CN204492897U - Novel triple-spool counter rotating turbine - Google Patents
Novel triple-spool counter rotating turbine Download PDFInfo
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- CN204492897U CN204492897U CN201520178716.0U CN201520178716U CN204492897U CN 204492897 U CN204492897 U CN 204492897U CN 201520178716 U CN201520178716 U CN 201520178716U CN 204492897 U CN204492897 U CN 204492897U
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Abstract
The utility model provides a kind of novel triple-spool counter rotating turbine, by changing the blade profile of low-pressure turbine stator and power turbine stator, the established angle of stator and movable vane, when air-flow is when flowing through high-pressure turbine, high-pressure turbine is rotated along a direction, less turnover is only there is in air-flow after flowing through low-pressure turbine stator, Low Pressure Turbine Rotor is rotated along another direction, and power turbine is an independently rotor, then rotate along with the same direction of high-pressure turbine, realize high-pressure turbine contrary with the sense of rotation of low-pressure turbine, high-pressure turbine is identical with power turbine sense of rotation.Owing to adopting technique scheme, achieve a kind of novel triple-spool counter rotating turbine, by reducing low-pressure turbine stator, power turbine stator, resultant moment of force suffered on the pressure loss of low-pressure turbine stator inter-stage, the air quantity of cooling turbine, weight of equipment and casing can be reduced.
Description
technical field:
The utility model patent is a kind of novel triple-spool counter rotating turbine, and it can the technical field such as extensive use gas turbine installation and rotating machinery.
background technique:
Since nineteen seventies, due to the superior function of gas turbine installation, have that volume is little simultaneously, specific power is large, start the features such as fast, easy to maintenance, the fields such as industrial peaking generation, compressed natural gas delivery line, offshore platform and combustion-steaming circulating power station are widely used.
No matter be as mechanically operated gas turbine, or as generating gas turbine, it is by gas compressor, firing chamber and the large parts composition of turbine three, it can be regarded as and can continuously produce the unit with certain pressure and temperature combustion gas, usually, gas turbine can be divided into again single rotor and many stage turbine engine, many stage turbine engine refer to double rotor and three spool turbine, low pressure compressor and low-pressure turbine are assemblied on a low pressure rotor, high-pressure compressor and high-pressure turbine are assemblied on a high pressure rotor, at this moment low-pressure turbine and high-pressure turbine are arranged on two different rotors respectively, power turbine is an independently power turbine, the gas turbine of this structure is called as three spool turbine, now turbine is by low-pressure turbine, high-pressure turbine and power turbine composition, turbine is by stators guide vane (abbreviation stator), turbine rotor blade (abbreviation movable vane), casing, the turbine disk, turbine rotor shaft, the compositions such as bearing, turbine guide vane and casing are assembled together composition static part, composition rotatable parts and movable vane and the turbine disk and turbine rotor shaft are assembled together, accelerate to obtain kinetic energy to realize high-temperature high-pressure fuel gas expansion, with very large velocity shock movable vane, at this moment the combustion gas of unit mass is to high-pressure turbine, the rotor of low-pressure turbine and power turbine produces the moment of momentum, thus the transformation of energy realizing combustion gas being had is the mechanical energy on turbine rotor.
But a common feature of this triple-spool turbine is exactly: make low-pressure turbine, high-pressure turbine and power turbine all rotate along some directions when air-flow flows in the runner of low-pressure turbine, high-pressure turbine and power turbine to the active force that movable vane produces, make the denseness of power turbine stator, low-pressure turbine stator and movable vane larger like this, and the turning angle of low-pressure turbine stator is comparatively large, the unfavorable factors such as the pressure loss air quantity that is comparatively large and cooling turbine stator of inter-stage is more.
summary of the invention:
In order to solve the problem, task of the present utility model is to provide a kind of novel triple-spool counter rotating turbine.
The utility model is solve the problems of the technologies described above the technological scheme taked to be: novel triple-spool counter rotating turbine, comprise low-pressure turbine, high-pressure turbine and power turbine, low-pressure turbine is arranged on a low pressure rotor, high-pressure turbine is arranged on high pressure rotor, power turbine is an independently power turbine, low-pressure turbine movable vane is contrary with the established angle direction of high-pressure turbine movable vane, low-pressure turbine movable vane 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;
Power turbine is an independently rotor and be mechanically connected with load, and power turbine stator is identical with low-pressure turbine movable vane established angle direction, and power turbine movable vane is identical with low-pressure turbine stator established angle direction, thus obtains a kind of novel triple-spool counter rotating turbine.
By changing the blade profile of low-pressure turbine stator, make air-flow, after flowing through low-pressure turbine stator, less turnover only occur, flow in low-pressure turbine movable vane runner, air-flow forces Low Pressure Turbine Rotor to rotate along a direction to the active force that low-pressure turbine movable vane produces, and air-flow forces high pressure rotor to rotate along another direction to the active force that high-pressure turbine movable vane produces, there is less turnover when flowing into power turbine stator in air-flow subsequently, air-flow forces power turbine to rotate along the direction identical with high pressure rotor sense of rotation to the active force that power turbine movable vane produces, namely high-pressure turbine is realized contrary with the sense of rotation of low-pressure turbine, high-pressure turbine is identical with the sense of rotation of power turbine.
The utility model has following beneficial effect: owing to adopting technique scheme, the novel triple-spool counter rotating turbine that the sense of rotation achieving low-pressure turbine and high-pressure turbine is contrary, the sense of rotation of power turbine and high-pressure turbine is identical, by reducing the quantity of low-pressure turbine stator and power turbine stator, resultant moment of force suffered on the pressure loss of low-pressure turbine stator inter-stage, the air quantity of cooling turbine, weight of equipment and casing can be reduced.
accompanying drawing illustrates:
Fig. 1 is the structure diagram of novel triple-spool counter rotating turbine;
Fig. 2 is the leaf grating runner sketch of the novel triple-spool counter rotating turbine of the utility model, sees, suppose sense of rotation along air-flow direction (from left to right).
In fig. 2, cross section before high-pressure turbine stator 11 represents with 0-0, cross section before high-pressure turbine movable vane 13 represents with 1-1, cross section after high-pressure turbine movable vane 13 represents with 2-2, cross section before low-pressure turbine movable vane 14 represents with 3-3, and the cross section after low-pressure turbine movable vane 14 represents with 4-4, and the cross section before power turbine stator 19 represents with 9-9, cross section before power turbine movable vane 20 represents with 10-10, and the cross section after power turbine movable vane 20 represents with 11-11.
In figure, arrow represents the velocity vector of air-flow, also represents the sense of rotation of high-pressure turbine movable vane (13), low-pressure turbine movable vane (14), power turbine movable vane (20).
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 the absolute velocity of air-flow at cross section i-i
Wi represents the relative velocity of air-flow at cross section i-i
Ui represents the velocity of moving space of air-flow at cross section i-i
3-high-pressure turbine in figure, 4-low-pressure turbine, 5-power turbine, 6-low pressure rotor, 8-high pressure rotor, 9-power turbine, 10-load, 11-high-pressure turbine stator, 12-low-pressure turbine stator, 13-high-pressure turbine movable vane, 14-low-pressure turbine movable vane, 19-power turbine stator, 20-power turbine movable vane.
embodiment:
Below in conjunction with accompanying drawing, the utility model is described in further detail:
Shown in Fig. 1 composition graphs 2, novel triple-spool counter rotating turbine, comprise low-pressure turbine 4, high-pressure turbine 3 and power turbine 5, low-pressure turbine 4 is arranged on low pressure rotor 6, high-pressure turbine 3 is arranged on high pressure rotor 8, power turbine 5 is independently power turbines 9, often row's turbine rotor blade and stator all have certain established angle relative to gas turbine center line, airflow direction is changed when air-flow flows through stator, when flowing through movable vane, Aerodynamic force action is in movable vane, thus movable vane is pivoted, low-pressure turbine movable vane 14 is contrary with the established angle direction of high-pressure turbine movable vane 13, low-pressure turbine movable vane 14 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,
Power turbine is an independently power turbine 9 and be mechanically connected with load 10, power turbine stator 19 is identical with low-pressure turbine movable vane 14 established angle direction, power turbine movable vane 20 is identical with low-pressure turbine stator 12 established angle direction, thus obtains a kind of novel triple-spool counter rotating turbine.
The high-temperature fuel gas flowed out from firing chamber is with a certain speed
c0 flows to high-pressure turbine stator 11, and namely 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, and after this turns expansion, flow to cross section 2-2, combustion gas is with relative wind angle β 2 and relative air speed
w2 flow out, at this moment air-flow speed by
c1 becomes
c2, air-flow makes high pressure rotor 10 rotate clockwise to the active force that high-pressure turbine movable vane produces;
Combustion gas is again with a certain speed
c2 flow to low-pressure turbine stator 12 along α 2 airflow direction, and namely 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, turn after expanding with relative wind angle β 4 and relative air speed
w4 flow out from cross section 4-4, at this moment air-flow speed by
c3 become
c4, air-flow makes low pressure rotor 9 rotate along counterclockwise direction to the active force that low-pressure turbine movable vane 14 produces;
Combustion gas is subsequently with a certain speed
c10 flow to power turbine stator 19 along α 10 airflow direction, and namely air-flow flows to power turbine stator 19 from cross section 9-9, and air-flow flows out from cross section 10-10 after less turning back only occurs for this, and at this moment the flow direction of air-flow changes to α 11 from α 10, speed by
c10 become
c11; Then air-flow is with relative wind angle β 10 and relative air speed
w10 enter in power turbine movable vane 20, turn after expanding with relative wind angle β 11 and relative air speed
w11 flow out from cross section 11-11, at this moment air-flow speed by
c10 become
c11, air-flow makes power turbine 9 rotarily drive load 10 along clockwise direction to the active force that power turbine movable vane 20 produces to rotate.
Because the blade profile of low-pressure turbine stator 12 is different with established angle, make high-pressure turbine movable vane 13 contrary with the sense of rotation of low-pressure turbine movable vane 14, because high pressure rotor 8 rotates clockwise, and low pressure rotor 6 is along counterclockwise rotating, and the blade profile of power turbine stator 19 and established angle change, power turbine 9 is also rotated clockwise, in the process of air flow direction low-pressure turbine 4 and power turbine 5, airflow function is at low-pressure turbine stator 12, aerodynamical moment direction on power turbine stator 19 there occurs change, thus the resultant moment of force acted on casing 1 is made also correspondingly to reduce.
Adopting this novel triple-spool counter rotating turbine, by reducing the quantity of low-pressure turbine stator, power turbine stator, interstage pressure loss, the air quantity of cooling turbine and component weight can be reduced.
Claims (1)
1. a novel triple-spool counter rotating turbine, comprise, low-pressure turbine (4), high-pressure turbine (3) and power turbine (5), it is characterized in that: low-pressure turbine (4) is arranged on low pressure rotor (6), high-pressure turbine (3) is arranged on high pressure rotor (8), power turbine (5) is an independently rotor, low-pressure turbine movable vane (14) is contrary with the established angle direction of high-pressure turbine movable vane (13), low-pressure turbine movable vane (14) 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),
Power turbine is an independently power turbine (9) and be mechanically connected with load (10), power turbine stator (19) is identical with low-pressure turbine movable vane (14) established angle direction, power turbine movable vane (20) is identical with low-pressure turbine stator (12) established angle direction, thus obtains a kind of novel triple-spool counter rotating turbine.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520178716.0U CN204492897U (en) | 2015-03-28 | 2015-03-28 | Novel triple-spool counter rotating turbine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520178716.0U CN204492897U (en) | 2015-03-28 | 2015-03-28 | Novel triple-spool counter rotating turbine |
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| CN204492897U true CN204492897U (en) | 2015-07-22 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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2015
- 2015-03-28 CN CN201520178716.0U patent/CN204492897U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20151214 Address after: 150090 No. 35, Honghu Road, Yingbin Road, Harbin hi tech Development Zone, Heilongjiang, China Patentee after: Harbin broad power technology development Co., Ltd. Address before: 150000 Honghu Road, Daoli District, Heilongjiang, No. 35, Harbin Patentee before: No.703 Inst. China Ship Heavy Industry Group Co. |