KR102565985B1 - Exhaust diffuser system and gas turbine including the same - Google Patents

Abstract

The present invention relates to an exhaust diffuser system and a gas turbine including the same, and more particularly, to an exhaust diffuser system equipped with a vibration control device and a gas turbine including the same. According to the present invention, the exhaust diffuser system can effectively absorb vibrations generated in the gas turbine, and in addition, the durability of the gas turbine can be improved.

Description

Exhaust diffuser system and gas turbine including the same}

The present invention relates to an exhaust diffuser system and a gas turbine including the same, and more particularly, to an exhaust diffuser system equipped with a vibration control device and a gas turbine including the same.

A turbine is a mechanical device that obtains rotational force by impulse or reaction force using a flow of compressible fluid such as steam or gas, and includes a steam turbine using steam and a gas turbine using high-temperature combustion gas.

Among these, a gas turbine is largely composed of a compressor, a combustor, and a turbine. The compressor is provided with an air inlet for introducing air, and a plurality of compressor vanes and compressor blades are alternately arranged in a compressor casing.

The combustor supplies fuel to the compressed air compressed by the compressor and ignites it with a burner to generate high-temperature, high-pressure combustion gas.

In the turbine, a plurality of turbine vanes and turbine blades are alternately arranged in a turbine casing. In addition, the rotor is disposed so as to pass through the center of the compressor, the combustor, the turbine, and the exhaust chamber.

Both ends of the rotor are rotatably supported by bearings. Then, a plurality of disks are fixed to the rotor, and at the same time that each blade is connected, a drive shaft of a generator or the like is connected to an end of the exhaust chamber side.

Since these gas turbines do not have a reciprocating mechanism such as a piston of a 4-stroke engine, there is no mutual friction part such as a piston-cylinder, so the consumption of lubricating oil is extremely low. There are advantages.

Briefly explaining the operation of the gas turbine, high-temperature combustion gas is produced by mixing and combusting air compressed in a compressor with fuel, and the combustion gas thus produced is injected toward the turbine side. The injected combustion gas generates rotational force while passing through the turbine vanes and turbine blades, thereby causing the rotor to rotate.

Combustion gases passing through the turbine are discharged to the outside through an exhaust diffuser. In general, a gas turbine may vibrate due to rotation of a rotor and discharge of combustion gas from an exhaust diffuser. In addition, since the gas turbine operates in a high-temperature environment, vibration of the casing may be more severe due to thermal expansion of each component.

Registered Patent Publication No. 10-2032728 (2019.10.16.)

Based on the technical background as described above, the present invention provides an exhaust diffuser system in which a vibration control device is disposed so that vibration generated in a turbine casing can be reduced, and a gas turbine including the same.

An exhaust diffuser system according to an embodiment of the present invention includes a casing, an inner casing, a strut, and a vibration control member. The casing forms an outer shape, and a plurality of protrusions protruding radially outward are disposed. The inner casing is disposed in the inner space of the casing. A plurality of struts connect and support the casing and the inner casing. A plurality of vibration control members are formed of a rigid body and are disposed between the plurality of protrusions.

A coupling portion for coupling an outer end of the vibration control member to the protruding portion of the exhaust diffuser system according to an embodiment of the present invention may be formed.

The coupling portion of the exhaust diffuser system according to an embodiment of the present invention may be a sliding coupling portion into which the vibration control member is slidably inserted and coupled.

The vibration control member of the exhaust diffuser system according to an embodiment of the present invention may be coupled to the coupling part while forming a predetermined gap with the protruding part.

The strut of the exhaust diffuser system according to an embodiment of the present invention may be disposed at a position corresponding to the protrusion inside the casing.

The vibration control member of the exhaust diffuser system according to an embodiment of the present invention may include an inclined portion whose height decreases toward the outer end.

Each vibration control member of the exhaust diffuser system according to an embodiment of the present invention may include a plurality of control plates elongated in an arc direction of the casing.

The control plate of the exhaust diffuser system according to an embodiment of the present invention may include a plurality of first control plates elongated in an arc direction of the casing and a plurality of second control plates symmetrical to the first control plate.

In the vibration control member of the exhaust diffuser system according to an embodiment of the present invention, a simplate may be disposed between an inner end of the first control plate and an inner end of the second control plate.

Each of the vibration control members of the exhaust diffuser system according to an embodiment of the present invention may be formed of one rigid body.

A gas turbine according to an embodiment of the present invention includes a compressor, a combustor, a turbine, a casing, an inner casing, a strut, and a vibration control member. A compressor compresses air. The combustor mixes air compressed by a compressor with fuel and combusts it. The turbine includes turbine vanes fixed to guide combustion gases burned by the combustor, and turbine blades rotated by the combustion gases. A turbine is disposed inside the casing, forming an outer shape, and a plurality of protrusions protruding in a radially outward direction are disposed. The inner casing is disposed in the inner space of the casing. A plurality of struts connect and support the casing and the inner casing. A plurality of vibration control members are formed of a rigid body and are disposed between the plurality of protrusions.

The protruding part of the gas turbine according to an embodiment of the present invention may be formed with a coupling portion for coupling an outer end of the vibration control member.

The coupling portion of the gas turbine according to an embodiment of the present invention may be a sliding coupling portion into which the vibration control member is slidingly inserted and coupled.

The vibration control member of the gas turbine according to an embodiment of the present invention may be coupled to the coupling part while forming a predetermined gap with the protruding part.

The strut of the gas turbine according to an embodiment of the present invention may be disposed at a position corresponding to the protrusion inside the casing.

The vibration control member of a gas turbine according to an embodiment of the present invention may include an inclined portion whose height decreases toward an outer end.

Each of the vibration control members of the gas turbine according to an embodiment of the present invention may include a plurality of control plates elongated in the arc direction of the casing.

A control plate of a gas turbine according to an embodiment of the present invention may include a plurality of first control plates elongated in an arc direction of a casing and a plurality of second control plates symmetrical to the first control plate.

In the vibration control member of a gas turbine according to an embodiment of the present invention, a simplite may be disposed between an inner end of the first control plate and an inner end of the second control plate.

Each of the vibration control members of the gas turbine according to an embodiment of the present invention may be formed as one rigid body.

The exhaust diffuser system according to the present invention has an effect of effectively absorbing vibrations generated from a gas turbine and, in addition, improving durability of the gas turbine.

1 is a perspective view showing the inside of a gas turbine according to a first embodiment of the present invention.
FIG. 2 is a cross-sectional view showing a part of the gas turbine of FIG. 1 cut away.
3 is an enlarged view of a gas turbine in which a vibrating member is disposed according to a first embodiment of the present invention.
Figure 4 shows the rear of the gas turbine according to the first embodiment of the present invention.
5 is an enlarged view of a coupling part of a gas turbine according to a first embodiment of the present invention.
6 is an enlarged view of a vibration control member of a gas turbine according to a second embodiment of the present invention.
7 shows a state of a gas turbine in which a vibration control member according to a third embodiment of the present invention is disposed.
FIG. 8 is an enlarged view of the first flange portion in FIG. 7 .
9 shows a state of a gas turbine in which a vibration control member according to a fourth embodiment of the present invention is disposed.

Since the present invention can apply various transformations and have various embodiments, specific embodiments will be exemplified and described in detail in the detailed description. However, it should be understood that this is not intended to limit the present invention to specific embodiments, and includes all transformations, equivalents, and substitutes included in the spirit and scope of the present invention.

Terms used in the present invention are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly dictates otherwise. In the present invention, terms such as 'include' or 'have' are intended to designate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, but one or more other features It should be understood that the presence or addition of numbers, steps, operations, components, parts, or combinations thereof is not precluded.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. At this time, it should be noted that in the accompanying drawings, the same components are indicated by the same reference numerals as much as possible. In addition, detailed descriptions of well-known functions and configurations that may obscure the gist of the present invention will be omitted. For the same reason, in the accompanying drawings, some components are exaggerated, omitted, or schematically illustrated.

Hereinafter, a vibration control device according to the present invention and a gas turbine including the same will be described in detail with reference to the accompanying drawings.

1 is a perspective view showing the inside of a gas turbine according to a first embodiment of the present invention, FIG. 2 is a cross-sectional view showing a part of the gas turbine of FIG. 1 cut away, and FIG. 3 is a first embodiment of the present invention An enlarged view of a gas turbine in which a vibrating member according to the present invention is disposed, FIG. 4 is a view of the back of the gas turbine according to the first embodiment of the present invention, and FIG. 5 is a gas turbine according to the first embodiment of the present invention. It shows an enlarged view of the junction of .

Hereinafter, a gas turbine 1000 according to a first embodiment of the present invention will be described with reference to FIGS. 1 and 2 . The thermodynamic cycle of the gas turbine 1000 according to the first embodiment of the present invention may ideally follow the Brayton cycle. The Brayton cycle can be composed of four processes leading to isentropic compression (adiabatic compression), constant pressure rapid heat, isentropic expansion (adiabatic expansion), and constant pressure heat dissipation. In other words, atmospheric air is sucked in and compressed to high pressure, and fuel is burned in a constant pressure environment to release thermal energy. can That is, the cycle may be made in four processes of compression, heating, expansion, and heat dissipation.

As shown in FIG. 1 , a gas turbine 1000 realizing the above Brayton cycle may include a compressor 1100, a combustor 1200, a turbine 1300, and an exhaust diffuser system 1800. Although the following description will refer to FIG. 1 , the description of the present invention can be widely applied to a turbine engine having an equivalent configuration to the gas turbine 1000 exemplarily shown in FIG. 1 .

The compressor 1100 may intake and compress air from the outside. The compressor 1100 may supply compressed air compressed by the compressor blades 1130 to the combustor 1200 and may also supply cooling air to a high-temperature region in the gas turbine 1000 requiring cooling. At this time, since the sucked air undergoes an adiabatic compression process in the compressor 1100, the pressure and temperature of the air passing through the compressor 1100 increase.

The compressor 1100 is designed as centrifugal compressors or axial compressors. While centrifugal compressors are applied in small gas turbines, large gas turbines 1000 as shown in FIGS. 1 and 2 Since a large amount of air must be compressed, multi-stage axial flow compressors are generally applied. At this time, in the multi-stage axial flow compressor, the compressor blade 1130 rotates according to the rotation of the center tie rod 1120 and the rotor disk to compress the introduced air while moving the compressed air to the compressor vane 1140 at the rear stage. The air is compressed to a higher pressure while passing through the blades 1130 formed in multiple stages.

The compressor vane 1140 is mounted inside the housing 1150, and a plurality of compressor vanes 1140 may be mounted to form a stage. The compressor vane 1140 guides the compressed air moved from the front compressor blade 1130 to the rear compressor blade 1130 side. In one embodiment, at least some of the plurality of compressor vanes 1140 may be mounted to be rotatable within a predetermined range for adjusting the inflow of air. In addition, a guide vane 1170 may be installed in the compressor 1100 to control the flow rate of air introduced into the compressor 1100 .

The compressor 1100 may be driven using some of the power output from the turbine 1300 . To this end, as shown in FIG. 1 , the rotation axis of the compressor 1100 and the rotation axis of the turbine 1300 may be directly connected by a torque tube 1170 . In the case of the large gas turbine 1000, about half of the output produced by the turbine 1300 may be consumed to drive the compressor 1100.

Meanwhile, the combustor 1200 may mix compressed air supplied from the outlet of the compressor 1100 with fuel and perform constant pressure combustion to generate high-energy combustion gas. In the combustor 1200, the introduced compressed air is mixed with fuel and combusted to produce high-energy, high-temperature, high-pressure combustion gas, and the combustion gas temperature is raised to a heat resistance limit that the combustor and turbine parts can withstand through an isobaric combustion process.

A plurality of combustors 1200 may be arranged in a housing formed in a cell shape, and a burner including a fuel injection nozzle, a combustor liner forming a combustion chamber, and a connection between the combustor and the turbine It is composed of including a transition piece to be.

Meanwhile, high-temperature, high-pressure combustion gas from the combustor 1200 is supplied to the turbine 1300. As the supplied high-temperature and high-pressure combustion gas expands, impulse and reaction force are applied to the turbine blades 1330 of the turbine 1300 to generate rotational torque. , and power exceeding the power required to drive the compressor 1100 is used to drive a generator or the like.

The turbine 1300 includes a rotor disk 1310 and a plurality of turbine blades 1330 radially disposed on the rotor disk 1310, a turbine vane 1320 fixed so as not to rotate, and a turbine blade 1330 disposed outside ring segment 1350. The rotor disk 1310 has a substantially disk shape, and a plurality of grooves are formed on its outer periphery. The groove is formed to have a curved surface, and the turbine blade 1330 is inserted into the groove. The turbine blades 1330 may be coupled to the rotor disk 1310 in a dovetail or the like. The turbine vanes 1320 are fixed so as not to rotate and guide the flow direction of the combustion gas passing through the turbine blades 1330 . A ring segment 1350 for sealing may be installed outside the turbine blade 1330 . A plurality of ring segments 1350 are continuously arranged in the circumferential direction of the turbine 1300 to form a ring shape.

The exhaust diffuser system 1800 is installed at the rear end of the gas turbine 1000 and discharges combustion gas discharged from the turbine 1300. The exhaust diffuser system 1800 may include a casing 1360, an inner casing 1380, a strut 1400, a protrusion 1361, and a vibration control member 1500.

The casing 1360 has a tubular shape and prevents gas from leaking. The casing 1360 may have a circular longitudinal section. The casing 1360 surrounds the compressor 1100 and the turbine 1300, and forms an exhaust space ES at the rear end of the turbine 1300. The casing 1360 may be formed such that an inner diameter gradually increases towards the rear end.

The inner casing 1380 may be spaced apart from the casing 1360 to form an annular exhaust space ES, and may have a cone shape in which an inner diameter gradually decreases towards the rear end. Accordingly, the cross-sectional area of the exhaust space ES may gradually increase toward the rear end.

At least one protrusion 1361 is disposed on an outer circumferential surface of the casing 1360 , and the protrusion 1361 may be spaced apart from each other in a circumferential direction of the casing 1360 . However, the present invention is not limited thereto, and the protruding portion 1361 may protrude from the inner circumferential surface of the casing 1360 . The protrusion 1361 may be formed in a substantially T-shape.

The strut 1400 is disposed between the casing 1360 and the inner casing 1380, and connects the casing 1360 and the inner casing 1380. A plurality of struts 1400 may be provided, spaced apart from each other along the circumferential direction of the turbine 1300 and disposed radially. The strut 1400 may connect the casing 1360 and the inner casing 1380 and simultaneously support each other.

Hereinafter, an exhaust diffuser system according to a first embodiment of the present invention will be described in detail with reference to FIGS. 3 to 5 . An exhaust diffuser system according to the first embodiment of the present invention includes a casing 1360, an inner casing 1380, a strut 1400, and a vibration control member 1500.

The vibration control member 1500 includes a control plate 1510. A plurality of control plates 1510 may be provided. The control plate 1510 may have an arc-shaped plate shape, and in this case, it may be disposed on the outer circumferential surface of the casing 1360 so as to stand vertically in the width direction. When a plurality of control plates 1510 are provided, the respective control plates 1510 may be arranged to face each other.

The vibration control member 1500 may include a second flange 1530. The second flanges 1530 may be respectively disposed at both outer ends of the control plate 1510 . The second flange 1530 may be formed in a rectangular plate shape.

The vibration control member 1500 may be coupled to the protrusion 1361 . When two or more protrusions 1361 are disposed, the vibration control member 1500 may be disposed between the protrusions 1361 along the outer circumferential surface of the casing 1360 .

The strut 1400 is disposed between the casing 1360 and the inner casing 1380, and an end thereof may be disposed at a position corresponding to the protrusion 1361 of the casing 1360. Also, the strut 1400 may be arranged to be connected to the protrusion 1361 . In this case, passages through which cooling air flows may be formed in the protrusions 1361 and the struts 1400, respectively, and the flow of air introduced into the protrusions 1361 is continuously formed inside the struts 1400 so that the casing 1360 ) may flow into the inner space (ES). When the strut 1400 is disposed at a position corresponding to the protrusion 1361, as a result, the vibration control member 1500 may be disposed between each strut 1400.

A coupling portion 1370 to which the vibration control member 1500 is coupled is formed in the casing 1360 . The coupling portion 1370 may be formed on the protruding portion 1361 of the casing 1360 . The second flange 1530 may be coupled to the coupling part 1370 . In this case, the arc direction length of the vibration control member 1500 may be formed to correspond to the arc direction length between the protrusions 1361 of the casing 1360. The coupling portion 1370 may be integrally formed with the protruding portion 1361 . In this case, the coupling portion 1370 may be formed by processing the protruding portion 1361 . When the coupling part 1370 and the protruding part 1361 are integrally formed, there is no tolerance between them, so vibration can be effectively absorbed.

The coupling portion 1370 may be a sliding coupling portion 1370 . The vibration control member 1500 may be slidably inserted and coupled to the sliding coupling part 1370 . The sliding coupling part 1370 may include a first side wall 1371 and a second side wall 1372 . The first sidewall 1371 may be a sidewall extending from the sliding coupling part 1370 toward the control plate 1510 . The second sidewall 1372 may be a sidewall extending inwardly perpendicular to the first sidewall 1371 . A sliding groove 1373 may be formed by the first sidewall 1371 and the second sidewall 1372 . The second flange 1530 may be slidably inserted into the sliding groove 1373. At this time, the thickness of the second flange 1530 is not completely fitted into the sliding groove 1373, but may be coupled with a predetermined gap formed. In this case, there is an advantage in that the control plate 1510 and the second flange 1530 can be stably coupled even when they are thermally expanded.

6 is an enlarged view of a vibration control member of a gas turbine according to a second embodiment of the present invention.

Hereinafter, an exhaust diffuser system according to a second embodiment of the present invention will be described in detail with reference to FIG. 6 . Since the exhaust diffuser system according to the second embodiment of the present invention is the same as the exhaust diffuser system according to the first embodiment of the present invention except for the vibration control member 1500, a redundant description thereof will be omitted.

The vibration control member 1500 of the exhaust diffuser system according to the second embodiment of the present invention includes an inclined portion 1510a. Specifically, an inclined portion 1510a and a central portion 1510b may be formed in the control plate 1510 . The inclined portion 1510a is disposed at an outer end of the control plate 1510. The inclined portion 1510a may be formed to gradually decrease in height toward the outer end. A central portion 1510b is disposed between the inclined portions 1510a on both sides of the control plate 1510. The central portion 1510b may be formed to maintain a constant height along the longitudinal direction of the control plate 1510 . As a result, the control plate 1510 includes the inclined portion 1510a, so that the central portion has a high height and both ends thereof have a low height.

When the protrusion 1361 and the strut 1400 are disposed at positions corresponding to each other, the control plate 1510 is formed such that a portion close to the strut 1400 has a low height and a portion far from the strut 1400 has a high height. can That is, a portion of the adjusting plate 1510 may have greater rigidity than a portion close to the strut 1400 . The strut 1400 reduces vibrations generated in the exhaust diffuser system. Therefore, this structure of the adjusting plate 1510 has an advantage in that it can more effectively reduce vibration in a portion where the strut 1400 is not disposed.

FIG. 7 shows a state of a gas turbine in which a vibration control member according to a third embodiment of the present invention is disposed, and FIG. 8 is an enlarged view of a first flange portion in FIG. 7 .

Hereinafter, an exhaust diffuser system according to a third embodiment of the present invention will be described in detail with reference to FIGS. 7 and 8 . Since the exhaust diffuser system according to the third embodiment of the present invention is the same as the exhaust diffuser system according to the first embodiment of the present invention except for the vibration control member 1500, a redundant description thereof will be omitted.

In the exhaust diffuser system according to the third embodiment of the present invention, the vibration control member 1500 includes a first control plate 1510-1 and a second control plate 1510-2.

The control plate 1510 includes a first control plate 1510-1 and a second control plate 1510-2. The first control plate 1510 - 1 may be formed to elongate in the arc direction of the casing 1360 . The first control plate 1510-1 may have an arc-shaped plate shape, and in this case, it may be disposed so as to stand perpendicular to the outer circumferential surface of the casing 1360 in a width direction. The first control plate 1510-1 may be provided in one piece or in plural pieces. When a plurality of first control plates 1510-1 are provided, each of the first control plates 1510-1 may be disposed to face each other.

The second control plate 1510-2 is symmetrical to the first control plate 1510-1. That is, the shape of the second control plate 1510-2 is formed to be symmetrical with the first control plate 1510-1, and the second control plate 1510-2 is disposed to be symmetrical with the first control plate 1510-1. The second control plate 1510-2 has the same shape as the first control plate 1510-1, but may be arranged symmetrically with the first control plate 1510-1.

The first flange 1520 may include a 1-1st flange 1520-1 and a 1-2nd flange 1520-2. The 1-1 flange 1520-1 may be disposed at an inner end of the first control plate 1510-1. The first-second flange 1520-2 may be disposed at an inner end of the second control plate 1510-2. Each of the first flange 1520 and the first and second flanges 1520-2 may be formed in a rectangular plate shape.

The 1-1st flange 1520-1 and the 1-2nd flange 1520-2 may be coupled to each other. The 1-1 flange 1520-1 and the 1-2 flange 1520-2 may be coupled by a fixing member 1540 while facing each other. The fixing member 1540 may be provided with bolts and nuts. A hole into which the fixing member 1540 can be inserted may be formed in each of the 1-1 flange 1520-1 and the 1-2 flange 1520-2.

The fixing member 1540 may be a tension adjusting member 1540 . The tension adjusting member 1540 may adjust the tension of the first flange 1520 by adjusting the distance between the 1-1 flange 1520-1 and the 1-2 flange 1520-2. The tension adjusting member 1540 is provided as a bolt and a nut, and can adjust the tension of the first flange 1520 by adjusting the tightening of the bolt and nut.

The second flange 1530 may include a 2-1 flange 1530-1 and a 2-2 flange 1530-2. The 2-1 flange 1530-1 may be disposed at an outer end of the first control plate 1510-1. The 2-2 flange 1530-2 may be disposed at an outer end of the second control plate 1510-2. The 2-1st flange 1530-1 and the 2-2nd flange 1530-2 may each be formed in a rectangular plate shape.

A simplate 1570 may be disposed between the inner end of the first control plate 1510-1 and the inner end of the second control plate 1510-2. The simplate 1570 may be disposed between the 1-1st flange 1520-1 and the 1-2nd flange 1520-2. Although not shown in the drawing, the simplate 1570 may be disposed between the second flange 1530 and the coupling part 1370 .

The simplate 1570 may be formed of an elastic material such as rubber. In this case, there is an advantage in that the vibration generated in the casing 1360 can be more effectively absorbed while reducing the tolerance between adjacent components of the simplate 1570 . The simplate 1570 may be formed of a metal such as carbon steel or steel. In this case, a tolerance with neighboring components such as the first flange 1520 or the second flange 1530 of the simplate 1570 may be reduced. In addition, there is an advantage in that the durability of the simplate 1570 is maintained despite continuous use, and maintenance of the simplate 1570 is easy. In this case, the simplate 1570 disposed on the first flange 1520 and the simplate 1570 disposed on the second flange 1530 may be made of the same material or different materials. there is.

9 shows a state of a gas turbine in which a vibration control member according to a fourth embodiment of the present invention is disposed.

Hereinafter, an exhaust diffuser system according to a fourth embodiment of the present invention will be described in detail with reference to FIG. 9 . Since the exhaust diffuser system according to the fourth embodiment of the present invention is the same as the exhaust diffuser system according to the first embodiment of the present invention except for the vibration control member 1500, a redundant description thereof will be omitted.

In the exhaust diffuser system according to the fourth embodiment of the present invention, the vibration control member 1500 is formed as a single rigid body. Specifically, the vibration control member 1500 may include the controller 1510. Unlike the control plate 1510 of the vibration control member 1500 according to the first embodiment of the present invention, the controller 1510 may be formed in a single lump shape. In this case, when the vibration control member 1500 includes the control body 1510, the mass of the vibration control member 1500 may greatly increase. When the mass of the vibration control member 1500 is increased, strong vibration can be more effectively reduced. Therefore, the vibration control member 1500 including the controller 1510 is used when there is insufficient space to place the vibration control member 1500 on the outer circumferential surface of the casing 1360 or when strong vibration is formed in the casing 1360. In this case, it has the advantage of being able to effectively reduce vibration.

Although one embodiment of the present invention has been described above, those skilled in the art can add, change, delete, or add components within the scope not departing from the spirit of the present invention described in the claims. It will be possible to variously modify and change the present invention by the like, and it will be said that such modifications and changes are also included within the scope of the present invention.

1360: casing 1361: protrusion
1370: coupling part, sliding coupling part
1371: first side wall 1372: second side wall
1373: sliding groove
1380: inner casing
1400: strut
1500: vibration control member
1510: control plate, controller
1510-1: first control plate 1510-2: second control plate
1510a: inclined portion 1510b: central portion
1520: first flange
1520-1: 1-1 flange 1520-2: 1-2 flange
1530: second flange
1540: fixing member, tension adjusting member
1570: Simlate

Claims (20)

casing;
a plurality of protrusions spaced apart from each other in a circumferential direction on an outer circumferential surface of the casing and protruding in a radially outward direction;
an inner casing disposed in an inner space of the casing;
a plurality of struts connecting and supporting the casing and the inner casing; and,
a plurality of vibration control members formed in an arc-shaped plate shape and including a plurality of control plates disposed between the plurality of protrusions so that the width direction is perpendicular to the outer circumferential surface of the casing;
Exhaust diffuser system comprising a. According to claim 1,
In the protrusion,
An exhaust diffuser system in which a coupling part is formed for coupling an outer end of the vibration control member. According to claim 2,
The coupling part,
An exhaust diffuser system that is a sliding coupling part into which the vibration control member is slidingly inserted and coupled. According to claim 2,
The vibration control member,
An exhaust diffuser system coupled to the coupling part while forming a predetermined distance gap with the protrusion part. According to claim 1,
The strut,
An exhaust diffuser system disposed in a position corresponding to the protrusion inside the casing. According to claim 1,
The vibration control member,
Exhaust diffuser system including an inclined portion whose height decreases toward the outer end. delete According to claim 1,
The control panel,
An exhaust diffuser system comprising a plurality of first control plates elongated in an arc direction of the casing, and a plurality of second control plates symmetrical with the first control plates. According to claim 8,
The vibration control member,
An exhaust diffuser system, wherein a simplate is disposed between an inner end of the first control plate and an inner end of the second control plate. According to claim 1,
Each of the vibration control members,
Exhaust diffuser system formed from one rigid body. A compressor that compresses air;
a combustor that mixes the air compressed by the compressor with fuel and combusts it;
a turbine including a turbine vane fixed to guide combustion gas burned by the combustor, and turbine blades rotated by the combustion gas;
a casing in which the turbine is disposed;
a plurality of protrusions spaced apart from each other in a circumferential direction on an outer circumferential surface of the casing and protruding in a radially outward direction;
an inner casing disposed in an inner space of the casing;
a plurality of struts connecting and supporting the casing and the inner casing; and
A gas turbine comprising a vibration control member formed in an arc-shaped plate shape and including a plurality of control plates disposed between the plurality of protrusions such that a width direction is perpendicular to an outer circumferential surface of the casing. According to claim 11,
In the protrusion,
A gas turbine in which a coupling part is formed for coupling an outer end of the vibration control member. According to claim 12,
The coupling part,
A gas turbine that is a sliding coupling part into which the vibration control member is slidingly inserted and coupled. According to claim 12,
The vibration control member,
A gas turbine coupled to the coupling part while forming a predetermined distance gap with the protruding part. According to claim 11,
The strut,
A gas turbine disposed in a position corresponding to the protrusion inside the casing. According to claim 11,
The vibration control member,
A gas turbine comprising a slope whose height decreases toward the outer end. delete According to claim 11,
The control panel,
A gas turbine comprising a plurality of first control plates elongated in an arc direction of the casing, and a plurality of second control plates symmetrical with the first control plates. According to claim 18,
The vibration control member,
A gas turbine in which a simplate is disposed between an inner end of the first control plate and an inner end of the second control plate. According to claim 11,
Each of the vibration control members,
A gas turbine formed as a single rigid body.

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