JP5762048B2 - Rotor cooling air supply pipe - Google Patents

Description

  The present invention relates to a rotor cooling air supply pipe that guides high-pressure air that is disposed in a passenger compartment, discharged from a compressor, and cooled to a predetermined temperature to a rotor and a moving blade.

  As a rotor cooling air supply pipe that guides (high-pressure) air that is disposed in a passenger compartment, discharged from a compressor, and cooled to a predetermined temperature to a rotor and a moving blade, for example, in FIG. A “high pressure air introduction pipe” labeled 26 is known.

JP 11-36889 A

Now, the main functions (performance) required for the rotor cooling air supply pipe are the following four.
The first is “airtightness”. This is because the air in the passenger compartment where the rotor cooling air supply pipe is arranged, that is, the air having a high temperature before being cooled to a predetermined temperature flows into the rotor cooling air supply pipe, This is a function necessary to prevent the temperature of the air passing through the rotor cooling air from being mixed with the low-temperature air cooled to a predetermined temperature and passing through the rotor cooling air supply pipe.

  The second is “stretchability” in the axial direction (longitudinal direction). This is because one end (upstream end) of the rotor cooling air supply pipe is fixed (restrained) to the passenger compartment, and the other end (downstream end) of the rotor cooling air supply pipe is fixed (restrained) to the intermediate shaft cover. This is a function necessary to absorb the difference in thermal elongation generated between the chamber and the intermediate shaft cover.

  The third is “rigidity”. This is because the rotor cooling air supply pipe is placed in the vehicle interior, that is, in the fast-flowing air from the compressor to the combustor, so that the rotor cooling air supply pipe is not greatly bent or vibrated by the air flow. This is a necessary function.

  The fourth is “attenuation”. This is because the rotor cooling air supply pipe is placed in the vehicle interior, that is, in the fast-flowing air from the compressor to the combustor, so that the rotor cooling air supply pipe is bent or vibrated by the air flow. If these flexures and vibrations are repeatedly applied to the rotor cooling air supply pipe without being attenuated, the rotor cooling air supply pipe may be cracked or broken. This function is necessary to prevent the supply pipe from cracking or breaking.

  However, none of the conventional rotor cooling air supply pipes satisfy all the above four functions. Therefore, development of a rotor cooling air supply pipe that satisfies all four functions has been demanded.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide a rotor cooling air supply pipe having all functions of airtightness, stretchability, rigidity, and damping.

The present invention employs the following means in order to solve the above problems.
A rotor cooling air supply pipe according to the present invention includes a first flange coupled to a flange provided at a downstream end of a pipe that extends through the vehicle interior and extends into the vehicle interior, and passes through the intermediate shaft cover to enter the vehicle interior. A second flange coupled to a flange provided at the upstream end of the extending pipe, and a multilayer structure is formed in the plate thickness direction between the first flange and the second flange, and in the axial direction. A bellows-type telescopic tube that can be expanded and contracted is provided.

According to the rotor cooling air supply pipe of the present invention, the inner space and the outer space are completely separated by the bellows-type telescopic tube, and the “airtightness” of the above functions is ensured.
Moreover, the bellows-type expansion / contraction tube can be expanded and contracted in the axial direction, and the “stretchability” of the above functions is ensured.
Further, the bellows-type expansion and contraction pipe has the pitch, plate thickness, number of peaks, and peak height of the bellows so as to have a necessary spring constant, so that “stiffness” of the above functions is ensured.
Furthermore, the bellows type expansion and contraction tube has a multilayer structure in the plate thickness direction, and when bent or vibrated by an air flow, the thin plates overlapped in the plate thickness direction rub against each other, and the bending and vibration are attenuated. Among the above functions, “attenuation” is ensured.
Thereby, it is possible to provide a rotor cooling air supply pipe having all the functions of airtightness, stretchability, rigidity, and damping.
Rotor cooling air supply pipe according to the present invention, the a first of the first tube-shaped member is fitted in the radially inner flange is joined to the first flange, the radius of the first tubular member a second tube-like member joined are fitted to outward, a fourth tube-like member joined the is fitted radially inwardly of the second flange to said second flange, said first fitted radially outward of the fourth tubular member and a third tube-like member which is joined, the bellows expansion has one end fitted in the radially outer side of said second tubular member which are joined, the other end is joined the third tube-shaped member radially outwardly fitted with the, and interlock hose disposed radially outwardly of the bellows expansion, said second tubular A fifth tubular member fitted radially outward of the member, and the fifth tubular member A ninth tubular member fitted radially outward, a seventh tubular member fitted radially outward of the third tubular member, and a radially outward fit of the seventh tubular member A tenth tubular member, wherein one end of the interlock hose is sandwiched and welded between the fifth tubular member and the ninth tubular member, and the other end is the seventh tubular member. The tubular member and the tenth tubular member are sandwiched and welded together. The first tubular member, the second tubular member, the fifth tubular member, and the ninth tubular member intersect one plane that is perpendicular to the axial direction, and the fourth tubular member The third tubular member, the seventh tubular member, and the tenth tubular member cross one other plane perpendicular to the axial direction .
According to the rotor cooling air supply pipe of the present invention, both ends of the bellows-type expansion and contraction pipe can be firmly joined to the first flange and the second flange, respectively, and the bellows is attached to the first flange or the second flange. The rigidity and airtightness of the joint between the bellows-type telescopic tube and the first flange or the second flange are more reliably ensured as compared to those in which both ends of the shape-shaped telescopic tube are directly joined to each other. be able to.

  In the rotor cooling air supply pipe, it is more preferable that a blade hose is provided on the radially outer side of the bellows-type telescopic pipe.

According to such a rotor cooling air supply pipe, the blade hose can be expanded and contracted in the axial direction by increasing or decreasing the distance between the stainless steel wires or the thin stainless steel plates, for example. The “stretchability” of the above functions is ensured.
In addition, the blade hose is, for example, a stainless steel wire or a stainless steel thin plate made into a net knitting (ajiroami), or a stainless steel thin plate wound around a hail (wound in a spiral) The “rigidity” of the above functions is ensured.
Further, the blade hose is, for example, a stainless steel wire or a stainless steel thin plate made of mesh knitting (ajiroami), or a stainless steel thin plate wound with a hail (coiled in a spiral shape). When it is bent or vibrated by the flow, the bellows and the blade hose are rubbed against each other, the bending and vibration are attenuated, and “damping” of the above functions is ensured.
Thereby, the “rigidity” and the “damping property” of the functions can be improved without inhibiting the “stretchability” of the functions.

  In the rotor cooling air supply pipe, it is further preferable that an interlock hose is provided on the radially outer side of the bellows type expansion and contraction pipe.

According to such a rotor cooling air supply pipe, the interlock hose is combined so that the stainless steel thin plates are U-shaped in cross section and has a spiral structure, and the interval between the stainless steel thin plates is widened. By being narrowed or narrowed, it can be expanded and contracted in the axial direction, and “stretchability” of the above functions is ensured.
In addition, the interlock hose is combined with a stainless steel thin plate in a U-shaped cross-sectional view and has a spiral structure, and “rigidity” of the above functions is ensured.
Furthermore, the interlock hose is combined with a stainless steel thin plate in a U-shaped cross section and has a spiral structure, and when bent or vibrated by an air flow, the stainless steel thin plates rub against each other. Thus, the bending and vibration are attenuated, and “attenuation” of the above functions is ensured.
Thereby, the “rigidity” and the “damping property” of the functions can be improved without inhibiting the “stretchability” of the functions.
A rotor cooling air supply pipe according to the present invention includes a first flange coupled to a flange provided at a downstream end of a pipe that extends through the vehicle interior and extends into the vehicle interior, and passes through the intermediate shaft cover to enter the vehicle interior. A second flange coupled to a flange provided at the upstream end of the extending pipe, and a multilayer structure in the plate thickness direction between the first flange and the second flange, and is extendable in the axial direction. A formed bellows-type telescopic tube, a first tubular member fitted inside the first flange and joined to the first flange, and fitted radially outside the first tubular member A second tubular member joined together, a fourth tubular member fitted inside the second flange and joined to the second flange, and a radial direction of the fourth tubular member A third tubular member fitted and joined to the outside; The bellows-type telescopic tube has one end fitted and joined to the radially outer side of the second tubular member, and the other end fitted and joined to the radially outer side of the third tubular member. the interlocking hose is provided radially outwardly of the bellows expansion, a fifth tubular member which is fitted radially outward of said second tubular member, the radial direction of the fifth tubular member a ninth tubular member fitted to the outside, the seventh tubular member that is fitted radially outward of the third tubular member, fitted radially outward of the seventh tubular member anda tenth tubular member, the interlock hose has one end the fifth tubular member and the ninth tubular member and the sandwiched by welding of, and the other end seventh tubular member wherein is is welded sandwiched tenth tubular member, the Wherein said portion is fitted to the interlock hose 5 of the tubular member and the said portion being fitted into the interlock hose seventh tubular member, a portion which tapers toward the back of the interlocking hose The first tubular member, the second tubular member, the fifth tubular member, and the ninth tubular member intersect one plane perpendicular to the axial direction, and the first tubular member, The four tubular members, the third tubular member, the seventh tubular member, and the tenth tubular member intersect one other plane perpendicular to the axial direction .
According to such a rotor cooling air supply pipe, even when the interlock hose is formed in a spiral shape, the first and second inner tubular members can be easily fitted to both ends of the interlock hose. Both ends of the lock hose can be easily joined to the first flange and the second flange, respectively.

  In the rotor cooling air supply pipe, it is more preferable that a blade hose is provided on the radially outer side of the bellows-type telescopic pipe and on the radially inner side of the interlock hose.

According to such a rotor cooling air supply pipe, the blade hose can be expanded and contracted in the axial direction by increasing or decreasing the distance between the stainless steel wires or the thin stainless steel plates, for example. The “stretchability” of the above functions is ensured.
In addition, the blade hose is, for example, a stainless steel wire or a stainless steel thin plate made into a net knitting (ajiroami), or a stainless steel thin plate wound around a hail (wound in a spiral) The “rigidity” of the above functions is ensured.
Further, the blade hose is, for example, a stainless steel wire or a stainless steel thin plate made of mesh knitting (ajiroami), or a stainless steel thin plate wound with a hail (coiled in a spiral shape). When it is bent or vibrated by the flow, the bellows and the blade hose are rubbed against each other, the bending and vibration are attenuated, and “damping” of the above functions is ensured.
Thereby, the “rigidity” and the “damping property” of the above functions can be further improved without inhibiting the “stretchability” of the above functions.

  In the rotor cooling air supply pipe, it is more preferable that the outer peripheral surface of the bellows-type telescopic pipe located on the outermost side in the radial direction is in contact with the inner peripheral surface of the blade hose.

  According to such a rotor cooling air supply pipe, when the airflow is deflected or vibrated, the outer peripheral surface of the bellows-type expansion / contraction pipe located on the outermost side in the radial direction and the inner peripheral surface of the blade hose rub against each other. Thus, since these bending and vibration are attenuated, the “attenuation” of the above functions can be further improved.

  In the rotor cooling air supply pipe, it is more preferable that a tubular member functioning as a flow guide is provided on the radially inner side of the bellows type expansion and contraction pipe.

  According to such a rotor cooling air supply pipe, the flow path (pipe) resistance in the rotor cooling air supply pipe can be reduced, and the flow of the cooling air flowing in the rotor cooling air supply pipe can be adjusted to prevent disturbance. The flow can be reduced (rectified).

  A gas turbine according to the present invention includes any one of the above rotor cooling air supply pipes.

The gas turbine according to the present invention includes the rotor cooling air supply pipe having all the functions of airtightness, stretchability, rigidity, and damping.
Thereby, the total amount of cooling air guided to the rotor and the moving blades via the rotor cooling air supply pipe can be reduced, and the performance of the gas turbine can be improved.

  According to the present invention, there is an effect that it is possible to provide a rotor cooling air supply pipe having all the functions of airtightness, stretchability, rigidity, and damping.

It is the figure which looked at the rotor cooling air supply pipe | tube which concerns on 1st Embodiment of this invention from the side, Comprising: An upper half part is sectional drawing, and a lower half part is a side view. FIG. 2 is an enlarged view of a circle indicated by a solid line in FIG. 1. It is the figure which looked at the rotor cooling air supply pipe | tube which concerns on 2nd Embodiment of this invention from the side, Comprising: An upper half part is sectional drawing, and a lower half part is a side view. FIG. 4 is an enlarged view of a circle indicated by a solid line in FIG. 3. It is the figure which looked at the rotor cooling air supply pipe | tube which concerns on 3rd Embodiment of this invention from the side, Comprising: An upper half part is sectional drawing, and a lower half part is a side view. FIG. 6 is an enlarged view of a circle indicated by a solid line in FIG. 5. It is the figure which looked at the rotor cooling air supply pipe | tube which concerns on 4th Embodiment of this invention from the side, Comprising: An upper half part is sectional drawing, and a lower half part is a side view. FIG. 8 is an enlarged view of a circle indicated by a solid line in FIG. 7. It is the figure which looked at the rotor cooling air supply pipe | tube which concerns on 5th Embodiment of this invention from the side, Comprising: An upper half part is sectional drawing, and a lower half part is a side view. FIG. 10 is an enlarged view of a circle indicated by a solid line in FIG. 9.

[First Embodiment]
Hereinafter, a rotor cooling air supply pipe according to a first embodiment of the present invention will be described with reference to FIGS. 1 and 2.
FIG. 1 is a side view of a rotor cooling air supply pipe according to the present embodiment, where the upper half is a cross-sectional view, the lower half is a side view, and FIG. 2 is the inside of a circle indicated by a solid line in FIG. It is the figure expanded and shown.

As shown in at least one of FIG. 1 or FIG. 2, the rotor cooling air supply pipe 10 according to the present embodiment includes a first flange 11, a first tubular member 12, a second tubular member 13, A bellows-type telescopic tube 14, a third tubular member 15, a fourth tubular member 16, and a second flange 17 are provided.
The first flange 11 passes through a flange (not shown) provided at a downstream end of a pipe (not shown) that extends through the vehicle compartment (not shown) and extends into the vehicle compartment, and bolts and nuts (not shown). A plurality of through-holes (not shown) that pass through in the plate thickness direction (left-right direction in FIG. 1) and receive the shaft portion of the bolt are provided in the circumferential direction.

One end (upstream end) of the first tubular member 12 is fitted and welded to the inside (radially inner side) of the first flange 11, and the other end (downstream end) is inside the second tubular member 13 ( It is a tubular (tubular) member that is fitted in and welded to the inside in the radial direction.
One end (upstream end) of the second tubular member 13 is fitted and welded to the outside (radially outer side) of the first tubular member 12, and the other end (downstream end) is inside the bellows-type telescopic tube 14. It is a tubular (tubular) member that is fitted (welded in the radial direction) and welded.

The bellows-type expandable tube 14 is a tubular (tubular) member having a three-layer structure in the plate thickness direction and capable of expanding and contracting in the axial direction (longitudinal direction), and one end (upstream end) thereof is a second tubular shape. The outer end (radially outer side) of the member 13 is fitted and welded, and the other end (downstream end) is fitted and welded to the outer side (radially outer side) of the third tubular member 15.
One end (upstream end) of the third tubular member 15 is fitted and welded to the inside (radially inner side) of the bellows-type telescopic tube 14, and the other end (downstream end) is outside the fourth tubular member 16 ( It is a tubular (tubular) member that is fitted on the outer side in the radial direction and welded.

One end (upstream end) of the fourth tubular member 16 is fitted and welded to the inside (radially inner side) of the third tubular member 15, and the other end (downstream end) is inside the second flange 17 ( It is a tubular (tubular) member that is fitted in and welded to the inside in the radial direction.
The second flange 17 includes a flange (not shown) provided at an upstream end of a pipe (not shown) extending through the intermediate shaft cover (not shown) and extending into the vehicle interior, and a bolt and a nut (not shown). A plurality of through-holes (not shown) that pass through in the plate thickness direction (left-right direction in FIG. 1) and receive the bolt shaft portion are provided in the circumferential direction. .

Here, the 1st flange 11 and the 1st tubular member 12 are the welding part 21 formed between the end surface of the 1st flange 11, and the outer peripheral surface of the 1st tubular member 12, and the 1st Joined by a welded portion 22 formed between the inner peripheral surface of the flange 11 and the end surface of the first tubular member 12.
Further, the first tubular member 12 and the second tubular member 13 include a welded portion 23 formed between the end surface of the first tubular member 12 and the inner peripheral surface of the second tubular member 13, and Joined by a welded portion 24 formed between the outer peripheral surface of one tubular member 12 and the end surface of the second tubular member 13.
Further, the second tubular member 13 and the bellows-type expandable tube 14 are joined by a welded portion (not shown) formed between the outer peripheral surface of the second tubular member 13 and the end surface of the bellows-type expandable tube 14. Has been.

Furthermore, the bellows-type expandable tube 14 and the third tubular member 15 are joined by a welded portion 25 formed between the end surface of the bellows-type expandable tube 14 and the outer peripheral surface of the third tubular member 15. .
Furthermore, the third tubular member 15 and the fourth tubular member 16 are a welded portion 26 formed between the end surface of the third tubular member 15 and the fourth tubular member 16, and the third tubular member. The welded portion 27 is formed between the inner peripheral surface of the member 15 and the end surface of the fourth tubular member 16.
Furthermore, the fourth tubular member 16 and the second flange 17 include a welded portion 28 formed between the end surface of the fourth tubular member 16 and the inner peripheral surface of the second flange 17, and the fourth. These are joined by a welded portion 29 formed between the outer peripheral surface of the tubular member 16 and the end surface of the second flange 17.

According to the rotor cooling air supply pipe 10 according to the present embodiment, the inner space and the outer space are completely separated by the bellows-type telescopic pipe 14 and “airtightness” is ensured.
Further, the bellows-type expansion / contraction tube 14 can be expanded and contracted in the axial direction, and "stretchability" is ensured.
Further, the bellows-type expansion and contraction tube 14 is determined in terms of pitch, plate thickness, number of peaks, and peak height of the bellows so as to have a necessary spring constant, so that “rigidity” is ensured.
Furthermore, the bellows-type expandable tube 14 has a three-layer structure in the plate thickness direction, and when bent or vibrated by an air flow, the thin plates overlapped in the plate thickness direction rub against each other, and the bending and vibration are attenuated. As a result, “attenuation” is ensured.
Thereby, the rotor cooling air supply pipe | tube 10 provided with all the functions of airtightness, elasticity, rigidity, and a damping property can be provided.

[Second Embodiment]
A rotor cooling air supply pipe according to a second embodiment of the present invention will be described with reference to FIGS. 3 and 4.
FIG. 3 is a side view of the rotor cooling air supply pipe according to this embodiment. The upper half is a cross-sectional view, the lower half is a side view, and FIG. 4 is a circle in FIG. It is the figure expanded and shown.

As shown in at least one of FIGS. 3 and 4, the rotor cooling air supply pipe 30 according to the present embodiment includes a fifth tubular member 31, a sixth tubular member 32, a linear blade hose 33, a seventh It differs from that of the first embodiment described above in that it further includes a tubular member 34 and an eighth tubular member 35. Since other components are the same as those of the first embodiment described above, description of these components is omitted here.
In addition, the same code | symbol is attached | subjected to the member same as 1st Embodiment mentioned above.

The fifth tubular member 31 is entirely fitted to the outside (radially outer side) of the second tubular member 13, and one end (upstream end) is welded and joined to the outer peripheral surface of the second tubular member 13 ( (Cylindrical) member.
The sixth tubular member 32 is entirely fitted to the outer side (radially outer side) of the fifth tubular member 31 and one end (upstream end) is welded and joined to the outer peripheral surface of the fifth tubular member 31 ( (Cylindrical) member.

  The linear blade hose 33 is a tubular (tubular) member in which a number of stainless steel wires (not shown) are braided, and one end (upstream end) of the linear blade hose 33 is connected to the fifth tubular member 31. The other end (downstream end) is sandwiched between the sixth tubular member 32 and welded, and the other end (downstream end) is sandwiched between the seventh tubular member 34 and the eighth tubular member 35 and welded.

The seventh tubular member 34 is entirely fitted to the outer side (radially outer side) of the third tubular member 15, and one end (downstream end) is welded and joined to the outer peripheral surface of the third tubular member 15 ( (Cylindrical) member.
The whole of the eighth tubular member 35 is fitted to the outside (radially outer side) of the seventh tubular member 34, and one end (downstream end) is welded and joined to the outer peripheral surface of the seventh tubular member 34 ( (Cylindrical) member.

Here, the second tubular member 13 and the fifth tubular member 31 are joined by a welded portion 41 formed between the outer peripheral surface of the second tubular member 13 and the end surface of the fifth tubular member 31. ing.
The fifth tubular member 31, the linear blade hose 33, and the sixth tubular member 32 are the outer peripheral surface of the fifth tubular member 31, the end surface of the linear blade hose 33, and the end surface of the sixth tubular member 32. Are joined by a welded portion 42 formed therebetween.

Further, the third tubular member 15 and the seventh tubular member 34 are joined by a welded portion 43 formed between the outer peripheral surface of the third tubular member 15 and the end surface of the seventh tubular member 34. Yes.
The seventh tubular member 34, the linear blade hose 33, and the eighth tubular member 35 are the outer peripheral surface of the seventh tubular member 34, the end surface of the linear blade hose 33, and the end surface of the eighth tubular member 35. And a welded portion 44 formed between the two.

According to the rotor cooling air supply pipe 30 according to the present embodiment, the linear blade hose 33 can be expanded and contracted in the axial direction by increasing or decreasing the distance between the stainless steel wires constituting the blade hose 33. Therefore, “stretchability” is ensured.
In addition, the linear blade hose 33 is made of stainless steel wire braided, and “rigidity” is ensured.
Further, the wire braid hose 33 is made of stainless steel wire braided, and when bent or vibrated by an air flow, the stainless steel wires rub against each other, and the bending and vibration are attenuated. As a result, “attenuation” is ensured.
Thereby, “rigidity” and “damping property” can be improved without inhibiting “stretchability”.
Other functions and effects are the same as those of the above-described first embodiment, and thus description thereof is omitted here.

[Third Embodiment]
A rotor cooling air supply pipe according to a third embodiment of the present invention will be described with reference to FIGS.
FIG. 5 is a side view of the rotor cooling air supply pipe according to the present embodiment. The upper half is a cross-sectional view, the lower half is a side view, and FIG. 6 is a circle shown by a solid line in FIG. It is the figure expanded and shown.

As shown in at least one of FIG. 5 and FIG. 6, the rotor cooling air supply pipe 50 according to the present embodiment is replaced with the sixth tubular member 32, the linear blade hose 33, and the eighth tubular member 35. It differs from the thing of 2nd Embodiment mentioned above by the point provided with the 9th tubular member 51, the interlock hose 52, and the 10th tubular member 53. FIG. Since other components are the same as those of the second embodiment described above, description of these components is omitted here.
In addition, the same code | symbol is attached | subjected to the member same as 2nd Embodiment mentioned above.

The ninth tubular member 51 is entirely fitted on the outer side (radially outer side) of the fifth tubular member 31 and one end (upstream end) is welded and joined to the outer peripheral surface of the fifth tubular member 31 ( (Cylindrical) member.
The tenth tubular member 53 is entirely fitted on the outside (radially outer side) of the seventh tubular member 34, and one end (downstream end) is welded and joined to the outer peripheral surface of the seventh tubular member 34 ( (Cylindrical) member.

  The interlock hose 52 is a tubular (cylindrical) member that is combined with a stainless steel thin plate in a U shape in cross section and has a spiral structure, and one end (upstream end) of the interlock hose 52 is a fifth member. The tubular member 31 and the ninth tubular member 51 are sandwiched and welded, and the other end (downstream end) is sandwiched between the seventh tubular member 34 and the tenth tubular member 53 and welded. Has been.

Here, the fifth tubular member 31 and the interlock hose 52 are joined by a welded portion 61 formed between the outer peripheral surface of the fifth tubular member 31 and the end surface of the interlock hose 52.
The interlock hose 52 and the ninth tubular member 51 are joined by a welded portion 62 formed between the outer peripheral surface of the interlock hose 52 and the end surface of the ninth tubular member 51.

Further, the seventh tubular member 34 and the interlock hose 52 are joined by a welded portion 63 formed between the outer peripheral surface of the seventh tubular member 34 and the end surface of the interlock hose 52.
Furthermore, the interlock hose 52 and the tenth tubular member 53 are joined by a welded portion 64 formed between the outer peripheral surface of the interlock hose 52 and the end surface of the tenth tubular member 53.

According to the rotor cooling air supply pipe 50 according to the present embodiment, the interlock hose 52 is combined so that the thin stainless steel plates are U-shaped in cross section and has a spiral structure, and the thin stainless steel plates are connected to each other. By expanding or narrowing the interval, the expansion and contraction in the axial direction is possible, and “stretchability” is ensured.
In addition, the interlock hose 52 is combined with a stainless steel thin plate in a U shape in a sectional view and has a spiral structure, so that “rigidity” is ensured.
Further, the interlock hose 52 is combined so that the stainless steel thin plates have a U-shaped cross section and has a spiral structure. When the interlock hose 52 is bent or vibrated by an air flow, the stainless steel thin plates are rubbed with each other. Accordingly, the bending and vibration are attenuated, and “attenuation” is ensured.
Thereby, “rigidity” and “damping property” can be improved without inhibiting “stretchability”.
Other functions and effects are the same as those of the above-described second embodiment, and thus description thereof is omitted here.

[Fourth Embodiment]
A rotor cooling air supply pipe according to a fourth embodiment of the present invention will be described with reference to FIGS.
FIG. 7 is a side view of the rotor cooling air supply pipe according to the present embodiment. The upper half is a cross-sectional view, the lower half is a side view, and FIG. 8 is a circle in FIG. It is the figure expanded and shown.

As shown in at least one of FIGS. 7 and 8, the rotor cooling air supply pipe 70 according to the present embodiment includes the ninth tubular member 51, the interlock hose 52, and the tenth described in the third embodiment. It differs from the thing of 2nd Embodiment mentioned above by the point further provided with the tubular member 53. FIG. Since other components are the same as those of the second embodiment described above, description of these components is omitted here.
In addition, the same code | symbol is attached | subjected to the member same as 2nd Embodiment mentioned above.

According to the rotor cooling air supply pipe 70 according to the present embodiment, the interlock hose 52 is combined so that the thin stainless steel plates are U-shaped in cross section and has a spiral structure, and the thin stainless steel plates are connected to each other. By expanding or narrowing the interval, the expansion and contraction in the axial direction is possible, and “stretchability” is ensured.
In addition, the interlock hose 52 is combined with a stainless steel thin plate in a U shape in a sectional view and has a spiral structure, so that “rigidity” is ensured.
Further, the interlock hose 52 is combined so that the stainless steel thin plates have a U-shaped cross section and has a spiral structure. When the interlock hose 52 is bent or vibrated by an air flow, the stainless steel thin plates are rubbed with each other. Accordingly, the bending and vibration are attenuated, and “attenuation” is ensured.
Thereby, “rigidity” and “damping property” can be improved without inhibiting “stretchability”.
Other functions and effects are the same as those of the above-described second embodiment, and thus description thereof is omitted here.

[Fifth Embodiment]
A rotor cooling air supply pipe according to a fifth embodiment of the present invention will be described with reference to FIGS. 9 and 10.
FIG. 9 is a side view of the rotor cooling air supply pipe according to the present embodiment, where the upper half is a cross-sectional view, the lower half is a side view, and FIG. 10 is the inside of a circle indicated by a solid line in FIG. It is the figure expanded and shown.

As shown in at least one of FIG. 9 and FIG. 10, the rotor cooling air supply pipe 90 according to this embodiment includes an eleventh tubular member 91 instead of the first tubular member 12. It differs from that of the fourth embodiment described above. Since other components are the same as those of the fourth embodiment described above, description of these components is omitted here.
In addition, the same code | symbol is attached | subjected to the member same as 4th Embodiment mentioned above.

  One end (upstream end) of the eleventh tubular member 91 is fitted and welded to the inside (radially inner side) of the first flange 11, and the other end (downstream end) is inside the third tubular member 15 ( This is a tubular (tubular) member that is located radially inward) and extends to the vicinity of the end face of the fourth tubular member 16.

Here, the first flange 11 and the eleventh tubular member 91 are the welded portion 21 formed between the end surface of the first flange 11 and the outer peripheral surface of the eleventh tubular member 91, and the first Joined by a welded portion 22 formed between the inner peripheral surface of the flange 11 and the end surface of the eleventh tubular member 91.
Further, the eleventh tubular member 91 and the second tubular member 13 are joined by a welded portion 24 formed between the outer peripheral surface of the eleventh tubular member 91 and the end surface of the second tubular member 13, The other end of the eleventh tubular member 91 is in a free state (not connected to the third tubular member 15 and the fourth tubular member 16) in the axial direction and the radial direction.

According to the rotor cooling air supply pipe 90 according to the present embodiment, the eleventh tubular member 91 that functions as a flow guide is provided on the radially inner side of the bellows-type telescopic pipe 14. The flow path (pipe line) resistance in 90 can be reduced, and the flow of the cooling air flowing in the rotor cooling air supply pipe 90 can be adjusted to a flow without turbulence (rectification).
Other functions and effects are the same as those of the above-described fourth embodiment, and thus description thereof is omitted here.
Further, according to the gas turbine (not shown) including any of the rotor cooling air supply pipes according to the above-described embodiment, the rotor (not shown) and the moving blades (not shown) are provided via the rotor cooling air supply pipe. The total amount of cooling air led to the gas turbine can be reduced, and the performance of the gas turbine can be improved.

Note that the present invention is not limited to the above-described embodiment, and can be modified and changed as necessary.
For example, the eleventh tubular member 91 described in the fourth embodiment may be provided instead of the first tubular member 12 described in the first to third embodiments.

  In the above-described embodiment, the bellows-type expansion / contraction tube 14 has been described by taking a three-layer structure in the thickness direction as a specific example, but the present invention is not limited to this. It may be a layer structure or a four-layer structure or more.

  Furthermore, in the above-described embodiment, as the blade hose, the linear blade hose 33 in which a large number of stainless steel wires (not shown) are braided is described as a specific example. However, the present invention is not limited to this, and one stainless steel thin plate (not shown) wound in a hail (spirally wound) or many stainless steel thin plates (not shown) It may be knitted.

Furthermore, it is more preferable that the outer peripheral surface of the bellows-type telescopic tube 14 located on the outermost side in the radial direction and the inner peripheral surface of the blade hose are in contact with each other.
With this configuration, when the airflow is deflected or vibrated, the outer peripheral surface of the bellows-type telescopic tube 14 located on the outermost side in the radial direction and the inner peripheral surface of the blade hose rub against each other. Since the vibration is attenuated, the “damping property” can be further improved.

DESCRIPTION OF SYMBOLS 10 Rotor cooling air supply pipe 11 1st flange 14 Bellows type expansion-contraction pipe 17 2nd flange 30 Rotor cooling air supply pipe 33 Linear blade hose (blade hose)
50 Rotor cooling air supply pipe 52 Interlock hose 70 Rotor cooling air supply pipe 90 Rotor cooling air supply pipe 91 Eleventh tubular member

Claims (7)

A first flange coupled to a flange provided at a downstream end of a pipe extending through the passenger compartment and into the passenger compartment;
A second flange coupled to a flange provided at an upstream end of a pipe passing through the intermediate shaft cover and extending into the vehicle interior;
Between these first flange and second flange, a bellows type expansion tube having a multilayer structure in the plate thickness direction and capable of expansion and contraction in the axial direction;
A first tube-like member joined to the first flange is fitted in the radially inner side of said first flange,
A second tube-like member joined fitted with radially outwardly of the first tubular member,
A fourth tube-like member which is joined to said second flange being fitted radially inwardly of said second flange,
And a third tube-like member joined fitted in radially outward of said fourth tube-like member,
The bellows expansion has one end joined fitted radially outward of said second tubular member are joined and the other end is fitted radially outward of the third tubular member,
An interlock hose provided on the radially outer side of the bellows-type telescopic tube;
A fifth tubular member fitted radially outward of the second tubular member;
A ninth tubular member fitted radially outward of the fifth tubular member;
A seventh tubular member fitted radially outward of the third tubular member;
A tenth tubular member fitted radially outward of the seventh tubular member;
One end of the interlock hose is sandwiched and welded between the fifth tubular member and the ninth tubular member, and the other end is sandwiched between the seventh tubular member and the tenth tubular member. Welded and
The first tubular member, the second tubular member, the fifth tubular member, and the ninth tubular member intersect one plane that is perpendicular to the axial direction;
The fourth tubular member, the third tubular member, the seventh tubular member, and the tenth tubular member intersect one other plane perpendicular to the axial direction. Rotor cooling air supply pipe. Radially outwardly of the bellows expansion and radially inward of the interlocking hose, the rotor cooling air supply tube according to claim 1, characterized in that the blade hose is provided. 3. The rotor cooling air supply pipe according to claim 2 , wherein an outer peripheral surface of the bellows-type telescopic pipe located on the outermost side in a radial direction is in contact with an inner peripheral face of the blade hose. The rotor cooling air supply pipe according to any one of claims 1 to 3 , wherein a tubular member functioning as a flow guide is provided on an inner side in the radial direction of the bellows-type expansion and contraction pipe. A first flange coupled to a flange provided at a downstream end of a pipe extending through the passenger compartment and into the passenger compartment;
A second flange coupled to a flange provided at an upstream end of a pipe passing through the intermediate shaft cover and extending into the vehicle interior;
Between these first flange and second flange, a bellows type expansion tube having a multilayer structure in the plate thickness direction and capable of expansion and contraction in the axial direction;
A first tubular member fitted radially inward of the first flange and joined to the first flange;
A second tubular member fitted and joined radially outward of the first tubular member;
A fourth tubular member fitted inside the second flange and joined to the second flange in the radial direction;
A third tubular member fitted and joined to a radially outer side of the fourth tubular member,
One end of the bellows-type telescopic tube is fitted and joined to the radially outer side of the second tubular member, and the other end is fitted and joined to the radially outer side of the third tubular member,
An interlock hose provided on the radially outer side of the bellows-type telescopic tube;
A fifth tubular member which is fitted radially outward of said second tubular member,
A ninth tubular member fitted radially outward of the fifth tubular member;
A seventh tubular member that is fitted radially outward of the third tubular member,
Anda tenth tubular member that is fitted radially outward of the seventh tubular member,
One end of the interlock hose is sandwiched between the fifth tubular member and the ninth tubular member and welded, and the other end is sandwiched between the seventh tubular member and the tenth tubular member. Welded and joined
The portion of the fifth tubular member fitted into the interlock hose and the portion of the seventh tubular member fitted into the interlock hose become narrower toward the back of the interlock hose. Part is formed ,
The first tubular member, the second tubular member, the fifth tubular member, and the ninth tubular member intersect one plane that is perpendicular to the axial direction;
The fourth tubular member, the third tubular member, the seventh tubular member, and the tenth tubular member intersect one other plane perpendicular to the axial direction. Rotor cooling air supply pipe. The said bellows-type expansion-contraction pipe | tube is made into the multilayered structure in the said plate | board thickness direction so that the thin plates which overlapped in the plate | board thickness direction may rub against each other when vibrated , The any one of Claim 1 to 5 characterized by the above-mentioned. The rotor cooling air supply pipe according to claim 1. A gas turbine comprising the rotor cooling air supply pipe according to any one of claims 1 to 6 .

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