pipelines and used for placing a motor 4.
The connecting transmission mechanism 5 comprises an external tooth bearing outer ring 51, a pinion 52, bearing rollers 53, a bearing retainer 54 and an external tooth bearing inner ring 55, two sections of pipelines are connected through the external tooth bearing outer ring 51, the bearing retainer 54 and the external tooth bearing inner ring 55, the interfaces of the external tooth bearing outer ring 51 and the external tooth bearing inner ring 55 are round and coincide with the axes of the pipelines, the bearing rollers are 6.25mm in diameter and 11.2mm in height of cylindrical rollers, the included angle between the axes of the cylindrical rollers and the axes of the pipelines is 15 degrees, the motor 41 is arranged on a placing platform, an air supply pipeline drives the external tooth bearing outer ring 51 to change the relative rotation angle between the pipelines through the pinion 52 arranged on the motor 41, meanwhile, the overall height of a filter is changed, the inlet of a lower-layer channel is blocked, and the air inflow is changed to meet the requirements of all working conditions.
In order to reduce the air intake noise of the micro gas turbine, the silencer 3 is additionally arranged between the air supply pipeline 2 and the micro gas turbine, the silencer 3 comprises an elbow pipe 31, baffle plates 32 and pointed-angle- type guide bodies 33, 5 baffle plates 32 are arranged in the elbow pipe 31 at equal intervals, and the front end of each baffle plate 32 is provided with the pointed-angle-type guide body 33 with a right angle.
The coolers are coated on the pipe bodies of the pipelines; the inner bearing ring of the pipeline is connected with the outer bearing ring of the inlet of the next pipeline; the outer bearing rings of the pipelines are connected with motors, and the motors drive the pipelines to rotate simultaneously to realize integral height adjustment; when the miniature gas turbine does not work, the gas supply pipeline is arranged in an s shape; when the micro gas turbine works, the motor drives each pipeline, the gas supply pipeline is in l-shaped arrangement, when the micro gas turbine is in different working conditions, the motor drives the gas supply pipeline to change the relative rotation angle between each pipeline, meanwhile, the whole height of the filter is changed, the inlet of the lower-layer channel is blocked, and the air inflow is changed to meet the requirements of each working condition.
The joint of the two pipeline bearing rings is round, and the axes are mutually overlapped.
The motor is connected to pipeline outer bearing circle, and motor torque gradually increases along with pipeline from first to fifth order, guarantees the motor normal operating that is located the lower extreme.
Claims (7)
1. A hidden air inlet system of a marine miniature gas turbine is characterized in that: the device comprises an air supply unit, wherein the air supply unit comprises an air supply pipeline, a motor and a connecting transmission mechanism, the connecting transmission mechanism comprises an outer ring of an external tooth bearing, a pinion, a bearing roller, a bearing retainer and an inner ring of the external tooth bearing, the motor is connected with the pinion, the pinion is meshed with the outer ring of the external tooth bearing, and the bearing roller is arranged between the outer ring of the external tooth bearing and the inner ring of the external tooth bearing; the air supply units comprise five groups which are sequentially connected, and two air supply pipelines of adjacent air supply units are connected through an outer ring and an inner ring of an external tooth bearing of one air supply unit.
2. The marine micro gas turbine hidden air intake system of claim 1, wherein: the air inlet ends of the five air supply units are provided with filters, and the air outlet ends are provided with silencers.
3. The marine micro gas turbine hidden air intake system of claim 2, wherein: the filter comprises three layers of channels which are distributed from top to bottom, and the height ratio is 3:2:1.
4. the marine micro gas turbine hidden air intake system of claim 2, wherein: the silencer comprises a bent pipe, wherein partition plates are arranged in the bent pipe at equal intervals, and the front ends of the partition plates are provided with sharp corner type current conductors with sharp corner angles being right angles.
5. The marine micro gas turbine hidden air intake system of claim 1, wherein: when the air supply units do not work, the five air supply units are generally arranged in an S shape; when the air supply units work, each motor drives each pinion, and the relative rotation angle and the overall height of the adjacent air supply units are changed.
6. The marine micro gas turbine hidden air intake system of claim 1, wherein: the air supply pipes of the five air supply units are sequentially enlarged.
7. The marine micro gas turbine hidden air intake system of claim 1, wherein: the bearing roller is a cylindrical roller with the diameter of 6.25mm and the height of 11.2mm, and the included angle between the axis of the bearing roller and the axis of the bearing ring is 15 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310428117.9A CN116428058A (en) | 2023-04-20 | 2023-04-20 | Hidden air inlet system of marine miniature gas turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310428117.9A CN116428058A (en) | 2023-04-20 | 2023-04-20 | Hidden air inlet system of marine miniature gas turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116428058A true CN116428058A (en) | 2023-07-14 |
Family
ID=87083072
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310428117.9A Pending CN116428058A (en) | 2023-04-20 | 2023-04-20 | Hidden air inlet system of marine miniature gas turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116428058A (en) |
-
2023
- 2023-04-20 CN CN202310428117.9A patent/CN116428058A/en active Pending
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