CN103836127A - Starting device for two-level speed changing gas turbine - Google Patents
Starting device for two-level speed changing gas turbine Download PDFInfo
- Publication number
- CN103836127A CN103836127A CN201310669995.6A CN201310669995A CN103836127A CN 103836127 A CN103836127 A CN 103836127A CN 201310669995 A CN201310669995 A CN 201310669995A CN 103836127 A CN103836127 A CN 103836127A
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- Prior art keywords
- follower
- driving wheel
- diameter
- shaft
- speed
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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
- F02C7/26—Starting; Ignition
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/023—Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Structure Of Transmissions (AREA)
Abstract
The invention discloses a starting device of a two-level speed changing gas turbine. The starting device comprises a base and a shell installed on the base. The shell is internally provided with an input shaft through a bearing, the input shaft is fixedly connected with a capstan, the shell is internally further provided with an output shaft, the output shaft is fixedly connected with a driving wheel, the shell is internally provided with a speed changing shaft fixedly connected with a driven wheel A, a driven wheel B and an electromagnetic clutch, the driven wheel A is meshed with the capstan, and the driven wheel B is meshed with the driving wheel. The diameter of the capstan is larger than that of the driven wheel A, the diameter of the driven wheel B is larger than that of the driven wheel A, and the diameter of the driven wheel B is larger than that of the driving wheel. The starting device has the advantages of being compact in structure, low in manufacturing cost, small in occupied space, large in transmission torque, easy to control and the like.
Description
Technical field
The present invention relates to the starting device field of gas turbine generator, be specifically related to a kind of two stage speed change gas turbine starting drive.
Background technique
At present, when gas turbine generator power turbine starts, generally realize by a starting drive, this starting drive generally comprises a motor and a speed-changing gear box, motor is connected with speed-changing gear box input shaft, speed-changing gear box output shaft is connected with the input shaft of gas turbine, makes the power turbine of gas turbine reach igniting require rotating speed to start gas turbine by motor and speed-changing gear box.The gas turbine of certain model, it is 4500r/min that its igniting requires rotating speed, when starting drive output speed reaches 4500r/min, gas turbine gets final product ignition operation, starting arrangement quits work subsequently, and power turbine rotation, in the time that 200r/min falls in power turbine rotating speed, starting arrangement is started working again, and rotating speed is brought up to 4500r/min.The required Operating torque of power turbine rotating shaft in the gas turbine of this model is 320NM.In order to reach defined rotating speed, power turbine input shaft and speed-changing gear box output shaft are departed from, the best approach is, at the output shaft of speed-changing gear box and power turbine input shaft joint, clutch is installed, but due to restrictions such as Operating torque, rotating speed and space are little, in the time selecting clutch, need many-sidedly to consider.
Conventional clutch generally has mechanical type, pneumatic type, hydraulic type and electromagnetic type several, wherein mechanical type, pneumatic type and hydraulic type have advantages of and can reach high rotating speed and high moment of torsion, but shortcoming is mechanical type can only realize clutch under the slow-speed of revolution or state of rest, pneumatic and hydraulic type volume is large, the large fuel inlet fitting complexity of rotary inertia, air pressure, oil pressure are subject to the impact of centrifugal force.And magnetic clutch has advantages of that moment of torsion is large, volume is little, it is simple to handle and can realize clutch under high-speed state.Obviously, magnetic clutch is optimum solution, in order to save cost, for the gas turbine of above-mentioned model, the Peak torque of the fixed magnetic field electromagnetism multiplate clutch adopting is 360NM, meet the moment of torsion that requires of above-mentioned model gas turbine, but peak speed is only 3300r/min, can not reach the rotating speed requirement of 4500r/min, and traditional speed-changing gear box is only one-level speed change, only contain one group of speed change gear, obviously this magnetic clutch can not directly be contained in this one-level speed-changing gear box and use; The high-revolving magnetic clutch if change the outfit, there is again the problem that rotating speed is high, moment of torsion is little, driving force is not enough and cause starting gas turbine, and the magnetic clutch that the low operating life of turning round magnetic clutch of high speed is turned round low speed compared to height is short, can make cost significantly increase.
Summary of the invention
The object of the invention is to: a kind of two stage speed change gas turbine starting drive is provided, to solve conventional start-up device only for the height that one-level speed change is caused is turned round the problem that low speed magnetic clutch cannot use, and the high speed that changes the outfit is low turns round the problem that the existing moment of torsion of magnetic clutch is little, power turbine cannot start, cost is higher.
The object of the invention is to be achieved by following technical solution:
A kind of two stage speed change gas turbine starting drive, comprise base and be arranged on the housing on base, in housing, by bearing, input shaft is installed, on input shaft, be connected with driving wheel, in housing, be also provided with output shaft, on output shaft, be connected with driving wheel, in described housing, variable-speed shaft is installed, on variable-speed shaft, be connected with follower A, follower B and magnetic clutch, follower A engages with driving wheel, and follower B engages with driving wheel; Driving wheel diameter is greater than follower A diameter, and follower B diameter is greater than follower A diameter, and follower B diameter is greater than driving wheel diameter.
Described variable-speed shaft, input shaft and output shaft are equilateral triangle and arrange.
Described housing both sides are all connected with liner plate.
Described output shaft left end is provided with sheath.
The invention has the beneficial effects as follows:
Compared with prior art, two stage speed change gas turbine starting drive provided by the invention, in traditional one-level speed-changing gear box, install a variable-speed shaft additional, this variable-speed shaft is provided with follower A and follower B, the diameter of follower B is greater than the diameter of follower A, follower A engages with driving wheel, follower B engages with driving wheel, and then realize the variable speed relationship step by step of driving wheel → follower A → follower B → driving wheel, make this device meet height to turn round the usage requirement of low speed magnetic clutch, and then efficiently solve the low high problem of the existing cost of magnetic clutch of turning round of the high speed that changes the outfit, in addition, the present invention also has compact structure, fabricating cost is low, space hold is little, transfer of torque is large, control the advantages such as simple, and suitable large-scale popularization is used.
Accompanying drawing explanation
Fig. 1 is plan view of the present invention;
Fig. 2 is the A-A sectional view of Fig. 1;
Fig. 3 is the cut-away view of overlooking of the present invention;
In figure: 1-housing, 2-base, 3-input shaft, 4-variable-speed shaft, 5-output shaft, 6-driving wheel, 7-follower A, 8-follower B, 9-sheath, 10-liner plate, 11-clutch, 12-bearing, 13-driving wheel.
Embodiment
Below in conjunction with drawings and Examples, technological scheme of the present invention is described further, but described in desired protection domain is not limited to;
As shown in Figure 1,2 and 3, two stage speed change gas turbine starting drive provided by the invention, comprise base 2 and be arranged on the housing 1 on base 2, in housing 1, by bearing 12, input shaft 3 is installed, on input shaft 3, be connected with driving wheel 6, in housing 1, be also provided with output shaft 5, on output shaft 5, be connected with driving wheel 13, in described housing 1, variable-speed shaft 4 is installed, on variable-speed shaft 4, be connected with follower A7, follower B8 and magnetic clutch 11, follower A7 engages with driving wheel 6, and follower B8 engages with driving wheel 13; Driving wheel 6 diameters are greater than follower A7 diameter, and follower B8 diameter is greater than follower A7 diameter, and follower B8 diameter is greater than driving wheel 13 diameters.
Described variable-speed shaft 4, input shaft 3 and output shaft 5 are equilateral triangle to be arranged, by the layout of equilateral triangle, can obtain minimum space hold, and then significantly reduce space hold of the present invention, and guarantee enough compactedness.
Cause the generation of the situations such as the decline of engagement degree, housing distortion in order to prevent input shaft 3, output shaft 5 and variable-speed shaft 4 from axial displacement occurring, described housing 1 both sides are all connected with liner plate 10.
Described output shaft 5 left ends are provided with sheath 9, and it can effectively prevent that dust from entering between output shaft 5 and housing 1, guarantee the operation normally and efficiently of output shaft 5.
Embodiment: be with driven input shaft 3 in the interior rotation of bearing 12 in the time that motor (not shown) starts, the driving wheel 6 being arranged on input shaft 3 drives the follower A7 rotation on variable-speed shaft 4, and then drive variable-speed shaft 4 to rotate, because follower A7 is coaxial with follower B8, making follower B8 make constant angular velocity with variable-speed shaft 4 rotates, drive driving wheel 13 to rotate with back front driven wheel B8, driving wheel 13 driver output axles 5 rotate, because driving wheel 6 diameters are greater than follower A7 diameter, follower B8 diameter is greater than follower A7 diameter, follower B8 diameter is greater than driving wheel 13 diameters, realize increasing progressively step by step of rotating speed, and then realize the requirement of two stage speed change.In the time that output shaft 5 reaches the about 4500r/min of power turbine (not shown) fire speed, magnetic clutch 11 drives the driving wheel 6 on follower A7 and input shaft 3 to depart from matching relationship.At this moment only having output shaft 5, follower A7 and follower B8 to be under non-loaded state rotates.In this device, between driving wheel 6 and input shaft 3, between follower A7, follower B8 and variable-speed shaft 4, between driving wheel 13 and output shaft 5, be flat key and be connected.
When reducing and be less than igniting, power turbine rotating speed require rotating speed 4500r/min to be, magnetic clutch 11 drives follower A7 to engage from departing to become with the driving wheel 6 on input shaft 3, motor drives input shaft 3 to rotate, and again makes output shaft 5 reach igniting by two stage speed change and requires rotating speed.
Claims (4)
1. a two stage speed change gas turbine starting drive, comprise base (2) and be arranged on the housing (1) on base (2), in housing (1), by bearing (12), input shaft (3) is installed, on input shaft (3), be connected with driving wheel (6), in housing (1), be also provided with output shaft (5), on output shaft (5), be connected with driving wheel (13), it is characterized in that: variable-speed shaft (4) is installed in described housing (1), variable-speed shaft is connected with follower A(7 on (4)), follower B(8) and magnetic clutch (11), follower A(7) engage with driving wheel (6), follower B(8) engage with driving wheel (13), driving wheel (6) diameter is greater than follower A(7) diameter, follower B(8) diameter is greater than follower A(7) and diameter, follower B(8) diameter is greater than driving wheel (13) diameter.
2. two stage speed change gas turbine starting drive according to claim 1, is characterized in that: described variable-speed shaft (4), input shaft (3) and output shaft (5) are equilateral triangle and arrange.
3. two stage speed change gas turbine starting drive according to claim 1, is characterized in that: described housing (1) both sides are all connected with liner plate (10).
4. two stage speed change gas turbine starting drive according to claim 1, is characterized in that: described output shaft (5) left end is provided with sheath (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310669995.6A CN103836127A (en) | 2013-12-10 | 2013-12-10 | Starting device for two-level speed changing gas turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310669995.6A CN103836127A (en) | 2013-12-10 | 2013-12-10 | Starting device for two-level speed changing gas turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103836127A true CN103836127A (en) | 2014-06-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310669995.6A Pending CN103836127A (en) | 2013-12-10 | 2013-12-10 | Starting device for two-level speed changing gas turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103836127A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2411437A (en) * | 2004-02-28 | 2005-08-31 | Rolls Royce Plc | Aircraft gas turbine engine |
| WO2009067048A1 (en) * | 2007-11-20 | 2009-05-28 | Volvo Aero Corporation | Gas turbine engine |
| CN101628627A (en) * | 2008-07-18 | 2010-01-20 | 尤洛考普特公司 | Hybrid power plant and method of controlling such a power plant |
| CN102235246A (en) * | 2010-04-20 | 2011-11-09 | 通用电气公司 | Accessory gearbox with a starter/generator |
| CN102667107A (en) * | 2009-11-18 | 2012-09-12 | 斯奈克玛 | Device for changing the transmission ratio between a turbine shaft and a starter/generator shaft of aircraft engine |
| CN203703023U (en) * | 2013-12-10 | 2014-07-09 | 贵州黎阳航空动力有限公司 | Variable-speed starting device for gas turbine |
-
2013
- 2013-12-10 CN CN201310669995.6A patent/CN103836127A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2411437A (en) * | 2004-02-28 | 2005-08-31 | Rolls Royce Plc | Aircraft gas turbine engine |
| WO2009067048A1 (en) * | 2007-11-20 | 2009-05-28 | Volvo Aero Corporation | Gas turbine engine |
| CN101628627A (en) * | 2008-07-18 | 2010-01-20 | 尤洛考普特公司 | Hybrid power plant and method of controlling such a power plant |
| CN102667107A (en) * | 2009-11-18 | 2012-09-12 | 斯奈克玛 | Device for changing the transmission ratio between a turbine shaft and a starter/generator shaft of aircraft engine |
| CN102235246A (en) * | 2010-04-20 | 2011-11-09 | 通用电气公司 | Accessory gearbox with a starter/generator |
| CN203703023U (en) * | 2013-12-10 | 2014-07-09 | 贵州黎阳航空动力有限公司 | Variable-speed starting device for gas turbine |
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| 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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20140604 |