CN112267942B - Starting device for gas turbine - Google Patents
Starting device for gas turbine Download PDFInfo
- Publication number
- CN112267942B CN112267942B CN202011261276.7A CN202011261276A CN112267942B CN 112267942 B CN112267942 B CN 112267942B CN 202011261276 A CN202011261276 A CN 202011261276A CN 112267942 B CN112267942 B CN 112267942B
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- Prior art keywords
- tooth
- output
- bevel gear
- gas turbine
- shaft
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- 230000005540 biological transmission Effects 0.000 claims abstract description 57
- 230000008878 coupling Effects 0.000 claims abstract description 24
- 238000010168 coupling process Methods 0.000 claims abstract description 24
- 238000005859 coupling reaction Methods 0.000 claims abstract description 24
- 230000005570 vertical transmission Effects 0.000 claims abstract description 7
- 238000005461 lubrication Methods 0.000 description 2
- 239000007858 starting material Substances 0.000 description 2
- 241001584775 Tunga penetrans Species 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010622 cold drawing Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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
- F02C7/26—Starting; Ignition
-
- 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
- F02C7/26—Starting; Ignition
- F02C7/268—Starting drives for the rotor, acting directly on the rotor of the gas turbine to be started
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structure Of Transmissions (AREA)
- Retarders (AREA)
Abstract
A starting device for a gas turbine solves the problems that the existing starting device for the gas turbine cannot realize space vertical transmission and cannot convert the external torque characteristic of a variable frequency motor into the optimal output characteristic suitable for starting of the gas turbine, and belongs to the technical field of starting of the gas turbine. The invention comprises two variable-frequency starting motors, an external transmission device and a transmission shafting; the external transmission case comprises an output bevel gear, an output spline shaft, a tooth sleeve and an input bevel gear; the transmission shafting comprises a first tooth-type half coupling, a second tooth-type half coupling and a spline shaft; when the gas turbine needs to be started, torque of the variable frequency starting motors is transmitted to an input bevel gear through two variable frequency starting motors arranged on two sides of an external transmission device, an output bevel gear is driven to be in spline fit with an output spline shaft, the torque is transmitted to a tooth sleeve, the tooth sleeve is connected with a first tooth type half coupling, a second tooth type half coupling and a spline shaft, and the torque is transmitted to a lower transmission box through the spline shaft.
Description
Technical Field
The invention relates to a starting device of a gas turbine, and belongs to the technical field of starting of gas turbines.
Background
The gas turbine itself is not powered during start-up, and an additional starter must be provided to provide power-driven start-up of the gas turbine. Under the control of the control system, the starting device helps the gas turbine to rotate, ignite and accelerate according to a starting program, and finally the starting of the gas turbine is completed.
Because of the variety of gas turbine forms, different spatial structures and arrangements, starting devices are different, and generally comprise a motor, the spatial structure cannot realize spatial vertical transmission and cannot convert the torque external characteristics of the variable frequency motor into optimal output characteristics suitable for starting the gas turbine.
Disclosure of Invention
Aiming at the problems that the existing gas turbine starting device cannot realize space vertical transmission and cannot convert the external torque characteristic of a variable frequency motor into the optimal output characteristic suitable for starting a gas turbine, the invention provides a starting device for the gas turbine.
The invention relates to a starting device for a gas turbine, which comprises two variable-frequency starting motors, an external transmission device 2 and a transmission shaft system 4;
The external transmission device 2 is arranged outside the two variable-frequency starting motors and is linked with the two variable-frequency starting motors, so that the output torque of the two variable-frequency starting motors is transmitted to the external transmission device 2, and the external transmission device 2 transmits the torque of the two variable-frequency starting motors to the transmission box 12 at the lower part of the gas turbine through the transmission shafting 4, so that the vertical transmission of the input and output space is realized;
The external transmission case 2 comprises an output bevel gear 5, an output spline shaft 6, a tooth sleeve 7 and an input bevel gear 17;
The torque output shafts of the two variable-frequency starting motors are connected with the axle center of an input bevel gear 17, the input bevel gear 17 is meshed with an output bevel gear 5, the axle center of the output bevel gear 5 is in spline fit with one end of an output spline shaft 6, and the other end of the output spline shaft 6 is fixedly connected with one end of a tooth sleeve 7;
the transmission shafting 4 comprises a first tooth-type half coupling 8, a second tooth-type half coupling 9 and a spline shaft 10;
the other end of the tooth sleeve 7 is connected with one end of a spline shaft 10 through a first tooth-type half coupling 8 and a second tooth-type half coupling 9, and the other end of the spline shaft 10 is connected with the input end of a transmission case 12 at the lower part of the gas turbine.
Preferably, the sleeve 14 is sleeved outside a motor shaft 15 of the variable frequency starting motor, a flat key 13 of the motor shaft 15 is connected with the inner wall of the sleeve 14, torque of the variable frequency starting motor is transmitted to the sleeve 14 through the flat key 13 of the motor shaft 15, the sleeves outside the motor shafts of the two variable frequency starting motors are arranged in a hollow shaft 16, the inner wall of the sleeve 14 is connected with the hollow shaft 16 in a spline fit mode, and the hollow shaft 16 is used as a torque output shaft to be connected with the axle center of an input bevel gear 17.
Preferably, hollow shaft 16 is connected to the shaft center of input bevel gear 17 using a hinged stud.
Preferably, a safety pin 11 is arranged between the first toothed coupling 8 and the second toothed coupling 9.
The invention has the beneficial effects that: the invention is used for starting the gas turbine, adopts the variable frequency motor as a starter, transmits torque to the rotor of the gas turbine through the external transmission device and the transmission shaft system, has compact structure, can realize space vertical transmission, can realize the acceleration of the gas turbine from the starting in a static state to the working condition in a slow speed, and converts the external torque characteristic of the variable frequency motor into the optimal output characteristic suitable for the starting of the gas turbine. In addition, the starting device can also be used for a cold-drawing unit to carry out high-speed turning on the unit. Because the shaft system adopts the safety pin with the over-torsion protection, the motor over-torsion protection shaft system has the functions of preventing the motor from over-torsion protection and adjusting the torsion vibration of the gas turbine system.
Drawings
FIG. 1 is a schematic view of the external shape of the present invention;
Fig. 2 is a schematic diagram of the internal structure of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other.
The invention is further described below with reference to the drawings and specific examples, which are not intended to be limiting.
The starting device for the gas turbine of the embodiment comprises two variable-frequency starting motors, an external transmission device 2 and a transmission shaft system 4;
The external transmission device 2 is arranged outside the two variable-frequency starting motors and is linked with the two variable-frequency starting motors, so that the output torque of the two variable-frequency starting motors is transmitted to the external transmission device 2, and the external transmission device 2 transmits the torque of the two variable-frequency starting motors to the transmission box 12 at the lower part of the gas turbine through the transmission shafting 4, so that the vertical transmission of the input and output space is realized;
The starting device of the embodiment is fixed on a gas turbine underframe, a first variable frequency starting motor 1 and a second variable frequency starting motor 3 are arranged on two sides of the starting device, and the other end of the starting device is connected with a transmission box arranged at the lower part of the gas turbine through a transmission shaft system. In the starting process of the gas turbine, the two variable-frequency starting motors are connected with the transmission case device, the lower transmission case drives the rotor of the low-pressure compressor of the gas turbine to rotate, and after the rotating speed of the low-pressure compressor reaches the set rotating speed, the starting motors stop, and the transmission case device stops working. The transmission case device adopts oil bath type lubrication, and a unit lubrication system does not need to provide an independent oil supply and return pipeline for the transmission case device.
The external transmission case 2 of the embodiment consists of an output bevel gear 5, an output spline shaft 6, a tooth sleeve 7, an input bevel gear 17 and corresponding support bearings;
The torque output shafts of the two variable-frequency starting motors are connected with the axle center of an input bevel gear 17, the input bevel gear 17 is meshed with an output bevel gear 5, the axle center of the output bevel gear 5 is in spline fit with one end of an output spline shaft 6, and the other end of the output spline shaft 6 is fixedly connected with one end of a tooth sleeve 7;
The transmission shaft system 4 of the present embodiment includes a first tooth-type half coupling 8, a second tooth-type half coupling 9, and a spline shaft 10;
the other end of the tooth sleeve 7 is connected with one end of a spline shaft 10 through a first tooth-type half coupling 8 and a second tooth-type half coupling 9, and the other end of the spline shaft 10 is connected with the input end of a transmission case 12 at the lower part of the gas turbine.
When the gas turbine needs to be started, torque of the variable frequency starting motors is transmitted to the input bevel gear 17 through the two variable frequency starting motors arranged on two sides of the external transmission device, the output bevel gear 5 is driven, the output bevel gear 5 is in spline fit with the output spline shaft 6, the torque is transmitted to the tooth sleeve 7, the tooth sleeve 7 is connected with the first tooth type half coupling 8, the second tooth type half coupling 9 and the spline shaft 10, and the torque is transmitted to the lower transmission box 12 through the spline shaft 10.
The purpose of this embodiment is to provide the necessary power for the gas turbine from zero speed transition to purge, ignition, self-sustaining, trip conditions, to convert the torque external characteristics of the variable frequency motor into the optimal output characteristics for "gas turbine" start. In addition, the starting device can also be used for 'cold towing' of the unit, and high-speed jigger is carried out on the unit.
In this embodiment, the external transmission 2 further comprises a sleeve 14 and a hollow shaft 16;
The sleeve 14 is sleeved outside a motor shaft 15 of the variable frequency starting motor, a flat key 13 of the motor shaft 15 is connected with the inner wall of the sleeve 14, torque of the variable frequency starting motor is transmitted to the sleeve 14 through the flat key 13 of the motor shaft 15, the sleeves outside the motor shafts of the two variable frequency starting motors are arranged in a hollow shaft 16, the inner wall of the sleeve 14 is connected with the hollow shaft 16 in a spline fit mode, and the hollow shaft 16 is used as a torque output shaft to be connected with the axle center of an input bevel gear 17. The motor shafts of the variable-frequency starting motors at two sides of the embodiment are connected with a sleeve 14 in an external transmission device through a flat key 13, the sleeve 14 is connected with a hollow shaft 16 through a spline, and the hollow shaft 16 is of an elastic structure, so that double-motor power confluence can be realized. The spiral bevel gear is meshed to realize speed increasing and vertical input and output.
The external transmission device outputs to the transmission shaft system 4, and the transmission shaft system 4 realizes the transmission of the motor torque from the external transmission device to the lower transmission box 12;
In this embodiment, the hollow shaft 16 is connected to the shaft center of the input bevel gear 17 by a hinged stud.
In the present embodiment, a safety pin 11 is provided between the first tooth coupling 8 and the second tooth coupling 9. Because the transmission shaft system 4 adopts the safety pin with the over-torsion protection, the motor over-torsion protection shaft system has the functions of preventing the motor over-torsion protection shaft system and adjusting the torsion vibration of the gas turbine system.
Although the invention herein has been described with reference to particular embodiments, it is to be understood that these embodiments are merely illustrative of the principles and applications of the present invention. It is therefore to be understood that numerous modifications may be made to the illustrative embodiments and that other arrangements may be devised without departing from the spirit and scope of the present invention as defined by the appended claims. It should be understood that the different dependent claims and the features described herein may be combined in ways other than as described in the original claims. It is also to be understood that features described in connection with separate embodiments may be used in other described embodiments.
Claims (2)
1. The starting device for the gas turbine is characterized by comprising two variable-frequency starting motors, an external transmission device (2) and a transmission shaft system (4);
the external transmission device (2) is arranged outside the two variable-frequency starting motors and is linked with the two variable-frequency starting motors, so that the output torque of the two variable-frequency starting motors is transmitted to the external transmission device (2), and the external transmission device (2) transmits the torque of the two variable-frequency starting motors to a transmission box (12) at the lower part of the gas turbine through a transmission shafting (4) to realize the vertical transmission of the input and output space;
the external transmission device (2) comprises an output bevel gear (5), an output spline shaft (6), a tooth sleeve (7) and an input bevel gear (17);
The torque output shafts of the two variable-frequency starting motors are connected with the axle center of an input bevel gear (17), the input bevel gear (17) is meshed with an output bevel gear (5), the axle center of the output bevel gear (5) is in spline fit with one end of an output spline shaft (6), and the other end of the output spline shaft (6) is fixedly connected with one end of a tooth sleeve (7);
the transmission shafting (4) comprises a first tooth-type half coupling (8), a second tooth-type half coupling (9) and a spline shaft (10);
The other end of the tooth sleeve (7) is connected with one end of a spline shaft (10) through a first tooth-type half coupling (8) and a second tooth-type half coupling (9), and the other end of the spline shaft (10) is connected with the input end of a transmission case (12) at the lower part of the gas turbine;
the external transmission device (2) further comprises a sleeve (14) and a hollow shaft (16);
The sleeve (14) is sleeved outside a motor shaft (15) of the variable frequency starting motor, a flat key (13) of the motor shaft (15) is connected with the inner wall of the sleeve (14), torque of the variable frequency starting motor is transmitted to the sleeve (14) through the flat key (13) of the motor shaft (15), the sleeves outside the motor shafts of the two variable frequency starting motors are arranged in a hollow shaft (16), the inner wall of the sleeve (14) is connected with the hollow shaft (16) in a spline fit mode, and the hollow shaft (16) is used as a torque output shaft to be connected with the axle center of an input bevel gear (17);
A safety pin (11) is arranged between the first tooth-type half coupling (8) and the second tooth-type half coupling (9).
2. A starting device for a gas turbine according to claim 1, wherein,
The hollow shaft (16) is connected with the axis of the input bevel gear (17) by adopting a hinged stud.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011261276.7A CN112267942B (en) | 2020-11-12 | 2020-11-12 | Starting device for gas turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011261276.7A CN112267942B (en) | 2020-11-12 | 2020-11-12 | Starting device for gas turbine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112267942A CN112267942A (en) | 2021-01-26 |
| CN112267942B true CN112267942B (en) | 2024-07-19 |
Family
ID=74339044
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011261276.7A Active CN112267942B (en) | 2020-11-12 | 2020-11-12 | Starting device for gas turbine |
Country Status (1)
| Country | Link |
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| CN (1) | CN112267942B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114233480A (en) * | 2021-12-13 | 2022-03-25 | 中国船舶重工集团公司第七0三研究所 | Gas turbine transmission system |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN213360255U (en) * | 2020-11-12 | 2021-06-04 | 中国船舶重工集团公司第七0三研究所 | Starting device for gas turbine |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI401144B (en) * | 2010-10-01 | 2013-07-11 | Ind Tech Res Inst | Control mothed of rapid response join |
| US9520757B2 (en) * | 2012-08-03 | 2016-12-13 | Hitachi, Ltd. | Dual-shaft gas turbine power generation system, and control device and control method for gas turbine system |
| CN207673442U (en) * | 2017-12-28 | 2018-07-31 | 中科合肥微小型燃气轮机研究院有限责任公司 | A micro gas turbine deceleration transmission structure |
| CN211288517U (en) * | 2019-12-30 | 2020-08-18 | 中国船舶重工集团公司第七0三研究所 | Integrated transmission device for turning and starting of gas turbine generator set |
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- 2020-11-12 CN CN202011261276.7A patent/CN112267942B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN213360255U (en) * | 2020-11-12 | 2021-06-04 | 中国船舶重工集团公司第七0三研究所 | Starting device for gas turbine |
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| Publication number | Publication date |
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| CN112267942A (en) | 2021-01-26 |
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