KR102291530B1 - Corss flame module, combustor, and gas turbine including the same - Google Patents

Abstract

According to one aspect of the present invention, a flame propagation module is installed in an inner liner forming a combustion chamber of a combustor of a gas turbine and an outer liner surrounding the inner liner to propagate a flame generated from the combustion chamber to the other adjacent combustion chamber. Moreover, the flame propagation module comprises: a transfer tube penetrating the outer liner to be connected to the inner liner; a support tube protruding from an outer circumferential surface of the outer liner to support the transfer tube; a cross-frame tube coupled to the transfer tube to transfer the flame; and a fixing member fixating the transfer tube, the support tube, and the cross-frame tube together.

Description

CORSS FLAME MODULE, COMBUSTOR, AND GAS TURBINE INCLUDING THE SAME

The present invention relates to a flame propagation module, a combustor, and a gas turbine comprising the same.

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

A gas turbine generally includes a compressor, a combustor and a turbine. The compressor sucks in the outside air, compresses it, and delivers it to the combustor. The compressed air in the compressor is in a state of high pressure and high temperature. The combustor mixes and combusts the compressed air and fuel introduced from the compressor. The combustion gases generated by the combustion are discharged to the turbine. The combustion gas causes the turbine blades inside the turbine to rotate, which in turn generates power. The generated power is used in various fields such as power generation and driving of mechanical devices.

On the other hand, between the combustor and the combustor, a flame propagation module for transferring the flame generated inside the combustor to another adjacent combustor is provided. Such a flame propagation module is installed in a liner of a combustor in which fuel is burned, and transfers a flame generated inside the liner to the inside of the liner of another combustor adjacent thereto.

The conventional flame propagation module is fixed to the liner between the outer liner and the inner liner. In this structure, not only is it difficult to install the flame propagation tube, but also the outer liner must be removed to repair the flame propagation module, so repair is difficult. have.

Based on the technical background as described above, the present invention provides a flame propagation module, a combustor, and a gas turbine that can be easily installed and repaired.

A flame propagation module according to an aspect of the present invention is installed on an inner liner forming a combustion chamber of a combustor of a gas turbine and an outer liner surrounding the inner liner to propagate the flame generated from the combustion chamber to another adjacent combustion chamber, a trans tube passing through the outer liner and connected to the inner liner; a support tube protruding from an outer circumferential surface of the outer liner to support the trans tube; a cross frame tube coupled to the trans tube to transmit a flame; and the trans tube; It may include a fixing member for fixing the support tube and the cross frame tube together.

The fixing member according to an aspect of the present invention may have a ring shape having elasticity, and may include an elastic ring surrounding the trans tube, the support tube, and the cross frame tube.

A first flange is formed on the support tube according to an aspect of the present invention, a second flange is formed on the trans tube, a third flange is formed on the cross frame tube, and the first flange is formed on the elastic ring; A coupling groove into which the second flange and the third flange are inserted may be formed.

The elastic ring according to an aspect of the present invention may be formed with a plurality of pressure plates bent at the outer end of the coupling groove and extended outwardly.

The elastic ring according to an aspect of the present invention includes two pressure plates respectively connected to both ends in the width direction of the coupling groove, and one pressure plate may be disposed farther from the central axis passing through the center of the cross frame tube than the other pressure plate. .

A vibration absorbing part may be connected to the pressing plate according to an aspect of the present invention, and the vibration absorbing part may include a bent part bent in the pressing plate and a support part connected to the bending part and facing the pressing plate.

A protective rib protruding from the outer end of the first flange and surrounding the outer circumferential surface of the second flange may be formed on the first flange according to an aspect of the present invention.

The protective rib according to an aspect of the present invention may be formed to surround the outer peripheral surface of the second flange and the outer peripheral surface of the third flange together.

The elastic ring according to an aspect of the present invention is formed with a discontinuous end spaced apart with an opening therebetween, and the fixing member is installed on the fixing protrusions and the fixing protrusions protruding outward from the discontinuous end to the elastic ring It may further include a fastener for tightening the.

The fastener according to an aspect of the present invention may include a tension rod and a pressure supporter coupled to the tension rod.

The tightening rod according to an aspect of the present invention may be rotatably installed on the fixing protrusion.

The fixing protrusion according to one aspect of the present invention has an anti-loosening portion having a pressure curved plate that protrudes outwardly, is curved and is elastically deformed, and a pressure support plate that connects from the pressure curved plate and comes into contact with the pressure supporter.

A flame propagation module according to another aspect of the present invention is installed in an inner liner forming a combustion chamber of a combustor of a gas turbine and an outer liner surrounding the inner liner, and propagating the flame generated from the combustion chamber to another adjacent combustion chamber. a trans tube passing through the outer liner and connected to the inner liner; a cross frame tube coupled to the trans tube to transmit a flame; and a fixing member for fixing the trans tube and the cross frame tube together; The member has a ring shape having elasticity, and includes an elastic ring surrounding the trans tube and the cross frame tube, the trans tube and the cross frame tube each having a flange, and the flanges are inserted into the elastic ring A plurality of pressure plates may be formed by being bent at the coupling groove and the outer end of the coupling groove and extending outwardly.

The elastic ring according to another aspect of the present invention includes two pressure plates respectively connected to both ends in the width direction of the coupling groove, and one pressure plate may be disposed farther from the central axis passing through the center of the cross frame tube than the other pressure plate. .

A vibration absorbing part may be connected to the pressing plate according to another aspect of the present invention, and the vibration absorbing part may include a bent part bent by the pressing plate and a support part connected to the bending part and facing the pressing plate.

A protective rib that protrudes from the outer end of the flange formed on the trans tube according to another aspect of the present invention and surrounds the outer circumferential surface of the flange formed on the cross frame tube may be formed.

A combustor according to another aspect of the present invention mixes compressed air supplied from a compressor of a gas turbine and fuel supplied from the outside and combusts them, and a nozzle for injecting fuel and a combustion chamber in which the fuel injected from the nozzle is ignited are formed therein. A liner comprising an inner liner and an outer liner installed to surround the inner liner, a transition piece connected to the liner, and a transition piece connected to the liner, the flame generated from the combustion chamber is propagated to the combustion chamber of another adjacent combustor a flame propagation module, wherein the flame propagation module includes a trans tube connected to the inner liner through the outer liner, a support tube protruding from an outer circumferential surface of the outer liner to support the trans tube, and coupled to the trans tube It may include a cross frame tube for transmitting the flame, and a fixing member for fixing the trans tube, the support tube, and the cross frame tube together.

The fixing member according to another aspect of the present invention may have a ring shape having elasticity, and may include an elastic ring surrounding the trans tube, the support tube, and the cross frame tube.

According to another aspect of the present invention, a first flange is formed on the support tube, a second flange is formed on the trans tube, a third flange is formed on the cross frame tube, and the first flange is formed on the elastic ring; A coupling groove into which the second flange and the third flange are inserted may be formed.

A protective rib protruding from the outer end of the first flange and surrounding the outer circumferential surface of the second flange may be formed on the first flange according to another aspect of the present invention.

A gas turbine according to another aspect of the present invention includes a compressor for compressing air introduced from the outside, a combustor that mixes fuel with compressed air compressed in the compressor, and a plurality of rotating by the combustion gas burned in the combustor. A liner including a turbine blade, wherein the combustor includes a plurality of nozzles for injecting fuel, an inner liner having a combustion chamber ignited by the fuel injected from the nozzles formed therein, and an outer liner installed to surround the inner liner , a transition piece connected to the liner, and a flame propagation module installed on the liner and propagating the flame generated from the combustion chamber to a combustion chamber of another adjacent combustor, wherein the flame propagation module penetrates the outer liner a trans tube connected to the inner liner, a support tube protruding from an outer circumferential surface of the outer liner to support the trans tube, a cross frame tube coupled to the trans tube to transmit a flame, and the trans tube, the support tube, and It may include a fixing member for fixing the cross frame tube together.

The fixing member according to another aspect of the present invention may have a ring shape having elasticity, and may include an elastic ring surrounding the trans tube, the support tube, and the cross frame tube.

According to another aspect of the present invention, a first flange is formed on the support tube, a second flange is formed on the trans tube, a third flange is formed on the cross frame tube, and the first flange is formed on the elastic ring. , a coupling groove into which the second flange and the third flange are inserted may be formed.

A protective rib protruding from the outer end of the first flange and surrounding the outer circumferential surface of the second flange may be formed on the first flange according to another aspect of the present invention.

As described above, according to the flame propagation module, the combustor, and the gas turbine according to an aspect of the present invention, it is possible to more easily install the flame propagation module between the combustors.

1 is a view showing the inside of a gas turbine according to a first embodiment of the present invention.
FIG. 2 is a view showing the combustor of FIG. 1 .
3 is a cross-sectional view illustrating a flame propagation module according to a first embodiment of the present invention.
4 is a perspective view illustrating a fixing member according to a first embodiment of the present invention.
5 is a cross-sectional view illustrating a flame propagation module according to a second embodiment of the present invention.
6 is a perspective view illustrating a fixing member according to a third embodiment of the present invention.
7 is a cross-sectional view showing a state in which the fixing member according to the fourth embodiment of the present invention is installed.
8 is a cross-sectional view illustrating a flame propagation module according to a fifth embodiment of the present invention.

Since the present invention can apply various transformations and can have various embodiments, specific embodiments are illustrated and described in detail in the detailed description. However, this is not intended to limit the present invention to specific embodiments, and it should be understood to include all modifications, equivalents and substitutes included in the spirit and 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. The singular expression includes the plural expression unless the context clearly dictates otherwise. In the present invention, terms such as 'comprising' or 'having' are intended to designate that the features, numbers, steps, operations, components, parts, or combinations thereof described in the specification exist, but one or more other features It should be understood that this does not preclude the existence or addition of numbers, steps, operations, components, parts, or combinations thereof.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In this case, it should be noted that in the accompanying drawings, the same components are denoted 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, some components are exaggerated, omitted, or schematically illustrated in the accompanying drawings.

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

FIG. 1 is a view showing the inside of a gas turbine according to an embodiment of the present invention, and FIG. 2 is a view showing the combustor of FIG. 1 .

The thermodynamic cycle of the gas turbine 1000 according to the present embodiment may ideally follow the Brayton cycle. The Brayton cycle can be composed of four processes leading to isentropic compression (adiabatic compression), static pressure rapid heat, isentropic expansion (adiabatic expansion), and static pressure dissipation. That is, after sucking in air from the atmosphere, compressing it to a high pressure, burning fuel in a static pressure environment to release heat energy, expanding this high-temperature combustion gas to convert it into kinetic energy, and then releasing the exhaust gas containing the residual energy into the atmosphere. can That is, the cycle can be made in four processes of compression, heating, expansion, and heat dissipation.

As shown in FIG. 1 , the gas turbine 1000 realizing the above Brayton cycle may include a compressor 1100 , a combustor 1200 , and a turbine 1300 . The following description will refer to FIG. 1 , but the description of the present invention may be broadly applied to a turbine engine having a configuration equivalent to that of the gas turbine 1000 exemplarily illustrated in FIG. 1 .

Referring to FIG. 1 , the compressor 1100 of the gas turbine 1000 may suck air from the outside and compress it. The compressor 1100 may supply compressed air compressed by the compressor blade 1130 to the combustor 1200 , and may also supply cooling air to a high temperature region requiring cooling in the gas turbine 1000 . 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 are increased.

The compressor 1100 is designed as centrifugal compressors or axial compressors. In a small gas turbine, a centrifugal compressor is applied, whereas a large gas turbine 1000 as shown in FIG. 1 has a large amount of air. Since it is necessary to compress the multi-stage axial flow compressor 1100 is generally applied. At this time, in the multi-stage axial flow compressor 1100, the blade 1130 of the compressor 1100 rotates according to the rotation of the rotor disk and moves the compressed air to the compressor vane 1140 of the rear stage while compressing the introduced air. As the air passes through the blades 1130 formed in multiple stages, the air is compressed at a higher pressure.

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 compressor blade 1130 of the front end toward the blade 1130 of the rear end. 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 amount of air inflow.

The compressor 1100 may be driven using a portion of power output from the turbine 1300 . To this end, as shown in FIG. 1 , the rotation shaft of the compressor 1100 and the rotation shaft of the turbine 1300 may be directly connected. In the case of the large gas turbine 1000 , approximately half of the output produced by the turbine 1300 may be consumed to drive the compressor 1100 . Accordingly, improving the efficiency of the compressor 1100 has a direct effect on improving the overall efficiency of the gas turbine 1000 .

On the other hand, the combustor 1200 may mix compressed air supplied from the outlet of the compressor 1100 with the fuel and perform isostatic combustion to produce combustion gas of high energy. 2 shows an example of a combustor 1200 applied to the gas turbine 1000 . The combustor 1200 may include a combustor casing 1210 , a burner 1220 , and a duct assembly 1250 . The combustor 1200 may include a plurality of burners 1220 and a duct assembly 1250 arranged in a circumferential direction of the gas turbine 1000 . In addition, the burner 1220 may include a plurality of nozzles 1230 , a head end plate 1270 , and a nozzle casing 1260 .

The gas turbine 1000 may use a gas fuel, a liquid fuel, or a combination fuel of a combination thereof. It is important to create a combustion environment to reduce the amount of exhaust gases such as carbon monoxide and nitrogen oxides, which are subject to legal regulations. Although combustion control is relatively difficult, it has the advantage of reducing exhaust gases by lowering the combustion temperature and creating uniform combustion. In recent years, premixed combustion is widely applied.

In the case of premixed combustion, compressed air is mixed with the fuel pre-injected from the nozzle 1230 and then enters the combustion chamber 1240 . The initial ignition of the premixed gas is made using an igniter, and then, when the combustion is stabilized, the combustion is maintained by supplying fuel and air.

Referring to FIG. 2 , compressed air flows along the outer surface of the duct assembly 1250 through which high-temperature combustion gas flows by connecting between the burner 1220 and the turbine 1300 and is supplied to the nozzle 1230, in this process. The duct assembly 1250 heated by the hot combustion gas is properly cooled.

The duct assembly 1250 may include a liner 1251 and a transition piece 1252 . The liner 1251 may include an inner liner 1253 that forms the combustion chamber 1240 and an outer liner 1254 that surrounds the inner liner 1253 . The compressed air may cool the transition piece 1252 and the liner 1251 while moving inside the transition piece 1252 and between the inner liner 1253 and the outer liner 1254 .

The liner 1251 is a tube member connected to the burner 1220 of the combustor 1200 , and the space inside the liner 1251 forms the combustion chamber 1240 . One longitudinal end of the liner 1251 is coupled to the burner 1220 , and the other longitudinal end of the liner 1251 is coupled to the transition piece 1252 .

And, the transition piece 1252 is connected to the inlet of the turbine 1300 serves to guide the combustion gas of high temperature to the turbine (1300). One longitudinal end of the transition piece 1252 is coupled to the liner 1251 , and the other longitudinal end of the transition piece 1252 is coupled to the turbine 1300 . Like the liner 1251 , the transition piece 1252 may include an inner transition piece enclosing the inner space of the transition piece 1252 and an outer transition piece enclosing the inner transition piece.

A nozzle casing 1260 is coupled to an end of the duct assembly 1250 , and a head end plate 1270 supporting the nozzles 1230 is coupled to the nozzle casing 1260 .

The combustor casing 1210 surrounds the plurality of burners 1220 and may have a substantially cylindrical shape. The burner 1220 is disposed downstream of the compressor 1100 , and may be disposed along the combustor casing 1210 forming an annular shape. Each burner 1220 is provided with several nozzles 1230, and fuel injected from the nozzles 1230 is mixed with air in an appropriate ratio to achieve a state suitable for combustion.

Figure 3 is a cross-sectional view showing a flame propagation module according to a first embodiment of the present invention, Figure 4 is a perspective view showing a fixing member according to the first embodiment of the present invention.

3 and 4, the combustion chambers 1240 may be connected to each other through the flame propagation module 1201, and the flame propagation module 1201 transmits the flame generated in one combustion chamber 1240 to the other combustion chamber 1240. ) to pass

The flame propagation module 1201 may include a support tube 1256 , a trans tube 1400 , a cross frame tube 1500 , and a fixing member 1700 . The support tube 1256 may be formed of a tube protruding from the outer circumferential surface of the outer liner 1254 to support the trans tube 1400 . The support tube 1256 protrudes from the outer liner 1254 toward the neighboring outer liner 1254 and may be formed of a circular or elliptical tube having a space therein. An outwardly extending first flange 1257 may be formed at the longitudinal end of the support tube 1256 . The first flange 1257 has a larger outer diameter than the support tube 1256 .

The trans tube 1400 passes through the outer liner 1254 and is connected to the inner liner 1253 , and may have a structure protruding to the outside of the outer liner 1254 . The trans tube 1400 may be formed of a circular or elliptical tube, and one end of the trans tube 1400 in the longitudinal direction may be connected to the inner liner 1253 , and the other end may be connected to the cross frame tube 1500 .

An outwardly protruding portion of the outer liner 1254 of the trans tube 1400 may be inserted into the support tube 1256 . A positioning protrusion 1253a for supporting the trans tube 1400 is formed in the inner liner 1253 , and a positioning groove 1420 into which the positioning protrusion 1253a is inserted may be formed in the trans tube 1400 . have.

When the positioning protrusion 1253a and the positioning groove 1420 are formed, the trans tube 1400 is stably coupled to the inner liner 1253, and the trans tube 1400 is excessively inserted into the inner liner 1253. it can be prevented In addition, a second flange 1410 extending outwardly may be formed at a portion of the trans tube 1400 in contact with the cross frame tube 1500 .

The cross frame tube 1500 is coupled to the trans tubes 1400 to connect the trans tubes 1400 to transmit the flame. The cross frame tube 1500 may be formed of a circular or elliptical tube, and may be connected to adjacent trans tubes 1400 . The cross frame tube 1500 may include a first propagation tube 1510 and a second propagation tube 1520 inserted into the first propagation tube 1510 to be slidably installed with respect to the first propagation tube 1510 . .

The first propagation tube 1510 may be connected to one trans tube 1400 , and the second propagation tube 1520 may be connected to the other trans tube 1400 connected to an adjacent combustion chamber. Pressure control holes 1511 and 1521 may be formed in the first propagation tube 1510 and the second propagation tube 1520 , respectively.

A third flange 1530 extending outwardly is formed at both ends of the cross frame tube 1500 in the longitudinal direction, and the third flange 1530 is connected to the first propagation tube 1510 and the second propagation tube 1520, respectively. can be formed. The third flange 1530 may be formed to contact the second flange 1410 . The first flange 1257 , the second flange 1410 , and the third flange 1530 are stacked and the second flange 1410 is positioned between the first flange 1257 and the third flange 1530 .

The fixing member 1700 may fix the trans tube 1400 , the support tube 1256 , and the cross frame tube 1500 together. The fixing member 1700 may have a ring shape having elasticity surrounding the first flange 1257 , the second flange 1410 , and the third flange 1530 .

The fixing member 1700 may include an elastic ring 1710 having a ring shape having elasticity, a fixing protrusion 1760 protruding from the elastic ring 1710 , and a fastener 1720 for tightening the elastic ring 1710 . The elastic ring 1710 has a ring shape having a discontinuous end 1715 formed on one side, and the discontinuous end 1715 may be spaced apart from each other with the opening 1750 interposed therebetween. In addition, a connecting pin 1730 is installed in the elastic ring 1710 , and arc-shaped curved rods may be rotatably coupled to each other through the connecting pin 1730 . Although the present embodiment discloses a configuration in which one connecting pin 1730 is installed in the elastic ring 1710, the present invention is not limited thereto, and a plurality of connecting pins are installed in the elastic ring to have a multi-joint structure. .

In the elastic ring 1710, the first flange 1257, the second flange 1410 and the third flange 1530 are inserted into the coupling groove 1712 and the coupling groove 1712 are bent at both side ends in the width direction to the outside. Two expanded pressure plates 1713 may be formed. The coupling groove 1712 is fixed by inserting flanges formed extending in the longitudinal direction of the elastic ring 1710 . Accordingly, the elastic ring 1710 may partially surround the trans tube 1400 , the support tube 1256 , and the cross frame tube 1500 .

The pressing plate 1713 is formed extending in the circumferential direction of the fixing member 1700 and may be in contact with the outer circumferential surface of the support tube 1256 or the cross frame tube 1500 to support them. One side pressure plate 1713 may be disposed farther from the central axis X1 passing through the center of the cross frame tube 1500 than the other side pressure plate 1713 . The outer diameters of the support tube 1256 and the cross frame tube 1500 may be formed in different sizes. ) and the cross frame tube 1500 can be stably supported so as not to swing in the radial direction.

A fixing protrusion 1760 is formed in the elastic ring 1710 , and the fixing protrusion 1760 protrudes from a discontinuous end 1715 and may be installed to face each other while being spaced apart with an opening 1750 interposed therebetween. The fastener 1720 is coupled to the fixing protrusion 1760 , and a hole 1761 into which the fastener 1720 is inserted may be formed in the fixing protrusion 1760 .

The fastener 1720 may include a tightening rod 1721 and a pressure support member 1723 coupled to the tightening rod 1721 , and the tightening rod 1721 may be installed to pass through the fixing protrusion 1760 . In addition, the pressure support 1723 is screwed to one end of the lengthwise direction of the tightening rod 1721 , and may be pressed in contact with the fixing protrusion 1760 to reduce the gap between the fixing protrusions 1760 . Here, the tightening rod 1721 may be formed of a bolt, and the pressure support unit 1723 may be formed of a nut, but the present invention is not limited thereto.

As described above, according to the first embodiment, the fixing member 1700 is installed to fix the trans tube 1400, the support tube 1256, and the cross frame tube 1500 together, and the fixing member 1700 is the outer Since it is installed to surround the tubes from the outside of the liner 1254, the flame propagation module 1201 can be easily installed and easily repaired.

Hereinafter, a flame propagation module according to a second embodiment of the present invention will be described. 5 is a cross-sectional view illustrating a flame propagation module according to a second embodiment of the present invention.

5, since the flame propagation module 1202 according to the second embodiment has the same structure as the flame propagation module according to the first embodiment, except for the structure of the support tube 1281, A duplicate description of the same configuration will be omitted.

The support tube 1281 may be formed of a tube protruding from the outer circumferential surface of the outer liner 1254 to support the trans tube 1400 . The support tube 1281 protrudes from the outer liner 1254 toward the neighboring outer liner 1254 and may be formed of a circular or elliptical tube having a space therein. An outwardly extending first flange 1282 may be formed at the longitudinal end of the support tube 1281 .

The support tube 1281 may further include a protection rib 1283 protruding from the outer end of the first flange 1282 and surrounding the outer circumferential surface of the second flange 1410 . The protection rib 1283 may be formed to protrude in the direction of the central axis X1 of the cross frame tube 1500 to surround the outer peripheral surfaces of the second flange 1410 and the third flange 1530 together. The protection rib 1283 may be inserted into the coupling groove 1712 of the fixing member 1700 .

When the protective rib 1283 is formed as in the second embodiment, it is possible to reliably prevent the trans tube 1400 and the cross frame tube 1500 from swinging in the radial direction, as well as the trans tube 1400 and the cross frame tube. (1500) can be fixed more stably.

Hereinafter, a flame propagation module according to a third embodiment of the present invention will be described. 6 is a perspective view illustrating a fixing member according to a third embodiment of the present invention.

Referring to FIG. 6 , the flame propagation module according to the third embodiment has the same structure as the flame propagation module according to the first embodiment, except for the fixing member 2700 , and thus overlaps with the same configuration. A description is omitted.

The fixing member 2700 may include an elastic ring 2710 having a ring shape having elasticity and a fastener 2720 for tightening the elastic ring 2710 . The elastic ring 2710 may have a ring shape having a discontinuous end 2715 formed on one side, and the discontinuous end 2715 may be spaced apart from each other with an opening 2750 therebetween.

The elastic ring 2710 may be formed with a coupling groove 2712 and two pressure plates 2713 bent at the outer end of the coupling groove 2712 and extended outwardly. The coupling groove 2712 is formed extending in the longitudinal direction of the elastic ring 2710 to insert and fix the flanges. The pressure plate 2713 extends outwardly from the width direction end of the coupling groove 2712 , and the elastic ring 2710 may include two pressure plates 2713 .

A fixing protrusion 2760 is formed in the elastic ring 2710 , and the fixing protrusion 2760 protrudes from the discontinuous end 2715 and may be installed to face each other while being spaced apart with an opening 2750 interposed therebetween. The fastener is coupled to the fixing protrusion 2760 , and a hole into which the fastener 2720 is inserted may be formed in the fixing protrusion 2760 .

Fastener 2720 may include a tension rod 2721 and a pressure support 2723 coupled to the tension rod 2721 . A rotation support rod 2725 rotatably coupled to the fixing projection 2760 may be installed on one fixing protrusion 2760 , and a tightening rod 2721 may be fixed to the rotation support rod 2725 . Accordingly, the tightening rod 2721 may be rotatably installed with respect to the fixing protrusion 2760 .

The tightening rod 2721 is installed to pass through the other fixing protrusion 2760 , and the pressure support member 2723 may be screwed to the tightening rod 2721 . On the other hand, the other fixing protrusion 2760 may be provided with an anti-loosening portion 2730 for pressing the pressure support member 2723 .

The anti-loosening part 2730 extends from the fixing protrusion 2760 to the outside and extends from the elastically deformed pressing curved plate 2731 and the pressing curved plate 2731 to the pressing support plate 2723 and in contact with the pressing support plate 2732 ). may include. The pressing curved plate 2731 may be curved so as to be curved in an outward direction from the fixing protrusion 2760 so that the lower end thereof faces the elastic ring 2710 . The pressure support plate 2732 may be formed of a flat plate extending from the pressure curved plate 2731 toward the elastic ring 2710 and may be spaced apart from the fixing protrusion 2760 to face the fixing protrusion 2760 . The pressure support plate 2732 may come into contact with the pressure support member 2723 to press the pressure support member 2723 to the outside.

When the tightening rod 2721 is rotatably installed with respect to the fixing protrusion 2760 as in the present embodiment, the fixing member 2700 can be more easily installed in the tubes. In addition, when the release preventing unit 2730 is installed to press the pressure support member 2723, it is possible to prevent the pressure support member 2723 from being released due to vibration.

Hereinafter, a flame propagation module according to a fourth embodiment of the present invention will be described. 7 is a cross-sectional view showing a state in which the fixing member according to the fourth embodiment of the present invention is installed.

Referring to FIG. 7 , the flame propagation module according to the fourth embodiment has the same structure as the flame propagation module according to the first embodiment except for the fixing member 3700, and thus overlaps with the same configuration. A description is omitted.

The fixing member may include an elastic ring 3710 having a ring shape having elasticity and a fastener for tightening the elastic ring 3710 . The elastic ring 3710 may be cut to one side to have a discontinuous ring shape.

The elastic ring 3710 may be formed with a coupling groove 3712 and two pressing plates 3713 that are bent at an outer end of the coupling groove 3712 and extend outwardly. The coupling groove 3712 is formed extending in the longitudinal direction of the elastic ring 3710 to insert and fix the flanges. The pressure plate 3713 extends outward from the width direction end of the coupling groove 3712 , and the elastic ring 3710 may include two pressure plates 3713 .

A vibration absorbing part 3730 for absorbing vibration transmitted from the tubes may be formed on the pressure plate 3713 . The vibration absorbing unit 3730 may include a bent portion 3731 bent by the pressure plate 3713 and a support portion 3732 connected to the bent portion 3731 and facing the pressure plate 3713 . The bent portion 3731 is formed to be elastically deformable and may have a structure curved in an arc shape toward the center of the fixing member 3700 . The support part 3732 is connected to the end of the bent part 3731 and faces the pressure plate 3713 but is in contact with the support tube 1256 or the cross frame tube 1500 .

When the vibration absorbing part 3730 is formed as in the fourth embodiment, it is possible to stably support the support tube 1256 and the cross frame tube 1500 as well as to prevent the fixing member 3700 from loosening due to vibration. can do.

Hereinafter, a flame propagation module according to a fifth embodiment of the present invention will be described. 8 is a cross-sectional view illustrating a flame propagation module according to a fifth embodiment of the present invention.

8, since the flame propagation module 1205 according to the fifth embodiment has the same structure as the flame propagation module according to the first embodiment except for the structure of the trans tube 1400, A duplicate description of the same configuration will be omitted.

The trans tube 1400 passes through the outer liner 1254 and is connected to the inner liner 1253 , and may have a structure protruding to the outside of the outer liner 1254 . The trans tube 1400 may be formed of a circular or oval tube, and one end of the trans tube 1400 in the longitudinal direction may be connected to the inner liner 1253 , and the other end may be connected to the cross frame tube 1500 .

A positioning protrusion 1253a for supporting the trans tube 1400 is formed in the inner liner 1253 , and a positioning groove 1420 into which the positioning protrusion 1253a is inserted may be formed in the trans tube 1400 . have. A stopping protrusion 1450 may be formed on the trans tube 1400 to prevent the trans tube from being separated from the outer liner. The locking protrusion 1450 has an inclined surface inclined with respect to the outer surface of the trans tube 1400 and a vertical surface formed perpendicular to the outer surface of the trans tube 1400, and the vertical surface may be formed to contact the inner surface of the outer liner 1254. have. The upper end of the inclined surface may be connected to the upper end of the vertical surface. The locking protrusions 1450 may be formed continuously along the outer surface of the trans tube 1400 , and a plurality of locking protrusions 1450 may be spaced apart from each other in the circumferential direction of the trans tube 1400 .

A second flange 1530 protruding outward is formed in the trans tube 1400 , and a third flange 1530 extending outwardly is formed at both ends in the longitudinal direction of the cross frame tube 1500 .

The trans tube 1400 may further include a protection rib 1430 protruding from the outer end of the second flange 1530 to surround the outer circumferential surface of the third flange 1530 . The protection rib 1430 may be formed to protrude in the direction of the central axis X1 of the cross frame tube 1500 to surround the outer circumferential surface of the third flange 1530 together. The protective rib 1430 may be inserted into the coupling groove 1712 of the fixing member 1700 .

When the protective rib 1430 is formed as in the fifth embodiment, it is possible to reliably prevent the trans tube 1400 and the cross frame tube 1500 from swinging in the radial direction, as well as the trans tube 1400 and the cross frame tube. (1500) can be fixed more stably.

In the above, although an embodiment of the present invention has been described, those of ordinary skill in the art can add, change, delete or add components within the scope that does not depart from the spirit of the present invention described in the claims. The present invention may be variously modified and changed by, etc., and this will also be included within the scope of the present invention.

1000: gas turbine 1100: compressor
1130: compressor blade 1140: vane
1150: housing 1200: combustor
1201, 1202: flame propagation module 1210: combustor casing
1220: burner 1230: nozzle
1240: combustion chamber 1250: duct assembly
1251: liner 1252: transition piece
1253: inner liner 1253a: positioning projection
1254: outer liner 1260: nozzle casing
1270: head end plate 1256, 1281: support tube
1257, 1282: first flange 1283: protective rib
1400: trans tube 1410: second flange
1420: positioning groove 1500: cross frame tube
1510: first propagation tube 1520: second propagation tube
1530: third flange 1700, 2700, 3700: fixing member
1710, 2710, 3710: elastic ring 1712, 2712, 3712: mating groove
1713, 2713, 3713: platen 1720, 2730: fasteners
1721, 2721: tension bar 1723, 2723: pressure support
1730: connecting pin 1760: fixing protrusion
2725: rotation support bar 2730: loosening prevention part
2731: pressure curved plate 2732: pressure support plate
3730: vibration absorbing part 3731: bending part
3732: support

Claims (24)

A flame propagation module installed in an inner liner forming a combustion chamber of a combustor of a gas turbine and an outer liner surrounding the inner liner to propagate a flame generated from the combustion chamber to another adjacent combustion chamber, the flame propagation module comprising:
a trans tube passing through the outer liner and connected to the inner liner;
a support tube protruding from an outer circumferential surface of the outer liner to support the transformer tube;
a cross frame tube coupled to the trans tube to transmit a flame; and
a fixing member for fixing the trans tube, the support tube, and the cross frame tube together;
Flame propagation module comprising a. The method of claim 1,
The fixing member is formed in a ring shape having elasticity, and the flame propagation module comprises an elastic ring surrounding the trans tube, the support tube, and the cross frame tube. 3. The method of claim 2,
A first flange is formed on the support tube, a second flange is formed on the trans tube, a third flange is formed on the cross frame tube, and the first flange, the second flange and the second flange are formed on the elastic ring. 3 Flame propagation module, characterized in that the coupling groove is inserted into the flange is formed. 4. The method of claim 3,
Flame propagation module, characterized in that the elastic ring is formed with a plurality of pressure plates bent at the outer end of the coupling groove and extended outward. 5. The method of claim 4,
The elastic ring includes two pressure plates respectively connected to both ends in the width direction of the coupling groove, and one pressure plate is disposed farther from the central axis passing through the center of the cross frame tube than the other pressure plate. 5. The method of claim 4,
A vibration absorbing part is connected to the pressing plate, and the vibration absorbing part comprises a bent part bent by the pressing plate and a support part connected to the bent part and facing the pressing plate. 4. The method of claim 3,
Flame propagation module, characterized in that the first flange is formed with a protective rib protruding from the outer end of the first flange surrounding the outer peripheral surface of the second flange. 8. The method of claim 7,
The protective rib is flame propagation module, characterized in that formed so as to surround the outer peripheral surface of the second flange and the outer peripheral surface of the third flange together. 3. The method of claim 2,
The elastic ring has discontinuous ends spaced apart from each other with an opening therebetween, and the fixing member further includes fixing protrusions protruding outward from the discontinuous ends and fasteners installed on the fixing protrusions to tighten the elastic ring. Flame propagation module, characterized in that. 10. The method of claim 9,
wherein the fastener includes a tension rod and a pressure support coupled to the tension rod. 11. The method of claim 10,
The tightening rod is a flame propagation module, characterized in that it is rotatably installed on the fixing protrusion. 11. The method of claim 10,
Flame propagation module, characterized in that the fixing protrusion is formed with an anti-loosening portion having a pressure curved plate that protrudes outwardly, is curved and is elastically deformed, and a pressure support plate that connects from the pressure curved plate and comes into contact with the pressure support. A flame propagation module installed in an inner liner forming a combustion chamber of a combustor of a gas turbine and an outer liner surrounding the inner liner to propagate a flame generated from the combustion chamber to another adjacent combustion chamber, the flame propagation module comprising:
a trans tube passing through the outer liner and connected to the inner liner;
a cross frame tube coupled to the trans tube to transmit a flame; and
a fixing member for fixing the trans tube and the cross frame tube together; including,
The fixing member has a ring shape having elasticity, and includes an elastic ring surrounding the trans tube and the cross frame tube,
The trans tube and the cross frame tube each have flanges formed, and the elastic ring has a coupling groove into which the flanges are inserted, and a plurality of pressure plates bent at the outer end of the coupling groove and extended outwardly. radio module. 14. The method of claim 13,
The elastic ring includes two pressure plates respectively connected to both ends in the width direction of the coupling groove, and one pressure plate is disposed farther from the central axis passing through the center of the cross frame tube than the other pressure plate. 14. The method of claim 13,
A vibration absorbing part is connected to the pressing plate, and the vibration absorbing part comprises a bent part bent by the pressing plate and a support part connected to the bent part and facing the pressing plate. 14. The method of claim 13,
A flame propagation module, characterized in that a protective rib protruding from the outer end of the flange formed on the trans tube and surrounding the outer circumferential surface of the flange formed on the cross frame tube is formed. In the combustor for mixing compressed air supplied from the compressor of a gas turbine and fuel supplied from the outside, the combustor comprising:
nozzle for injecting fuel;
a liner including an inner liner in which a combustion chamber in which the fuel injected from the nozzle is ignited is formed, and an outer liner installed to surround the inner liner;
a transition piece connected to the liner; and
A flame propagation module installed on the liner and propagating the flame generated from the combustion chamber to the combustion chamber of another adjacent combustor; includes;
The flame propagation module includes a trans tube connected to the inner liner through the outer liner, a support tube protruding from an outer circumferential surface of the outer liner to support the trans tube, and a cross frame tube coupled to the trans tube to transmit flame and a fixing member for fixing the trans tube, the support tube, and the cross frame tube together. 18. The method of claim 17,
The fixing member is formed in a ring shape having elasticity, and the combustor comprises an elastic ring surrounding the trans tube, the support tube, and the cross frame tube. 19. The method of claim 18,
A first flange is formed on the support tube, a second flange is formed on the trans tube, a third flange is formed on the cross frame tube, and the first flange, the second flange and the second flange are formed on the elastic ring. 3 Combustor, characterized in that the coupling groove into which the flange is inserted. 20. The method of claim 19,
The first flange has a combustor, characterized in that the protective rib is formed protruding from the outer end of the first flange surrounding the outer peripheral surface of the second flange. A gas turbine comprising a compressor for compressing air introduced from the outside, a combustor for mixing and burning compressed air and fuel compressed in the compressor, and a turbine including a plurality of turbine blades rotated by the combustion gas burned in the combustor As,
the combustor,
a plurality of nozzles for injecting fuel;
A liner comprising an inner liner having a combustion chamber ignited by the fuel injected from the nozzle formed therein, and an outer liner installed to surround the inner liner;
a transition piece connected to the liner, and
It is installed on the liner, and comprises a flame propagation module for propagating the flame generated from the combustion chamber to the combustion chamber of another adjacent combustor,
The flame propagation module includes a trans tube connected to the inner liner through the outer liner, a support tube protruding from an outer circumferential surface of the outer liner to support the trans tube, and a cross frame tube coupled to the trans tube to transmit flame and a fixing member for fixing the transformer tube, the support tube, and the cross frame tube together. 22. The method of claim 21,
The fixing member is formed in a ring shape having elasticity, the gas turbine comprising an elastic ring surrounding the transformer tube, the support tube, and the cross frame tube. 23. The method of claim 22,
A first flange is formed on the support tube, a second flange is formed on the trans tube, a third flange is formed on the cross frame tube, and the first flange, the second flange and the second flange are formed on the elastic ring. 3 Gas turbine, characterized in that the coupling groove is inserted into the flange is formed. 24. The method of claim 23,
The gas turbine, characterized in that the first flange is formed with a protective rib protruding from the outer end of the first flange surrounding the outer peripheral surface of the second flange.

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