CN203822466U - Multi-rotor fuel gas generator provided with counter-rotating compressors - Google Patents
Multi-rotor fuel gas generator provided with counter-rotating compressors Download PDFInfo
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- CN203822466U CN203822466U CN201420247254.9U CN201420247254U CN203822466U CN 203822466 U CN203822466 U CN 203822466U CN 201420247254 U CN201420247254 U CN 201420247254U CN 203822466 U CN203822466 U CN 203822466U
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Abstract
The utility model provides a multi-rotor fuel gas generator provided with counter-rotating compressors. A low-pressure compressor and a low-pressure turbine are mounted on a low-pressure rotor; a high-pressure compressor and a high-pressure turbine are mounted on a high-pressure rotor; setting angle directions of low-pressure turbine moving blades and high-pressure turbine moving blades are opposite; setting angle directions of low-pressure turbine moving blade guide vanes and high-pressure turbine guide vanes are the same; setting angle directions of low-pressure turbine guide vanes and the high-pressure turbine moving blades are the same; setting angle directions of high-pressure compressor moving blades and high-pressure compressor guide vanes are opposite, setting angle directions of low-pressure compressor moving blades and the high-pressure compressor guide vanes are the same; and setting angle directions of the high-pressure compressor moving blades and low-pressure compressor guide vanes are the same. According to the multi-rotor fuel gas generator realizing opposite rotating directions of the high-pressure compressor and the low-pressure compressor, pressure loss between the low-pressure turbine guide vanes, air amount of cooling turbines, equipment weight and resultant moment borne by a cartridge receiver can be reduced through quantity reduction of the low-pressure turbine guide vanes, the lower-pressure compressor outlet guide vanes and the high-pressure compressor inlet guide vanes.
Description
technical field:
The utility model relates to gas turbine component field, is specifically related to a kind of gas generator of many rotors with counter-rotating compressor.
background technique:
Since nineteen seventies, superior function due to gas turbine installation, have that volume is little simultaneously, specific power is large, start the features such as fast, easy to maintenance, in industrial peaking generation, compressed natural gas conveyance conduit, aeroengine, offshore platform generating and combustion-steam on the fields such as circulating power station, be widely used.
No matter be as mechanically operated gas turbine installation, or as industrial generation gas turbine installation, they all comprise a critical piece, Here it is gas generator.Gas generator is comprised of three large parts such as gas compressor, firing chamber and gas turbines, and it can be regarded as and can continuously produce the unit with certain pressure and temperature combustion gas.Rotor bank according to gas generator is divided, can roughly be divided into single rotor and many rotors gas generator, in the ordinary course of things, many rotors gas generator refers to the gas generator of double rotor and triple-spool, gas compressor is comprised of low pressure compressor, intermediate pressure compressor and high-pressure compressor, gas turbine be by low-pressure turbine, in pressure turbine and high-pressure turbine form.Conventionally low pressure compressor and low-pressure turbine are assemblied on a rotor, high-pressure compressor and high-pressure turbine are assemblied on a rotor, at this moment low-pressure turbine and high-pressure turbine are mounted on two different rotors, and the gas generator of this structure is called as double rotor gas generator; Between low pressure compressor and high-pressure compressor, increase an intermediate pressure compressor, intermediate pressure compressor and middle pressure turbine cartridge fit on a rotor, now low-pressure turbine, middle pressure turbine and high-pressure turbine are mounted on three different rotors, and the gas generator of this structure is called as triple-spool gas generator.Gas turbine is comprised of low-pressure turbine and high-pressure turbine, low-pressure turbine is comprised of low-pressure turbine stator guide vane (abbreviation stator), Low Pressure Turbine Rotor blade (abbreviation movable vane), low-pressure turbine casing, low-pressure turbine dish, Low Pressure Turbine Rotor axle, low pressure casing bearing etc., low-pressure turbine stator and the low-pressure turbine casing composition static part that is assembled together, and low-pressure turbine movable vane and low-pressure turbine dish and Low Pressure Turbine Rotor axle are assembled together and form rotatable parts.High-pressure turbine is comprised of high-pressure turbine stator guide vane (abbreviation stator), High Pressure Turbine Rotor blade (abbreviation movable vane), high-pressure turbine casing, high-pressure turbine dish, High Pressure Turbine Rotor axle, high pressure bearing etc., high-pressure turbine stator and the high-pressure turbine casing composition static part that is assembled together, and high-pressure turbine movable vane and high-pressure turbine dish and High Pressure Turbine Rotor axle are assembled together and form rotatable parts.High-pressure turbine is to be to accelerate to obtain kinetic energy in order to realize high-temperature high-pressure fuel gas expansion by the stator nozzle ring before high-pressure turbine movable vane, with very large velocity shock movable vane, at this moment the combustion gas of unit mass produces the moment of momentum to high-pressure turbine turbine and Low Pressure Turbine Rotor, thereby realize the transformation of energy that combustion gas is had, is the mechanical energy on conventional turbine rotor.In conventional many rotors gas generator, because low pressure compressor rotor is consistent with the sense of rotation of high-pressure compressor rotor, the opplied moment that air-flow produces high-pressure turbine movable vane while flowing in high-pressure turbine runner, force High Pressure Turbine Rotor along some direction rotations, there is larger turnover in air-flow after flowing through low-pressure turbine stator, then flow in the movable vane runner of low-pressure turbine, the opplied moment that air-flow produces low-pressure turbine movable vane forces Low Pressure Turbine Rotor still to keep along same direction rotation.Make like this denseness of low pressure compressor exit guide blade, high-pressure compressor entry guide vane, low-pressure turbine stator and movable vane larger, and the turning angle of low-pressure turbine stator is larger, the unfavorable factor such as the pressure loss of inter-stage air quantity large and cooling turbine stator is more.
model utility content:
Task of the present utility model is to provide a kind of gas generator of many rotors with counter-rotating compressor, and not only the pressure loss simple in structure, low-pressure turbine stator inter-stage is little for it, and can also reduce suffered resultant moment of force on the air quantity of cooling turbine and casing.
The utility model is to solve the problems of the technologies described above the technological scheme of taking to be: with many rotors gas generator of counter-rotating compressor, comprise casing, gas compressor, firing chamber and gas turbine, low pressure compressor and low-pressure turbine are arranged on a low pressure rotor, high-pressure compressor and high-pressure turbine are arranged on high pressure rotor, low-pressure turbine movable vane on low-pressure turbine and the established angle opposite direction of high-pressure turbine movable vane, low-pressure turbine movable vane stator is identical with the established angle direction of high-pressure turbine stator, and low-pressure turbine stator is identical with the established angle direction of high-pressure turbine movable vane;
The established angle opposite direction of high-pressure compressor movable vane and high-pressure compressor stator, low pressure compressor movable vane is identical with the established angle direction of high-pressure compressor stator, high-pressure compressor movable vane is identical with the established angle direction of low pressure compressor stator, thereby obtains a kind of many rotors generator of counter-rotating compressor.
Because low pressure compressor and the low-pressure turbine of many rotors of routine gas generator is arranged on low pressure rotor, high-pressure compressor and high-pressure turbine are arranged on high pressure rotor, by changing the blade profile of low-pressure turbine stator, the established angle of low pressure compressor or high-pressure compressor stator and movable vane, make air-flow that less turnover only occur after flowing through low-pressure turbine stator, flow in low-pressure turbine movable vane runner, the active force that air-flow produces low-pressure turbine movable vane forces Low Pressure Turbine Rotor along a direction rotation, and the active force that air-flow produces high-pressure turbine movable vane forces high pressure rotor along another direction rotation, realize the sense of rotation of high-pressure compressor contrary with the sense of rotation of low pressure compressor.
The utlity model has following beneficial effect: owing to adopting technique scheme, realized the low pressure compressor many rotor gas generator contrary with high-pressure compressor sense of rotation, by reducing the quantity of low-pressure turbine stator, low pressure compressor exit guide blade and high-pressure compressor entry guide vane, can reduce the pressure loss of low-pressure turbine stator inter-stage, suffered resultant moment of force on the air quantity of cooling turbine, weight of equipment and casing.
accompanying drawing explanation:
Fig. 1 is the structure diagram of conventional double rotor gas generator.
Fig. 2 is the leaf grating runner sketch of conventional double rotor gas generator, along air-flow direction (from left to right), sees, supposes sense of rotation.
Fig. 3 is the leaf grating runner sketch with the double rotor gas generator of counter-rotating compressor.
In Fig. 2 and Fig. 3, the front cross section of high-pressure turbine stator (11) represents with 0-0, the front cross section of high-pressure turbine movable vane (13) represents with 1-1, cross section after high-pressure turbine movable vane (13) represents with 2-2, the front cross section of low-pressure turbine movable vane (14) represents with 3-3, cross section after low-pressure turbine movable vane (14) represents with 4-4, the front cross section of low pressure compressor movable vane (15) represents with 5-5, cross section after low pressure compressor movable vane (15) represents with 6-6, the front cross section of high-pressure compressor movable vane (17) represents with 7-7, cross section after high low pressure gas compressor moving blade (17) represents with 8-8.
In figure, arrow represents the velocity vector of air-flow, also represents the sense of rotation of high-pressure compressor movable vane (17), low pressure compressor movable vane (15), high-pressure turbine movable vane (13), low-pressure turbine movable vane (14).
In figure, alphabetical α i represents the angle of air-flow absolute velocity and cross section i-i air-flow velocity of moving space;
β i represents the angle of air-flow relative velocity and cross section i-i air-flow velocity of moving space;
ci represents that air-flow is in the absolute velocity of cross section i-i;
wi represents that air-flow is at the relative velocity of cross section i-i;
Ui represents that air-flow is in the velocity of moving space of cross section i-i.
1-casing in figure, 2-gas compressor, 3-firing chamber, 4-gas turbine, 5-low pressure compressor, 6-high-pressure compressor, 7-low-pressure turbine, 8-high-pressure turbine, 9-low pressure rotor, 10-high pressure rotor 11-high-pressure turbine stator, 12-low-pressure turbine stator, 13-high-pressure turbine movable vane, 14-low-pressure turbine movable vane, 15-low pressure compressor movable vane, 16-low pressure compressor stator, 17-high-pressure compressor movable vane, 18-high-pressure compressor stator.
embodiment:
Below in conjunction with accompanying drawing, the utility model is described in further detail:
By Fig. 1 in conjunction with Fig. 2, shown in Fig. 3, many rotors gas generator with counter-rotating compressor, comprise casing 1, gas compressor 2, firing chamber 3 and gas turbine 4, low pressure compressor 5 is arranged on low pressure rotor 9 with low-pressure turbine 7, high-pressure compressor 6 is arranged on high pressure rotor 10 with high-pressure turbine 8, every row's turbine rotor blade and stator all have certain established angle with respect to gas turbine center line, when crossing stator, air flow stream changes airflow direction, while flowing through movable vane, Aerodynamic force action is in movable vane, thereby movable vane is pivoted, the established angle opposite direction of low-pressure turbine movable vane 14 and high-pressure turbine movable vane 13, low-pressure turbine movable vane 14 stators are identical with the established angle direction of high-pressure turbine stator 11, low-pressure turbine stator 12 is identical with the established angle direction of high-pressure turbine movable vane 13,
The established angle opposite direction of high-pressure compressor movable vane 17 and high-pressure compressor stator 18, low pressure compressor movable vane 15 is identical with the established angle direction of high-pressure compressor stator 18, high-pressure compressor movable vane 17 is identical with the established angle direction of low pressure compressor stator 16, thereby obtains a kind of many rotors generator of counter-rotating compressor.
By Fig. 1, in conjunction with shown in Fig. 2, low pressure compressor 5 is assemblied on low pressure rotor 9 with low-pressure turbine 7, and high-pressure compressor 6 is assemblied on high pressure rotor 10 with high-pressure turbine 8.Air enters in low pressure compressor 5, flow to cross section 5-5, and air-flow is with relative velocity
w5enter in low pressure compressor movable vane 15, after overcompression with relative velocity
w6flow out cross section 6-6, and with absolute velocity
c6flow into low pressure compressor stator 16, flow into subsequently in high-pressure compressor 6, flow to cross section 7-7, air-flow is with relative velocity
w7enter in high-pressure compressor movable vane 17, through again compression after with relative velocity
w8flow out cross section 8-8, and with absolute velocity
c8flow into high-pressure compressor stator 18, last air-flow is from being flowed out by high-pressure compressor exit guide blade, 3 li of flowing in combustion chambers.From firing chamber, 3 high-temperature fuel gas that flow out are with a certain speed
c0 flows to high-pressure turbine stator 11, and air-flow flow to cross section 1-1 from cross section 0-0, and airflow direction becomes α 1 from α 0, speed by
c0 becomes
c1; Then air-flow is with relative wind angle β 1 and relative velocity
w1 enters in high-pressure turbine movable vane 13, after this turns expansion, flow to cross section 2-2, and combustion gas is with relative wind angle β 2 and relative velocity
w2 flow out, at this moment the speed of air-flow by
c1 becomes
c2, the active force that air-flow produces high pressure whirling motion leaf 13 makes high pressure rotor 10 rotate along clockwise direction; Along with combustion gas is again with a certain speed
c2 flow to low-pressure turbine stator 12 along α 2 airflow directions from cross section 2-2, after larger turnover will occur this air-flow, from cross section 3-3, flow out, and at this moment the flow direction of air-flow becomes α 3 from α 2, speed by
c2 become
c3, then air-flow is again with relative wind angle β 3 and relative air speed
w3 enter in low-pressure turbine movable vane 14, after turn expanding with relative wind angle β 4 and relative air speed
w4 flow out from cross section 4-4, at this moment airspeed by
c3 become
c4, the active force that air-flow produces low-pressure turbine movable vane 14 also rotates low pressure rotor 9 along clockwise direction.
Because low pressure compressor movable vane 15 is identical with the sense of rotation of high-pressure compressor movable vane 17, this makes high-pressure turbine movable vane 13 is also identical with the sense of rotation of low-pressure turbine movable vane 14, and high pressure rotor 10 is also by clockwise rotating with low pressure rotor 9.Air-flow flows to the process of gas turbine 4 from gas compressor 2, and the aerodynamical moment that air-flow acts on respectively on low pressure compressor stator 16, high-pressure compressor stator 18, high-pressure turbine stator 11 and low-pressure turbine stator 12 is along some directions.
In conjunction with Fig. 1 and Fig. 3, can find out, low pressure compressor 5 is assemblied on low pressure rotor 9 and rotates along counter clockwise direction with low-pressure turbine 7, and high-pressure compressor 6 is assemblied on high pressure rotor 10 and along clockwise direction, rotates with high-pressure turbine 8.Air enters in low pressure compressor 5, flow to cross section 5-5, and air-flow is with relative velocity
w5enter in low pressure compressor movable vane 15, after overcompression with relative velocity
w6flow out cross section 6-6, and with absolute velocity
c6flow into low pressure compressor stator 16, flow into subsequently in high-pressure compressor 6, flow to cross section 7-7, air-flow is with relative velocity
w7enter in high-pressure compressor movable vane 17, through again compression after with relative velocity
w8flow out cross section 8-8, and with absolute velocity
c8flow into high-pressure compressor stator 18, finally from being flowed out by high-pressure compressor 6 exit guide blades, 3 li of flowing in combustion chambers.The high-temperature fuel gas flowing out from firing chamber 3 is with a certain speed
c0 flows to high-pressure turbine stator 11, and air-flow flow to cross section 1-1 from cross section 0-0, and airflow direction becomes α 1 from α 0, speed by
c0 is increased to
c1; Then air-flow is with relative wind angle β 1 and relative air speed
w1 enters in high-pressure turbine movable vane 13, after this turns expansion, flow to cross section 2-2, and combustion gas is with relative wind angle β 2 and relative air speed
w2 flow out, at this moment the speed of air-flow by
c1 becomes
c2, the active force that air-flow produces high-pressure turbine movable vane makes high pressure rotor 10 rotate along clockwise direction; Combustion gas is subsequently again with a certain speed
c2 flow to low-pressure turbine stator 12 along α 2 airflow directions, and air-flow flows to low-pressure turbine stator (12) from cross section 2-2, and air-flow flows out from cross section 3-3 after less turning back only occurs for this, and at this moment the flow direction of air-flow changes to α 3 from α 2, speed by
c2 become
c3; Then air-flow is with relative wind angle β 3 and relative air speed
w3 enter in low-pressure turbine movable vane 14, after turn expanding with relative wind angle β 4 and relative air speed
w4 flow out from cross section 4-4, at this moment the speed of air-flow by
c3 become
c4, the active force that air-flow produces low-pressure turbine movable vane 14 makes 9 of low pressure rotors along counterclockwise direction rotation.
From Fig. 3 and Fig. 2 contrast, it can also be seen that, because the blade profile of low-pressure turbine stator 12 is different with established angle, the established angle of low pressure compressor stator 15 and low pressure compressor movable vane 16 is also different, makes high-pressure turbine movable vane 13 contrary with the sense of rotation of low-pressure turbine movable vane 14.Because high pressure rotor 10 rotates along clockwise direction, and low pressure rotor 9 is along counterclockwise rotation, at air-flow, from gas compressor 2, flow to the process of gas turbine 4, there is change in the aerodynamical moment direction of airflow function on low pressure compressor stator 16 and low-pressure turbine stator 12, thereby the resultant moment of force acting on casing 1 is also correspondingly reduced.
Employing, with many rotors gas generator of counter-rotating compressor, by reducing the quantity of low-pressure turbine stator, low pressure compressor exit guide blade and high-pressure compressor entry guide vane, can reduce air quantity and the component weight of interstage pressure loss, cooling turbine.
Claims (1)
1. the gas generator of the many rotors with counter-rotating compressor, comprise casing (1), gas compressor (2), firing chamber (3) and gas turbine (4), it is characterized in that: low pressure compressor (5) is arranged on low pressure rotor (9) with low-pressure turbine (7), high-pressure compressor (6) is arranged on high pressure rotor (10) with high-pressure turbine (8), the established angle opposite direction of low-pressure turbine movable vane (14) and high-pressure turbine movable vane (13), low-pressure turbine movable vane (14) stator is identical with the established angle direction of high-pressure turbine stator (11), low-pressure turbine stator (12) is identical with the established angle direction of high-pressure turbine movable vane (13),
High-pressure compressor movable vane (17) and high-pressure compressor stator (18) established angle opposite direction, low pressure compressor movable vane (15) is identical with the established angle direction of high-pressure compressor stator (18), high-pressure compressor movable vane (17) is identical with the established angle direction of low pressure compressor stator (16), thereby obtains a kind of many rotors generator of counter-rotating compressor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420247254.9U CN203822466U (en) | 2014-05-15 | 2014-05-15 | Multi-rotor fuel gas generator provided with counter-rotating compressors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420247254.9U CN203822466U (en) | 2014-05-15 | 2014-05-15 | Multi-rotor fuel gas generator provided with counter-rotating compressors |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203822466U true CN203822466U (en) | 2014-09-10 |
Family
ID=51477978
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420247254.9U Withdrawn - After Issue CN203822466U (en) | 2014-05-15 | 2014-05-15 | Multi-rotor fuel gas generator provided with counter-rotating compressors |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203822466U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103953445A (en) * | 2014-05-15 | 2014-07-30 | 中国船舶重工集团公司第七�三研究所 | Multi-rotor gas generator provided with counter rotating gas compressors |
| CN104763474A (en) * | 2015-03-28 | 2015-07-08 | 中国船舶重工集团公司第七�三研究所 | Novel three-rotor counter-rotating turbine |
| CN104763475A (en) * | 2015-03-28 | 2015-07-08 | 中国船舶重工集团公司第七�三研究所 | Novel three-rotor gas turbine |
-
2014
- 2014-05-15 CN CN201420247254.9U patent/CN203822466U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103953445A (en) * | 2014-05-15 | 2014-07-30 | 中国船舶重工集团公司第七�三研究所 | Multi-rotor gas generator provided with counter rotating gas compressors |
| CN103953445B (en) * | 2014-05-15 | 2015-10-14 | 中国船舶重工集团公司第七�三研究所 | Many rotors gas generator with counter-rotating compressor |
| CN104763474A (en) * | 2015-03-28 | 2015-07-08 | 中国船舶重工集团公司第七�三研究所 | Novel three-rotor counter-rotating turbine |
| CN104763475A (en) * | 2015-03-28 | 2015-07-08 | 中国船舶重工集团公司第七�三研究所 | Novel three-rotor gas turbine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140910 Effective date of abandoning: 20151014 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |