KR20240099989A - Sealing device and rotational machine having the same - Google Patents

Abstract

The present invention provides a sealing device capable of preventing leakage at a connected portion and a rotating machine including the same.
The sealing device according to one aspect of the present invention seals the gap between the first part and the second part in which the mounting groove is formed, and includes a bar-shaped base part connected in one direction and a support jaw protruding outward in the radial direction from the base part. and a blocking protrusion protruding from the base portion to fill the gap, wherein a coupling protrusion is formed on one longitudinal end of the sealing device, and the coupling protrusion of a neighboring sealing device is inserted into the other longitudinal end. A coupling groove may be formed.

Description

SEALING DEVICE AND ROTATIONAL MACHINE HAVING THE SAME}

The present invention relates to a sealing device and a rotating machine including the same, and more specifically, to a sealing device with improved sealing performance and a rotating machine including the same.

A rotating machine refers to a device that generates power for power generation through fluid (particularly gas) passing through the rotating machine. Therefore, rotating machines typically include rotating blades and non-rotating vanes that guide the flow.

Looking at turbines among rotating machines, a turbine is a mechanical device that obtains rotational force through impulse or reaction force using the flow of compressible fluid such as steam or gas. It includes steam turbines that use steam and gas turbines that use high-temperature combustion gas. there is.

Among these, the gas turbine largely consists of a compressor, combustor, and turbine. The compressor is provided with an air inlet for introducing air, and a plurality of compressor vanes and compressor blades are alternately arranged within the compressor housing.

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

The turbine has a plurality of turbine vanes and turbine blades arranged alternately within a turbine housing. Additionally, the rotor is arranged to penetrate the center of the compressor, combustor, turbine, and exhaust chamber.

Both ends of the rotor are rotatably supported by bearings. Then, a plurality of disks are fixed to the rotor, each blade is connected, and a drive shaft such as a generator is connected to an end on the side of the exhaust chamber.

Since these gas turbines do not have a reciprocating mechanism such as the piston of a four-stroke engine, there is no mutual friction such as a piston-cylinder, so the consumption of lubricant is extremely low. The amplitude, which is a characteristic of a reciprocating machine, is greatly reduced, and high-speed movement is possible. There is an advantage.

To briefly explain the operation of a gas turbine, air compressed in a compressor is mixed with fuel and burned to produce high-temperature combustion gas, and the resulting combustion gas is injected toward the turbine. As the injected combustion gas passes through the turbine vanes and turbine blades, it generates rotational force, causing the rotor to rotate.

A gas turbine is a power engine that mixes compressed air and fuel in a compressor, combusts them, and rotates the turbine with the high-temperature gas generated by combustion. Gas turbines are used to drive generators, aircraft, ships, trains, etc.

Generally, a gas turbine includes a compressor, combustor, and turbine. The compressor takes in outside air, compresses it, and then delivers it to the combustor. The air compressed in the compressor is at high pressure and temperature. The combustor mixes compressed air and fuel introduced from the compressor and combusts them. Combustion gases generated from combustion are discharged to the turbine. The combustion gas causes the turbine blades inside the turbine to rotate, thereby generating power. The generated power is used in various fields such as power generation and driving mechanical devices.

The turbine includes a turbine stator and a turbine rotor, and the turbine stator may include a turbine casing, a holder disposed radially inside the turbine casing, and a turbine vane and ring segment coupled to the inner peripheral surface of the holder. And the turbine rotor includes a turbine disk and a turbine blade coupled to the outer peripheral surface of the turbine disk.

Combustion gas or steam flows inside the holder, and the combustion gas or steam supplies kinetic energy to rotate the turbine blades assembled on the turbine rotor. Since the efficiency of converting the energy of combustion gas or steam into kinetic energy is inversely proportional to the amount of leakage of the fluid, leakage outside the intended fluid flow path inside the holder must be minimized. In order to minimize leakage, there must be a reliable seal between the separated holder parts.

Republic of Korea Patent Publication No. 10-2206061 (2021.01.15)

The present invention provides a sealing device capable of preventing leakage at a connected portion and a rotating machine including the same.

The sealing device according to one aspect of the present invention seals the gap between the first part and the second part in which the mounting groove is formed, and includes a bar-shaped base part connected in one direction and a support jaw protruding outward in the radial direction from the base part. and a blocking protrusion protruding from the base portion to fill the gap, wherein a coupling protrusion is formed on one longitudinal end of the sealing device, and the coupling protrusion of a neighboring sealing device is inserted into the other longitudinal end. A coupling groove may be formed.

The engaging protrusion according to one aspect of the present invention is formed to be connected to one edge of the sealing device, and the edge is inserted into the gap and may be located at a radial inner end.

The coupling protrusion according to one aspect of the present invention may be formed extending from the area where the blocking protrusion is formed to the area where the base portion is formed.

According to one aspect of the present invention, the base portion is connected in an arc shape, and a plurality of sealing devices can be combined to form a ring.

In the coupling protrusion according to one aspect of the present invention, a surface facing radially inward and a surface facing in the axial direction but facing outside of the coupling groove are connected to the surface of the sealing device, and the surface and the axis facing radially outward are connected to the surface of the sealing device. The surface facing the inside of the coupling groove may be spaced apart from the surface of the sealing device.

The first part and the second part according to one aspect of the present invention may be made of a holder that supports the vane and ring segment of the turbine.

An inclined surface is formed between the engaging protrusion and a side of the sealing device according to one aspect of the present invention, and the inclined surface may be connected to a surface facing outward in the radial direction of the engaging protrusion and a surface facing inside of the engaging groove in the engaging protrusion.

An extension portion that contacts the inclined surface and supports the inclined surface may be formed in the coupling groove according to one aspect of the present invention.

According to one aspect of the present invention, a first blocking rib extending in the longitudinal direction of the sealing device is formed on a surface facing radially outward from the coupling protrusion, and a first blocking rib extending in the longitudinal direction of the sealing device is formed on a surface facing in the axial direction but facing the inside of the coupling groove of the sealing device. A second blocking rib extending in the longitudinal direction may be formed.

A third blocking rib having a first line extending axially and a second line extending radially from the first line may be formed on the side of the sealing device on which the engaging protrusion according to one aspect of the present invention is formed.

A rotating machine according to another aspect of the present invention includes a plurality of rotating blades, a plurality of vanes disposed between the blades spaced apart in the axial direction and guiding the flow, and a ring maintaining a gap facing the outer ends of the blades. A holder including a segment, a first part and a second part supporting the ring segment and the vane and connected in an axial direction, and a plurality of sealing devices for sealing between the first part and the second part, 1 A mounting groove is formed in the part, and the sealing device includes a rod-shaped base portion connected in one direction, a support jaw protruding radially outward from the base portion, and a blocking protrusion protruding from the base portion to fill the gap. A coupling protrusion may be formed on one longitudinal end of the sealing device, and a coupling groove into which the coupling protrusion of an adjacent sealing device may be inserted may be formed on the other longitudinal end.

The engaging protrusion according to another aspect of the present invention is formed to be connected to one edge of the sealing device, and the edge is inserted into the gap and may be located at a radially inner end.

The coupling protrusion according to another aspect of the present invention may be formed extending from the area where the blocking protrusion is formed to the area where the base portion is formed.

According to another aspect of the present invention, the base portion is connected in an arc shape, and a plurality of sealing devices can be combined to form a ring.

According to another aspect of the present invention, a surface of the engaging protrusion facing radially inward and a surface facing axially but facing outward of the coupling groove are connected to the surface of the sealing device, and the surface and the axis facing radially outward are connected to the surface of the sealing device. The surface facing the inside of the coupling groove may be spaced apart from the surface of the sealing device.

The first part and the second part according to another aspect of the present invention may be formed as a holder supporting the vane and ring segment of the turbine.

According to another aspect of the present invention, an inclined surface is formed between the engaging protrusion and a side of the sealing device, and the inclined surface may be connected to a surface facing outward in the radial direction of the engaging protrusion and a surface facing inside of the engaging groove in the engaging protrusion.

The coupling groove according to another aspect of the present invention may be formed with an expansion portion that contacts the inclined surface and supports the inclined surface.

According to another aspect of the present invention, a first blocking rib extending in the longitudinal direction of the sealing device is formed on a surface facing radially outward from the coupling protrusion, and a first blocking rib extending in the longitudinal direction of the sealing device is formed on a surface facing in the axial direction but facing inside of the coupling groove of the sealing device. A second blocking rib extending in the longitudinal direction may be formed.

A third blocking rib having a first line extending in the axial direction and a second line extending radially from the first line may be formed on the side of the sealing device on which the engaging protrusion according to another aspect of the present invention is formed.

Since the sealing device according to one aspect of the present invention includes a base portion, a support jaw, and a blocking protrusion, the gap can be stably sealed. Additionally, a coupling protrusion is formed on one longitudinal end of the sealing device, and a coupling groove is formed on the other end, thereby preventing leakage between the sealing devices.

1 is a partially cut-away perspective view of a gas turbine according to a first embodiment of the present invention.
Figure 2 is a cross-sectional view showing the schematic structure of a gas turbine according to the first embodiment of the present invention.
Figure 3 is a cross-sectional view showing a holder and a sealing device installed therein according to the first embodiment of the present invention.
FIG. 4 is an enlarged view of area A1 in FIG. 3.
Figure 5 is a perspective view showing a sealing device according to a first embodiment of the present invention.
Figure 6 is a perspective view showing the engaging protrusion of the sealing device according to the first embodiment of the present invention.
Figure 7 is a perspective view showing a coupling groove of the sealing device according to the first embodiment of the present invention.
Figure 8 is a perspective view showing a coupling protrusion of a sealing device according to a second embodiment of the present invention.

Since the present invention can be modified in various ways and can have various embodiments, specific embodiments will be exemplified and explained in detail in the detailed description. However, this is not intended to limit the present invention to specific embodiments, and should be understood to include all transformations, equivalents, and substitutes included in the spirit and technical scope of the present invention.

The 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 the presence of features, numbers, steps, operations, components, parts, or combinations thereof described in the specification, but are not intended to indicate the presence of one or more other features. It should be understood that it does not exclude in advance the possibility of the existence or addition of elements, numbers, steps, operations, components, parts, or combinations thereof.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings. At this time, note that in the attached drawings, like components are indicated by the same symbols whenever possible. Additionally, detailed descriptions of well-known functions and configurations that may obscure the gist of the present invention will be omitted. For the same reason, some components are exaggerated, omitted, or schematically shown in the accompanying drawings.

Hereinafter, a gas turbine according to the first embodiment of the present invention will be described.

FIG. 1 is a partially cut-away perspective view of a gas turbine according to a first embodiment of the present invention, and FIG. 2 is a cross-sectional view showing a schematic structure of a gas turbine according to a first embodiment of the present invention.

1 and 2, a gas turbine 1000 according to an embodiment of the present invention includes a compressor 1100, a combustor 1200, and a turbine 1300. The compressor 1100 includes a plurality of blades 1110 installed radially.

In this embodiment, the gas turbine 1000 and the turbine 1300 are described as examples of rotating machines. However, the present invention is not limited thereto, and the present invention can be applied to various rotating machines.

The compressor 1100 rotates the blade 1110, and the air moves while being compressed by the rotation of the blade 1110. The size and installation angle of the blade 1110 may vary depending on the installation location. In one embodiment, the compressor 1100 is directly or indirectly connected to the turbine 1300 to receive a portion of the power generated by the turbine 1300 and use it to rotate the blades 1110.

Air compressed in the compressor 1100 moves to the combustor 1200. The combustor 1200 includes a plurality of combustion chambers 1210 and a fuel nozzle module 1220 arranged in an annular shape.

As shown in FIG. 2, the gas turbine 1000 according to an embodiment of the present invention is provided with a housing 1010, and a compressor section 1100 is located on the upstream side of the housing 1010, and a compressor section 1100 is located on the downstream side. Turbine section 1300 is disposed. Additionally, a torque tube unit 1500 is disposed between the compressor section 1100 and the turbine section 1300 as a torque transmission member that transmits the rotational torque generated by the turbine section 1300 to the compressor section 1100.

The compressor section 1100 is provided with a plurality of compressor rotor disks 1120 (for example, 14 pieces), and each compressor rotor disk 1120 is fastened by a tie rod 1600 so as not to be spaced apart in the axial direction. .

Specifically, each compressor rotor disk 1120 is aligned with each other along the axial direction with the tie rod 1600 constituting the rotation axis passing through approximately the center. Here, the opposing surfaces of each neighboring compressor rotor disk 1120 are compressed by the tie rod 1600, so that relative rotation is impossible.

A plurality of blades 1110 are radially coupled to the outer peripheral surface of the compressor rotor disk 1120. Each blade 1110 has a dovetail portion 1112 and is fastened to the compressor rotor disk 1120.

A vane (not shown) fixed to the housing is located between each rotor disk 1120. Unlike the rotor disk, the vanes are fixed so as not to rotate, and serve to align the flow of compressed air passing through the blades of the compressor rotor disk and guide the air to the blades of the rotor disk located downstream.

The combustor 1200 mixes and combusts the incoming compressed air with fuel to produce high-energy, high-temperature, high-pressure combustion gas. The isobaric combustion process increases the temperature of the combustion gas to the heat resistance limit that the combustor and turbine parts can withstand. .

Meanwhile, the high-temperature, high-pressure combustion gas from the combustor is supplied to the turbine 1300 described above. As the supplied high-temperature, high-pressure combustion gas expands, it collides with the rotor blades of the turbine, giving a recoil force, causing rotational torque. The rotational torque thus obtained is transmitted to the compressor through the torque tube described above, and exceeds the power required to drive the compressor. The power is used to drive generators, etc.

The turbine 1300 is basically similar to the structure of a compressor. That is, the turbine 1300 is also provided with a turbine rotor 1320 similar to the rotor of the compressor 1100. Accordingly, the turbine rotor 1320 includes a turbine rotor disk 1322 and a plurality of turbine blades 1324 disposed radially therefrom. The turbine blade 1324 may also be coupled to the turbine rotor disk 1322 in a dovetail or other manner.

In addition, a plurality of turbine vanes 1314 fixed to the housing 1010 are provided between the turbine blades 1324 of the turbine rotor disk 1322 to guide the flow direction of the combustion gas passing through the turbine blades 1324. I do it. At this time, the holder 1312 and the turbine vane 1314, which correspond to the fixed body, may also be defined by the comprehensive name turbine stator 1310 to distinguish them from the turbine rotor 120, which corresponds to the rotating body.

A ring segment is mounted at a position facing the outer end of the rotating turbine blade 1324 inside the housing to form a predetermined gap with the outer end of the turbine blade 1324. That is, the gap between the ring segment 1325 and the outer end of the turbine blade 1324 forms a tip clearance.

Turbine vanes 1314 and ring segments may be fixedly mounted within housing 1010 by means of holders 1312.

Figure 3 is a partial cross-sectional view showing the internal structure of a gas turbine according to the first embodiment of the present invention, Figure 4 is an enlarged view of area A1 in Figure 3, and Figure 5 is a diagram showing the internal structure of the gas turbine according to the first embodiment of the present invention. It is a perspective view showing the sealing device according to the first embodiment of the present invention, Figure 6 is a perspective view showing the coupling protrusion of the sealing device according to the first embodiment of the present invention, and Figure 7 is a coupling groove of the sealing device according to the first embodiment of the present invention. This is a perspective view.

3 to 7 , the holder 1312 is formed along the axial direction (y-axis direction) and may include a first part 1030 and a second part 1040. The holder 1312 may further include a plurality of parts in addition to the first part 1030 and the second part 1040. In FIG. 3, the x-axis represents the circumferential direction of the turbine 1300, the y-axis represents the axial direction of the turbine 1300, and the z-axis represents the radial direction of the turbine 100.

The first part 1030 and the second part 1040 are connected in the first direction (y-axis direction), and a mounting groove 1031 into which the sealing device 100 is inserted is formed in the first part 1030. Additionally, the first component 1030 may be formed with a support groove 1032 that is recessed outward in the radial direction (z-axis direction) from the mounting groove 1031.

The sealing device 100 is inserted into the mounting groove 1031 and protrudes from the mounting groove 1031 to seal the gap G1 formed between the first component 1030 and the second component 1040. The sealing device 100 is formed to extend in the radial direction, and a plurality of sealing devices 100 may be combined to form a ring shape.

The sealing device 100 includes a base portion 112 having a square cross-section, a support jaw 113 protruding outward from the base portion 112, and a support jaw 113 protruding from the base portion 112 toward the second component 1040 to form a gap. (G1) may include a blocking protrusion 114.

The base portion 112 has a long bar shape and may have an arc shape. The support jaw 113 may protrude outward from the base portion 112 in the radial direction (z-axis direction), and the blocking protrusion 114 may protrude from the base portion 112 in the axial direction (y-axis direction). Accordingly, the blocking protrusion () protrudes into the gap (G1), thereby stably sealing the gap (G1). Additionally, chamfer portions 151, 152, 53, 154, and 155 may be formed at edges extending in the longitudinal direction of the sealing device 100.

A coupling protrusion 130 is formed on one longitudinal end of the sealing device 100, and a coupling groove into which the coupling protrusion 130 of the neighboring sealing device 100 is inserted is formed on the other longitudinal end of the sealing device 100. 140) can be formed. The coupling protrusion 130 of the sealing device 100 is inserted into the coupling groove 140 of the neighboring sealing device 100 to prevent gas from leaking between the sealing devices 100.

The coupling protrusion 130 is formed to be connected to one edge of the sealing device 100, and the edge may be inserted into the gap G1 and located at a radial inner end. The coupling protrusion 130 extends from the area where the blocking protrusion 114 is located to the area where the base portion 112 is located to block gas leakage.

The coupling protrusion 130 protrudes from the side of the sealing device 100, but only from a portion of the side. The surface of the coupling protrusion 130 facing radially inward and the axial direction, but the surface facing the outside of the coupling groove 140, are connected to the surface of the sealing device 100, and the surface facing radially outward and the axial direction are connected to the surface of the sealing device 100. The surface facing the inside of the coupling groove is spaced apart from the surface of the sealing device 100.

An inclined surface 162 is formed between the coupling protrusion 130 and the side of the sealing device 100. The inclined surface 162 is a surface facing outward in the radial direction (z-axis direction) from the coupling protrusion 130 and a coupling protrusion ( At 130), it is connected to the surface facing the inside of the coupling groove 140. Meanwhile, a chamfer portion 161 may be formed at an edge of the coupling protrusion that comes into contact with the coupling groove.

The coupling groove 140 is formed on a side opposite to the side where the coupling protrusion 130 is formed, and may be formed at a position corresponding to the position on the side where the coupling protrusion 130 is formed. The coupling groove 140 is formed to be connected to one edge of the sealing device 100, and the edge may be located at a radially inner end.

An extension 172 is formed in the coupling groove 140 connected to the side surface in contact with the inclined surface 162 and supports the inclined surface 162. The expansion portion 172 may be formed to be inclined with respect to the side surface of the sealing device 100 and the inner surface of the coupling groove 140. Additionally, an inclined support surface 171 may be formed at a corner of the coupling groove 140 to come into contact with the chamfer portion 161 formed on the coupling protrusion.

In this way, according to this embodiment, the coupling protrusion 130 and the coupling groove 140 are formed in the sealing device 100, and the coupling protrusion 130 and the coupling groove 140 are fitted to form a space between the sealing device 100. Leakage can be reliably prevented.

Hereinafter, a sealing device according to a second embodiment of the present invention will be described.

Figure 8 is a perspective view showing a coupling protrusion of a sealing device according to a second embodiment of the present invention.

When described with reference to FIG. 8, the sealing device 200 according to the present embodiment has the same structure as the sealing device according to the first embodiment described above except for the coupling protrusion 230, so a duplicate description of the same configuration is provided. is omitted.

The sealing device 200 includes a base portion 212 having a square cross-section, a support jaw 213 protruding outward from the base portion 212, and a support protrusion 213 that protrudes from the base portion 212 toward the second part to fill the gap. It may include a blocking protrusion (214).

A coupling protrusion 230 is formed on one longitudinal end of the sealing device 200. The coupling protrusion 230 is inserted into a coupling groove of an adjacent sealing device to prevent gas from leaking.

The coupling protrusion 230 is formed to be connected to one edge of the sealing device 200, and the edge may be inserted into the gap and located at a radial inner end. The coupling protrusion 230 extends from the area where the blocking protrusion 214 is located to the area where the base portion 212 is located to block gas leakage.

The coupling protrusion 230 protrudes from the side of the sealing device 200, but only from a portion of the side. The surface of the coupling protrusion 230 faces radially inward and faces the axial direction, but the surface facing the outside of the coupling groove is connected to the peripheral surface of the sealing device 200, and the surface facing radially outward faces the axial direction. The inwardly facing surface of the engagement groove is spaced apart from the peripheral surface of the sealing device 200.

A first blocking rib 251 extending in the longitudinal direction of the sealing device 200 is formed on the surface facing radially outward from the coupling protrusion 230, and a sealing device ( A second blocking rib 252 extending in the longitudinal direction of 200 is formed.

When the first blocking rib 251 and the second blocking rib 252 are formed in this way, gas leakage between the coupling protrusion 230 and the coupling groove can be prevented.

In addition, on the side of the sealing device 200 on which the coupling protrusion 230 is formed, a first line 261 extending in the axial direction (y-axis direction) and a first line 261 extending in the radial direction (z-axis direction) from the first line 261 are formed. A third blocking rib 260 with two lines 262 is formed. Gas leaks radially outwardly and axially from the inner edge of the coupling protrusion 230. When the third blocking rib 260 is formed in this way, gas leakage to the side of the sealing device 200 can be blocked. .

Above, an embodiment of the present invention has been described, but those skilled in the art will be able to understand the addition, change, deletion or addition of components without departing from the spirit of the present invention as set forth in the claims. The present invention may be modified and changed in various ways, and this will also be included within the scope of the rights of the present invention.

1000: gas turbine
1100: Compressor
1010: housing
1030: first part
1031: Mounting groove
1032: Support groove
1040: second part
1120: Compressor rotor disk
1150: housing
1170: Torque tube
1200: Combustor
1210: combustion chamber
1220: Fuel nozzle module
1300: turbine
1310: Turbine stator
1312: Holder
1314: Turbine vane
1320: Turbine rotor
1322: Turbine rotor disk
1324: Turbine blade
1325: Ring segment
1500: Torque tube unit
100, 200: Sealing device
112, 212: base part
113, 213: Support jaw
114, 214: Blocking protrusion
130, 230: Combined protrusion
140: Coupling groove
151, 152, 53, 154, 155, 162: Chamfer section
162: slope
251: first blocking rib
252: second blocking rib
260: third blocking rib
261: first line
262: second line

Claims (20)

In a sealing device for sealing a gap between a first part and a second part in which a mounting groove is formed,
It includes a bar-shaped base portion connected in one direction, a support jaw protruding outward in a radial direction from the base portion, and a blocking protrusion protruding from the base portion to fill the gap,
A sealing device characterized in that a coupling protrusion is formed on one longitudinal end of the sealing device, and a coupling groove into which the coupling protrusion of an adjacent sealing device is inserted is formed on the other longitudinal end. According to paragraph 1,
The coupling protrusion is formed to be connected to one edge of the sealing device, and the edge is inserted into the gap and located at a radially inner end. According to paragraph 2,
The sealing device is characterized in that the engaging protrusion extends from the area where the blocking protrusion is formed to the area where the base portion is formed. According to paragraph 2,
The base portion is connected in an arc shape, and a plurality of sealing devices are combined to form a ring. According to paragraph 2,
A surface of the engaging protrusion facing radially inward and a surface facing axially but facing outward of the coupling groove are connected to the surface of the sealing device, and a surface facing radially outward and a surface facing axially towards the coupling groove are connected to the surface of the sealing device. A sealing device, characterized in that the inner surface of the sealing device is spaced apart from the surface of the sealing device. According to paragraph 1,
A sealing device, characterized in that the first part and the second part consist of a holder supporting the vane and ring segment of the turbine. According to paragraph 1,
An inclined surface is formed between the engaging protrusion and a side of the sealing device, and the inclined surface is connected to a surface of the engaging protrusion facing outward in the radial direction and a surface of the engaging protrusion facing inward of the engaging groove. According to paragraph 1,
A sealing device characterized in that an extension portion is formed in the coupling groove to contact the inclined surface and support the inclined surface. According to paragraph 1,
A first blocking rib extending in the longitudinal direction of the sealing device is formed on a surface facing radially outward from the engaging protrusion, and a second blocking rib extending in the longitudinal direction of the sealing device is formed on a surface facing in the axial direction but facing inside of the engaging groove. A sealing device characterized in that ribs are formed. According to clause 9,
On the side of the sealing device where the coupling protrusion is formed,
A sealing device, characterized in that a third blocking rib is formed having a first line running axially and a second line running radially from the first line. a plurality of rotating blades;
A plurality of vanes disposed between the blades spaced apart in the axial direction and guiding the flow;
a ring segment maintaining a gap against the outer ends of the blades;
a holder supporting the ring segment and the vane and including a first part and a second part connected axially; and
a plurality of sealing devices sealing between the first component and the second component;
Including,
A mounting groove is formed in the first part,
The sealing device includes a bar-shaped base portion connected in one direction, a support protrusion protruding outward in a radial direction from the base portion, and a blocking protrusion protruding from the base portion to fill the gap,
A rotating machine, characterized in that a coupling protrusion is formed on one longitudinal end of the sealing device, and a coupling groove into which the coupling protrusion of an adjacent sealing device is inserted is formed on the other longitudinal end. According to clause 11,
The engaging protrusion is formed to be connected to one edge of the sealing device, and the edge is inserted into the gap and located at a radially inner end. According to clause 12,
The rotating machine is characterized in that the engaging protrusion extends from the area where the blocking protrusion is formed to the area where the base portion is formed. According to clause 12,
The base portion is connected in an arc shape, and a plurality of sealing devices are combined to form a ring. According to clause 12,
A surface of the engaging protrusion facing radially inward and a surface facing axially but facing outward of the coupling groove are connected to the surface of the sealing device, and a surface facing radially outward and a surface facing axially towards the coupling groove are connected to the surface of the sealing device. The inner surface of the rotating machine is spaced apart from the surface of the sealing device. According to clause 11,
A rotating machine, characterized in that the first part and the second part consist of a holder supporting the vane and ring segments of the turbine. According to clause 11,
An inclined surface is formed between the engaging protrusion and a side of the sealing device, and the inclined surface is connected to a surface of the engaging protrusion facing outward in the radial direction and a surface of the engaging protrusion facing inward of the engaging groove. According to clause 11,
A rotating machine, characterized in that an extension part is formed in the coupling groove to contact the inclined surface and support the inclined surface. According to clause 11,
A first blocking rib extending in the longitudinal direction of the sealing device is formed on a surface facing radially outward from the coupling protrusion, and a second blocking rib extending in the longitudinal direction of the sealing device is formed on a surface facing in the axial direction but facing inside the coupling groove. A rotating machine characterized in that ribs are formed. According to clause 19,
On the side of the sealing device where the coupling protrusion is formed,
A rotating machine, characterized in that a third blocking rib is formed having a first line running axially and a second line running radially from the first line.

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