CN202348444U - Adjustable guide vane system for power turbine of gas turbine - Google Patents
Adjustable guide vane system for power turbine of gas turbine Download PDFInfo
- Publication number
- CN202348444U CN202348444U CN 201120544227 CN201120544227U CN202348444U CN 202348444 U CN202348444 U CN 202348444U CN 201120544227 CN201120544227 CN 201120544227 CN 201120544227 U CN201120544227 U CN 201120544227U CN 202348444 U CN202348444 U CN 202348444U
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- guide vane
- adjustable guide
- turbine
- shaft
- teunnion
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Abstract
The utility model discloses an adjustable guide vane system for a power turbine of a gas turbine, relates to an adjustable guide vane system for a turbine, and aims to solve the problem that the conventional adjustable guide vane system for the power turbine of the gas turbine has a complex sealing structure and low operating stability. The other end of a rocker arm is connected with the upper end of a ceramic rotating shaft; a second bearing bush is arranged on an upper end face of a case; the adjustable guide vane consists of an upper guide vane shaft, a lower guide vane shaft and an adjustable guide vane main body; the upper guide vane shaft, the adjustable guide vane main body and the lower guide vane shaft are fixedly arranged into a whole in turn from top to bottom; the upper guide vane shaft is coaxial to the lower guide vane shaft; a ceramic shaft sleeve is sleeved on the upper guide vane shaft; the upper end of the upper guide vane shaft passes through the case and is fixedly connected with the ceramic rotating shaft; an end cover is fixedly arranged on an upper end face of the second bearing bush; a flexible graphite shaft sleeve is sleeved on the lower guide vane shaft; and a left half cylinder and a right half cylinder are fixedly assembled into a whole. The adjustable guide vane system for the turbine is used for adjusting the through-flow capacity of a turbine stage.
Description
Technical field
The utility model relates to a kind of turbine adjustable guide vane system, is specifically related to a kind of Gas Turbine Power turbine adjustable guide vane system.
Background technique
An outstanding feature of gas turbine is the reduction along with operating conditions, and its output power, the thermal efficiency reduce rapidly.Therefore adopt power turbine adjustable guide vane system can improve power and the thermal efficiency of unit under part off-design behaviour environment.Up to the present; The external Gas Turbine Power turbine adjustable guide vane system that on engineering, uses mainly comprises: the WR21 type gas turbine of the U.S.; Through cold between adopting, backheat and adjustable vane technology, this type gas turbine reaches 30% more than than the annual fuel oil of practicing thrift of the simple cycle gas turbine engine of equal power level.The power turbine adjustable guide vane can play an important role in the unit debug process, can effectively solve between turbine and turbine and gas compressor between optimum matching problem, thereby can improve under the off-design behaviour of gas turbine part the Economy of operation significantly.
Dr.A.stodola is one of people who proposes the earliest the variable geometry turbine notion.He uses the equipment of removable wall in the rectangular nozzle passage of a steam turbine of nineteen twenty-seven proposition.This equipment is through throat opening area that changes nozzle and the expansion ratio that discharge area is optimized nozzle.Afterwards, switching political loyalty had been widely used in the high pressure ratio axial flow compressor apart from propulsion device and removable stator blade, to optimize the operation of propulsion device and motor.
But to be prone to that stuck phenomenon, functional reliability take place low because of elevated temperature heat expands between the seal structure complex of existing Gas Turbine Power turbine adjustable guide vane system and rotating shaft and the axle sleeve.
The model utility content
The utility model is for solving the seal structure complex and the low problem of functional reliability of existing Gas Turbine Power turbine adjustable guide vane system, and then a kind of Gas Turbine Power turbine adjustable guide vane system is provided.
The utility model is to solve the problems of the technologies described above the technological scheme of taking to be: the Gas Turbine Power turbine adjustable guide vane system of the utility model comprises casing, front casing cover, first steel band, second steel band, rear casing cover, guide rail, roller, interlock ring, jump ring, clutch shaft bearing cover, second bearing housing, ceramic rotating shaft, rocking arm, end cap, inner can, switching tube, flange, retaining ring, adjustable guide vane, ball bearing, dial, pointer, Ceramic shaft sleeve, backplate, half on a left side, Expanded graphite axle sleeve, right half, two shift forks, two tighteners, two pressurized struts and a plurality of silicate fiber acupuncture carpet veneer; Said first steel band is installed on the upper-end surface of front casing cover; Said second steel band is installed on the upper-end surface of rear casing cover; Said front casing cover, rear casing cover, backplate and retaining ring are installed on the casing successively, are equipped with silicate fiber acupuncture carpet veneer between said front casing cover, rear casing cover, backplate and retaining ring and the casing; The lower end of said guide rail is packed on the upper-end surface of casing, and said interlock ring is rotationally connected through the upper end of roller and guide rail, and said clutch shaft bearing cover is installed in the interlock ring through jump ring; an end of rocking arm is provided with ball bearing, and said ball bearing is installed in the clutch shaft bearing cover, and the other end of rocking arm is connected with the upper end of ceramic rotating shaft; said second bearing housing is installed on the upper-end surface of casing, and said adjustable guide vane is by last guide vane teunnion, guide vane teunnion and adjustable guide vane main body constitute down, and said guide vane teunnion, adjustable guide vane main body and the following guide vane teunnion gone up from top to bottom installs successively and be one; said to go up guide vane teunnion coaxial with following guide vane teunnion, and said Ceramic shaft sleeve is sleeved on the guide vane teunnion, and it is affixed with ceramic rotating shaft that casing is passed in said upper end of going up guide vane teunnion; said end cap is packed on the upper-end surface of second bearing housing, and said Expanded graphite axle sleeve is sleeved on down on the guide vane teunnion, and half on a said left side is loaded into one with right half; said guide vane teunnion down is installed in the half formed cylindrical shell in half on a left side and the right side; said flange is packed on the end of inner can, forms groove between said flange and the inner can, and half on a said left side and half on the right side are positioned at groove; a said lower end that is packed in inner can of transferring; be provided with silicate fiber acupuncture carpet veneer between said switching tube and the inner can, said two pressurized strut symmetries are installed in the both sides of casing, the lower end of each tightener and a corresponding pressurized strut connection; the upper end of each tightener is connected with a shift fork; two shift forks are connected with the sidewall of adjustable guide vane, and said dial is packed on the end cap, and said pointer is packed in the upper end of ceramic rotating shaft.
The beneficial effect of the utility model is: the Gas Turbine Power turbine adjustable guide vane system of the utility model has adopted ceramic rotating shaft and Ceramic shaft sleeve to seal, and still can freely rotate because of elevated temperature heat expands between rotating shaft and the axle sleeve; The Expanded graphite axle sleeve has reduced the gas leakage loss that can quote because of stator, has guaranteed that ride quality obtains bigger improvement under the off-design behaviour of gas turbine part, moves safer; The Gas Turbine Power turbine adjustable guide vane system gas turbine of the utility model has improved the slow-speed of revolution stability of work down, reduces the fuel consume of gas turbine part operating mode; The utility model also has compact structure, easy to operate advantage.
Description of drawings
Fig. 1 is the main sectional view of the adjustable guide vane system of the utility model, Fig. 2 be the D of Fig. 1 to view, Fig. 3 is the A-A sectional view of Fig. 1, Fig. 4 be the E of Fig. 2 to view, Fig. 5 is the B-B sectional view of Fig. 4, Fig. 6 is the I portion enlarged view of Fig. 1.
Embodiment
Embodiment one: shown in Fig. 1～6; The Gas Turbine Power turbine adjustable guide vane system of this mode of execution comprises casing 1, front casing cover 2, first steel band 3, second steel band 21, rear casing cover 5, guide rail 6, roller 7, interlock ring 8, jump ring 9, clutch shaft bearing cover 10, second bearing housing 11, ceramic rotating shaft 12, rocking arm 14, end cap 15, inner can 18, switching tube 19, flange 20, retaining ring 23, adjustable guide vane 24, ball bearing 33, dial 35, pointer 36, Ceramic shaft sleeve 37, backplate 38, half 39 on a left side, Expanded graphite axle sleeve 40, right half 42, two shift fork 29, two tighteners 28, two pressurized struts 25 and a plurality of silicate fiber acupuncture carpet veneers 4; Said first steel band 3 is installed on the upper-end surface of front casing cover 2; Said second steel band 21 is installed on the upper-end surface of rear casing cover 5; Said front casing cover 2, rear casing cover 5, backplate 38 and retaining ring 23 are installed on the casing 1 successively, are equipped with silicate fiber acupuncture carpet veneer 4 between said front casing cover 2, rear casing cover 5, backplate 38 and retaining ring 23 and the casing 1; The lower end of said guide rail 6 is packed on the upper-end surface of casing 1, and said interlock ring 8 is rotationally connected through roller 7 upper end with guide rail 6, and said clutch shaft bearing cover 10 is installed in the interlock ring 8 through jump ring 9; end of rocking arm 14 is provided with ball bearing 33, and said ball bearing 33 is installed in the clutch shaft bearing cover 10, and the other end of rocking arm 14 is connected with the upper end of ceramic rotating shaft 12; said second bearing housing 11 is installed on the upper-end surface of casing 1, and said adjustable guide vane 24 is by last guide vane teunnion 24-1, guide vane teunnion 24-2 and adjustable guide vane main body 24-3 constitute down, and said guide vane teunnion 24-1, adjustable guide vane main body and the following guide vane teunnion 24-2 of going up from top to bottom installs successively and be one; said to go up guide vane teunnion 24-1 coaxial with following guide vane teunnion 24-2; said Ceramic shaft sleeve 37 is sleeved on the guide vane teunnion 24-1, and it is affixed with ceramic rotating shaft 12 that casing 1 is passed in said upper end of going up guide vane teunnion 24-1, and said end cap 15 is packed on the upper-end surface of second bearing housing 11; said Expanded graphite axle sleeve 40 is sleeved on down on the guide vane teunnion 24-2; half 39 on a said left side is loaded into one with right half 42, and said guide vane teunnion 24-2 down is installed in half 39 on a left side and the right half 42 formed cylindrical shell, and said flange 20 is packed on the end of inner can 18; formation groove 22 between said flange 20 and the inner can 18; half 39 on a said left side and half 42 on the right side are positioned at groove 22, said transfer tins 19 be packed in inner can 18 the lower end, be provided with silicate fiber acupuncture carpet veneer 4 between said switching tube 19 and the inner can 18; said two pressurized strut 25 symmetries are installed in the both sides of casing 1; lower end of each tightener 28 is Yu a Dui Ying pressurized strut 25 Lian Jies, and the upper end of each tightener 28 is connected with 29, two shift forks 29 of a shift fork and is connected Yu the sidewall of adjustable guide vane 24; said dial 35 is packed on the end cap 15, and said pointer 36 is packed in the upper end of ceramic rotating shaft 12.
Embodiment two: like Fig. 1 and shown in Figure 5, the said turbine adjustable guide vane of this mode of execution system also comprises Graphite pad 13, and said Graphite pad 13 is between end cap 15 and ceramic rotating shaft 12.So design, flexible graphite gasket 13 have reduced the gas leakage loss that can quote because of stator, have guaranteed that ride quality obtains bigger improvement under the off-design behaviour of gas turbine part, move safer.Other composition and Placement are identical with embodiment one.
Embodiment three: as shown in Figure 1, the said turbine adjustable guide vane of this mode of execution system also comprises first pad 16, and said first pad 16 is between the end cap 15 and second bearing housing 11.Other composition and Placement are identical with embodiment one or two.
Embodiment four: as shown in Figure 1, the said turbine adjustable guide vane of this mode of execution system also comprises second pad 17, and said second pad 17 is between last guide vane teunnion 24-1 and ceramic rotating shaft 12.Other composition and Placement are identical with embodiment three.
Working principle: shown in Fig. 1～6; Turbine adjustable guide vane system is connected with gas generator; Flow passage component is made up of front casing cover 2, rear casing cover 5, backplate 38, retaining ring 23, switching tube 19, inner can 18 and flange 20 jointly, wherein between casing 1 and jacket 2, rear casing cover 5 and backplate 38, doses aluminum silicate fiber thorn felt 4 and is used for hindering heat.The high-temperature fuel gas that comes from gas generator gets into power turbine via adjustable guide vane 24 and drives the rotation of rotor wasted work axle; When the gas turbine variable parameter operation; Pressurized strut 25 motion drives tighteners 28 actions, thereby makes two shift forks 29 will link the semi-ring up and down of ring 8 tight, and interlock ring 8 drives ceramic rotating shaft 12 rotations through the pivoted arms 14 of ball bearing 33; The interlock ring links to each other with all adjustable guide vanes; Guarantee all adjustable guide vane co-rotation, but when taking place the rotating shaft 24 of rotating vane sheet, together rotate assurance system proper functioning but can drive Ceramic shaft sleeve 37 through rotating vane sheet rotating shaft 24 with 37 armfuls of phenomenons of Ceramic shaft sleeve; Pottery rotating shaft 12 drives adjustable guide vane 24 and rotates, and through the through-current capability that turbine stage is regulated in the rotation angle change throat opening area realization of adjustable guide vane 24, the output work of control turbine is mated with the characteristic of adjusting turbine stage, reduces the purpose of fuel consume.
When gas turbine engine systems is worked, because casing 1 inside and outside differential pressure, ceramic rotating shaft 13 will compress flexible graphite gasket, and flexible graphite gasket guarantees the adjustable guide vane top seal through distortion.But Expanded graphite axle sleeve 40 can guarantee sealing through choosing interference fit with the 24 bottom rotating shafts of rotating vane sheet; But reduce gas leakage through choosing little Spielpassung between Ceramic shaft sleeve 37 and the 24 top rotating shafts of rotating vane sheet.
The angular orientation of blade is indicated on dial 35 by pointer 36, through pressurized strut control, the limit position-10 of blade rotation design spends according to the real work operating mode of motor in the adjusting of the rotation angle of blade+10 degree between.
Claims (4)
1. Gas Turbine Power turbine adjustable guide vane system; Said turbine adjustable guide vane system comprises casing (1), front casing cover (2), first steel band (3), second steel band (21), rear casing cover (5), guide rail (6), roller (7), interlock ring (8), jump ring (9), clutch shaft bearing cover (10), second bearing housing (11), ceramic rotating shaft (12), rocking arm (14), end cap (15), inner can (18), switching tube (19), a flange (20), retaining ring (23), adjustable guide vane (24), ball bearing (33), dial (35), pointer (36), Ceramic shaft sleeve (37), backplate (38), a left side half (39), Expanded graphite axle sleeve (40), right half (42), two shift forks (29), two tighteners (28), two pressurized struts (25) and a plurality of silicate fiber acupuncture carpet veneers (4); Said first steel band (3) is installed on the upper-end surface of front casing cover (2); Said second steel band (21) is installed on the upper-end surface of rear casing cover (5); Said front casing cover (2), rear casing cover (5), backplate (38) and retaining ring (23) are installed on the casing (1) successively, are equipped with silicate fiber acupuncture carpet veneer (4) between said front casing cover (2), rear casing cover (5), backplate (38) and retaining ring (23) and the casing (1); It is characterized in that: the lower end of said guide rail (6) is packed on the upper-end surface of casing (1); Said interlock ring (8) is rotationally connected through the upper end of roller (7) with guide rail (6); Said clutch shaft bearing cover (10) is installed in the interlock ring (8) through jump ring (9), and one end of rocking arm (14) is provided with ball bearing (33), and said ball bearing (33) is installed in the clutch shaft bearing cover (10); the other end of rocking arm (14) is connected with the upper end of ceramic rotating shaft (12); said second bearing housing (11) is installed on the upper-end surface of casing (1), and said adjustable guide vane (24) is by last guide vane teunnion (24-1), guide vane teunnion (24-2) constitutes with adjustable guide vane main body (24-3) down, and said guide vane teunnion (24-1), adjustable guide vane main body and the following guide vane teunnion (24-2) gone up from top to bottom installs successively and be one; said to go up guide vane teunnion (24-1) coaxial with following guide vane teunnion (24-2); said Ceramic shaft sleeve (37) is sleeved on the guide vane teunnion (24-1), and it is affixed with ceramic rotating shaft (12) that casing (1) is passed in said go up guide vane teunnion (24-1) upper end, and said end cap (15) is packed on the upper-end surface of second bearing housing (11); said Expanded graphite axle sleeve (40) is sleeved on down on the guide vane teunnion (24-2); a said left side half (39) and the right side half (42) are loaded into one, said under guide vane teunnion (24-2) be installed in half (42) the formed cylindrical shell in left half (39) and the right side, said flange (20) is packed on one end of inner can (18); said flange (20) is Yu form groove (22) between the inner can (18); a said left side half (39) He & CAT[N
2. Gas Turbine Power turbine adjustable guide vane according to claim 1 system is characterized in that: said turbine adjustable guide vane system also comprises Graphite pad (13), and said Graphite pad (13) is positioned between end cap (15) and the ceramic rotating shaft (12).
3. Gas Turbine Power turbine adjustable guide vane according to claim 1 and 2 system is characterized in that: said turbine adjustable guide vane system also comprises first pad (16), and said first pad (16) is positioned between end cap (15) and second bearing housing (11).
4. Gas Turbine Power turbine adjustable guide vane according to claim 3 system is characterized in that: said turbine adjustable guide vane system also comprises second pad (17), and said second pad (17) is positioned between guide vane teunnion (24-1) and the ceramic rotating shaft (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120544227 CN202348444U (en) | 2011-12-22 | 2011-12-22 | Adjustable guide vane system for power turbine of gas turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120544227 CN202348444U (en) | 2011-12-22 | 2011-12-22 | Adjustable guide vane system for power turbine of gas turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202348444U true CN202348444U (en) | 2012-07-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120544227 Withdrawn - After Issue CN202348444U (en) | 2011-12-22 | 2011-12-22 | Adjustable guide vane system for power turbine of gas turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202348444U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102410088A (en) * | 2011-12-22 | 2012-04-11 | 中国船舶重工集团公司第七�三研究所 | Adjustable guide vane system of gas turbine power turbine |
| CN108167031A (en) * | 2018-03-06 | 2018-06-15 | 哈尔滨广瀚燃气轮机有限公司 | A kind of gas turbine adjustable guide vane executing agency |
| CN114320615B (en) * | 2021-12-13 | 2024-05-17 | 中国船舶重工集团公司第七0三研究所 | Rotatable guide vane rotating mechanism of gas turbine compressor |
-
2011
- 2011-12-22 CN CN 201120544227 patent/CN202348444U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102410088A (en) * | 2011-12-22 | 2012-04-11 | 中国船舶重工集团公司第七�三研究所 | Adjustable guide vane system of gas turbine power turbine |
| CN102410088B (en) * | 2011-12-22 | 2013-08-28 | 中国船舶重工集团公司第七�三研究所 | Adjustable guide vane system of gas turbine power turbine |
| CN108167031A (en) * | 2018-03-06 | 2018-06-15 | 哈尔滨广瀚燃气轮机有限公司 | A kind of gas turbine adjustable guide vane executing agency |
| CN114320615B (en) * | 2021-12-13 | 2024-05-17 | 中国船舶重工集团公司第七0三研究所 | Rotatable guide vane rotating mechanism of gas turbine compressor |
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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: 20120725 Effective date of abandoning: 20130828 |
|
| RGAV | Abandon patent right to avoid regrant |