JP2000130756A - Bypass valve driving device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To unify the mixing ratio of a fuel and air in all combustion areas provided in the tail cylinders of respective combustors and generate a combustion gas optimum to the driving of a gas turbine, by a method wherein driving shafts and pivoting follower bypass valves are pivoted by follower shafts, which are pivoted by a neighboring main driving shaft. SOLUTION: A neighboring main moving shaft 23 and a follower shaft are arranged in parallel in the axial directions thereof and are connected by a connecting rod 25 through a link mechanism 26, so as to be pivoted through a link device by the movement of an outer wheel into the peripheral direction of a wheel chamber. In this case, the follower shaft 21 is pivoted by the pivoting of the neighboring main moving shaft 23, effecting the opening and closing operation of a main bypass valve, while the opening and closing operation of a follower bypass valve 20 is effected so as to be coping to the opening and closing operation of the main bypass valve 22. According to the method, the opening and closing motion of the follower bypass valve 20 can be effected even when the follower shaft 21 is not projected out of the wheel chamber whereby the mixing ratio of a fuel and air in the combustion area of respective tail cylinders of a combustor, which are arranged circumferentially in the wheel chamber, thereby permitting the increase of a combustion efficiency.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is to adjust the ratio of fuel and air supplied to a combustion zone provided downstream of a combustor transition piece of a gas turbine combustor to a ratio with good combustion efficiency. In addition, the present invention relates to a bypass valve driving device that controls opening and closing of a bypass valve that adjusts a flow rate of compressed air supplied to a combustion area.

[0002]

2. Description of the Related Art As shown in FIG. 5, in a gas turbine combustor 01, a fuel F injected from a fuel nozzle 03 provided in a combustor inner cylinder 02 and introduced into a combustor transition piece 05, Compressed air PA discharged from the compressor 04 and introduced into the combustor transition piece 05 is burned in a combustion zone provided on the downstream side of the combustor transition piece 05, and a high-temperature and high-pressure combustion gas CG is produced. The stationary vane 06 installed on the downstream side of the combustion area
Thus, the flow velocity and the direction of the flow of the combustion gas CG are set as designed and supplied to the moving blades 07 to be operated, and the compressor 0 is operated.
4 as well as output excess driving force to the outside.

[0003] A compressor 04 is also provided in a combustor inner cylinder 02.
The compressed air PA is supplied from the fuel nozzle 03, and a fuel mixture, which is a mixture of the fuel F supplied from the fuel nozzle 03 provided for flame holding among the fuel nozzles 03, is ignited in front of the fuel nozzle 03. Flames are always formed.
That is, the fuel is injected from the fuel nozzle 03 into the combustion zone,
The fuel F which is ignited by flame holding and flows from the combustor inner cylinder 02 in a state of a combustion gas CG having a high fuel F concentration.
Is supplied.

On the other hand, in the combustion area, the compressor 10
Of the compressed air PA discharged into the compressor, excluding the compressed air PA supplied to the combustor inner cylinder 02 described above.
Flows into the combustor transition piece 05 from an opening provided in the vehicle interior 010 and is supplied. The flow rate of the compressed air PA that flows into the combustion region from the opening that opens into the vehicle interior 010 is such that the mixing ratio with the fuel F supplied from the combustor inner cylinder 03 is the highest in the combustion region in the combustion efficiency. In order to adjust the ratio to generate a combustion gas CG with good combustion,
The opening and closing operation of the bypass valve 08, which is installed inside the vicinity of the opening, is controlled.

[0005] As shown in FIG. 6B, 20 bypass valves 08 are provided in each of the combustor transition pieces 05 which are provided in the circumferential direction of the vehicle compartment 010.
The opening and closing operation of the drive valve 8 is performed by rotating a drive shaft 09 which is attached to each bypass valve 08. That is, as shown in FIG. 6A, which is a detailed view showing a part of the installation portion of the bypass valve 08 shown in FIG.
The drive shaft 09 whose base end is connected to one end of the stem of each bypass valve 08 is installed so as to penetrate the vehicle room 010 and protrude outside the vehicle room 010, and FIG.
As shown in FIG. 7, the radial arrangement is provided around the axis of the vehicle interior 010.

[0006] The front end of each drive shaft 09 is mounted in the passenger compartment 01.
The inner ring 011 fixed to the outer peripheral surface is connected via a link device to the side surface of the outer ring which can be moved by an actuator, and is connected to the outer ring 012 on the inner ring 011.
By rotating, each drive shaft 09 is rotated simultaneously,
The bypass valve 08 opens and closes at the same time, so that the compressed air PA is uniformly supplied to the combustion zone on the downstream side of each combustor transition piece 05.

However, in this manner, the opening and closing of the bypass valve 08 is performed simultaneously, and the
Compressed air PA flowing into the combustor transition piece 05 provided
Of the stationary blade 06 on the downstream side of the combustor transition piece 05.
The mixing ratio between the fuel F and the compressed air PA supplied to the combustion zone provided on the upstream side of the position where the fuel gas is provided is adjusted so that a suitable high-temperature, high-pressure combustion gas CG is generated. In the conventional gas turbine combustor 01, as described above, the drive shaft 09 for opening and closing the bypass valve 08 has a structure protruding outside the vehicle compartment 010, and has a substantially equal pitch over the entire circumference of the vehicle compartment 010. There is a case where a trouble occurs due to the arrangement.

That is, depending on the model of the gas turbine, a casing horizontal flange 013 for tightening and integrating the casing 010 formed by being divided into upper and lower parts and the drive shaft 09 interfere with each other, and a part of the casing is partially interfered with. It may not be possible to install a drive shaft 09 for opening and closing the bypass valve 08.

That is, as shown in part A of FIG. 6B, a casing horizontal flange 013 and a bypass pipe 014 for preventing the drive shaft 09 from protruding outside the casing 010 are provided outside the casing 010. The bypass valve 08 provided in the combustor transition piece 05 disposed inside the cabin 010 at the circumferential position in which these are provided is provided with the vehicle cabin 010
Cannot be opened and closed by a drive shaft 09 driven from outside.

Therefore, such a cabin horizontal flange 01
The bypass valve 08, which is arranged at a circumferential position that interferes with the third and the like and cannot be controlled to open and close, has a preset opening and closing degree before the operation of the gas turbine, and must always operate at this opening and closing degree. Therefore, the combustion in the combustion zone of a specific combustor transition piece 05 of the gas turbine combustor 1 is as follows:
There is a problem that the combustion efficiency becomes poor and the gas turbine combustor 1 as a whole must be operated with poor combustion efficiency.

In order to solve such a problem, all of the bypass valves 0 provided in the combustor transition piece 05, which are arranged at equal pitches in the circumferential direction of the casing 010, are provided.
8 are evenly opened and closed so that all combustion in the combustion region formed on the downstream side of each combustor transition piece 05 is performed efficiently, and the combustion efficiency of the entire gas turbine combustor 01 is improved. The drive shaft 09 for opening and closing the bypass valve 08
Are provided so as to protrude outside the vehicle compartment 010, and therefore, the structural shape outside the vehicle compartment 010 is restricted, and the gas turbine combustor 01
This causes a problem in the arrangement of the plant.

[0012]

SUMMARY OF THE INVENTION The present invention relates to a fuel / air ratio in the combustion zone of a conventional gas turbine combustor.
In order to control the air-fuel ratio, the drive valve is opened and closed only by the drive shaft 09 provided on the bypass valve 08 for opening and closing one bypass valve. In addition, the drive shaft 09 passes through the vehicle compartment 09. Since the drive shaft 09 is provided so as to protrude outward, the structure of the outside of the vehicle compartment is restricted depending on the position where the drive shaft 09 protrudes from the vehicle compartment 010. Further, depending on the structure of the vehicle exterior, the horizontal flange of the vehicle compartment may be provided. In order to solve the problem that some bypass valves 08 cannot be opened and closed due to interference with obstacles such as 013, air-fuel ratio cannot be adjusted, and operation with good combustion efficiency cannot be performed, A driven shaft that is provided to be housed therein because the distal end cannot be protruded to the outside of the vehicle cabin to drive a bypass valve that is disposed in the circumferential direction where it is difficult to protrude the drive shaft To In order to drive a bypass valve provided in contact with the vehicle, an adjacent driving shaft that can be protruded to the outside of the vehicle cabin is connected with a connecting rod arranged in the vehicle cabin, and the driving shaft is driven in accordance with the rotation of the adjacent driving shaft. The driven shaft is also rotated so that opening / closing control corresponding to the opening / closing control of the bypass valve connected to the adjacent main driving shaft can be performed also for the bypass valve connected to the driven shaft. There is no limitation on the structural shape of the outside of the cabin that will be generated, and all the bypass valves arranged in the circumferential direction of the cabin are synchronized so that they can be constantly opened and closed, so that all the combustors By controlling the flow of compressed air into the transition piece to be uniform, the mixture ratio of fuel and air in all of the combustion zones provided in each transition piece of the combustor is made to have the highest combustion efficiency. Suitable for gas turbine drive High temperature, which make it possible to generate a high-pressure combustion gas, and to provide a bypass valve driving device for a gas turbine combustor.

[0013]

Therefore, the first aspect of the present invention provides the following means.

(1) The gas turbine combustor is provided in a plurality of combustor transition pieces arranged in a circumferential direction in a vehicle cabin, and is supplied to a combustion zone provided on the downstream side of the combustor transition piece. Of the combustor transition piece disposed at a circumferential position that interferes with obstacles such as a vehicle interior horizontal flange disposed outside the vehicle cabin among the bypass valves that control the air flow rate to suitably burn the fuel. The base end is connected to a valve stem for rotating a driven bypass valve provided inside, and the tip end does not protrude out of the vehicle interior, so that it fits in the interior of the vehicle interior, and is rotated around the axis. A driven shaft that constitutes a drive shaft that controls opening and closing of a driven bypass valve by movement is provided.

(2) The gas turbine combustor is provided in a plurality of combustor transition pieces arranged in the vehicle interior in the circumferential direction, and is supplied to a combustion zone provided on the downstream side of the combustor transition piece. Of the bypass valve for controlling the air flow rate for suitably burning the fuel, a driven bypass valve provided inside a combustor transition piece disposed at a circumferential position that does not interfere with an obstacle outside the vehicle compartment. The base end portion is connected to the valve stem to be rotated, and the distal end portion protrudes out of the cabin, and is connected to a driving device installed outside the cabin, and is driven and rotated by the driving device to open and close the driving bypass valve. The main drive shaft which constitutes the drive shaft for performing the above is provided.

(3) One end is connected to an adjacent one of the driven shafts, which are provided adjacent to the driven shafts of the driven shaft and the main driving shaft in the vehicle interior, and a spring is interposed at the other end. A link mechanism, comprising a drive lever having a mounting pin and a connecting member connected by a pivot pin, is provided with a link mechanism for changing the pivotal connection between the drive lever and the connecting member according to the rotation of the adjacent main drive shaft. .

(4) Both ends are respectively connected to the connecting members of the respective link mechanisms, projecting out of the vehicle cabin, and rotating the adjacent main drive shaft which is driven and rotated by the driving device. A connecting rod is provided for transmitting and rotating to a driven shaft adapted to be accommodated in the opening and closing, and for opening and closing the driven bypass valve in synchronization with the opening and closing of the driven bypass valve which is opened and closed by the rotation of the adjacent driven shaft. Was.

(A) The bypass valve driving device according to the first aspect of the present invention interferes with obstacles such as a vehicle interior horizontal flange disposed outside the vehicle interior by means of the above (1) to (4). The drive shaft provided inside the combustor transition piece disposed at the circumferential position and for rotating the driven bypass valve, which is difficult to open and close from the outside of the cabin, does not cause the tip to protrude out of the cabin. ,
The driven shaft is designed to be accommodated in the vehicle interior and is rotated by an adjacent main driving shaft provided adjacently, so that the operation of opening and closing the driven bypass valve can be easily performed, and the driven bypass valve is disposed outside the vehicle interior. The fuel supplied to the combustion region is preferably provided in the combustion region provided on the downstream side of the fuel device tailpipe, which is disposed at a position in the vehicle cabin circumferential direction that interferes with an obstacle that is obstructed. It becomes possible to supply air controlled at a flow rate to be burned.

Further, since the driven bypass valve can be opened and closed without projecting the driven shaft for rotating the driven bypass valve out of the vehicle compartment, the structure outside the vehicle compartment is made unique. This eliminates the necessity and eliminates restrictions on the arrangement of a plant including a gas turbine combustor having such a combustor transition piece.

Further, the connecting rod is operated by a link mechanism having a driving lever interposed with a spring, and the driven shaft is rotated by the driving force from the adjacent main driving shaft to control the opening and closing of the driven bypass valve. Vibration is transmitted from the connecting rod, which resonates with the Karman vortex generated on the downstream side by the flow of compressed air flowing outside the combustor transition piece arranged in the vehicle compartment of the gas turbine combustor in the circumferential direction. In particular, it is possible to reduce abrasion of a pivot pin provided in the link mechanism or a connecting portion of the link mechanism with an adjacent main drive shaft and a driven shaft, which increases the wear caused by the vibration.

Further, a bypass valve driving device according to a second aspect of the present invention includes the following means in addition to the above-mentioned means (1) to (4).

(5) At least one of the driven shaft and the adjacent main drive shaft of the drive shafts radially arranged in the radial direction of the casing is deflected from the radial direction so that the periphery of the casing can be deflected. The directions of the driven shaft and the adjacent main driving shaft arranged adjacent to each other in the direction are arranged so as to be parallel.

According to a second aspect of the present invention, there is provided a bypass valve driving device.
In addition to the above-mentioned means (1) to (4), the above-mentioned means (5) provides the above-mentioned means (a) and (b) that the driven shaft and the adjacent main drive shaft are parallel to each other.
The rotation directions of the driven shaft and the adjacent driving shaft are parallel to each other in the same direction, and even if the link mechanism is a single mechanism including a driving lever and a connecting member, the rotation of the driven shaft and the adjacent driving shaft is driven. The device can be easily rotated with a small driving force, the link mechanism can be made simple, and a high reliability can be achieved without generating a large load during rotation.

According to a third aspect of the present invention, there is provided a bypass valve driving device.
The following means are provided in addition to the means (1) to (4) described above.

(6) The connecting rod is connected to the other end of the link mechanism having one end connected to the adjacent main drive shaft, that is, the other end of the connecting member having one end pivotally connected to the drive lever by a pivot pin. From the connected end to the end connected to the other end of the link mechanism, one end of which is connected to the driven shaft, for example, an inclination such that an arc concentric with the circumferential arc surface of the vehicle compartment is formed. A curved portion is provided.

According to a third aspect of the present invention, there is provided a bypass valve driving device.
In addition to the above (a) and (c), the connecting rod is provided with a curved portion by using the above-mentioned means (6) in addition to the above-mentioned means (1) to (4). A curved portion is provided on the connecting rod so that both ends of the connecting rod are located at positions of the driven bypass valve disposed in the circumferential direction of the vehicle cabin and the driven bypass valve that rotates on the adjacent driving shaft. By
Without changing the positions of the driven bypass valve and the driven bypass valve, the driven shaft whose base end is connected to the stem of the driven bypass valve can be made the minimum length, and further, the length of the driven shaft can be reduced. By being able to shorten, the driving force for rotating the driven shaft can be reduced.

Further, a bypass valve driving device according to a fourth aspect of the present invention includes the following means in addition to the above-mentioned means (1) to (4).

(7) The connecting rod has a space formed therein filled with steel balls, and a rib provided on the outer peripheral surface of the connecting rod so as to be inclined from the axial direction of the connecting rod. It was formed of a cylindrical tube made of a cylinder or a square tube.

A bypass valve driving device according to a fourth aspect of the present invention includes:
By means of the above (7) in addition to the above (1) to (4), in addition to the above (a), (d) a steel tube is filled into the inside of a cylindrical tube formed of a cylinder or a square tube. In addition, since the inclined ribs protrude from the outer peripheral surface and are provided, the flow of the compressed air flowing outside the combustor transition piece arranged in the circumferential direction in the cabin of the gas turbine combustor causes The generation of Karman vortices generated on the wake side is reduced, and resonance of the connecting rod due to Karman vortices can be avoided, and even if vibrations occur in the connecting rods due to resonance with Karman vortices, steel balls filled inside The vibration amplitude can be reduced by the frictional force, and the transmission of vibration from the outside to the connecting rod can be reduced.

The fifth aspect of the present invention provides a bypass valve driving apparatus in addition to the above-mentioned means (1) to (4).

(8) The link mechanism is not connected to a drive lever that forms a link mechanism that rotates together with the driven shaft and the adjacent main drive shaft that rotate in accordance with the rotation of the driven shaft and the adjacent main drive shaft, and these shafts are not connected. One end is pivotally attached to a pivot pin provided at the end of the drive lever on the side, and an intermediate joint that freely rotates in a direction perpendicular to the rotational direction of the drive lever, and a pivot pin of the intermediate joint A pivot pin for pivotally connecting a connecting rod adapted to transmit a driving force from an adjacent driving shaft to a driven shaft at the other end, and rotating the connecting rod in a direction perpendicular to the rotating direction of the intermediate joint. It consisted of a link mechanism.

According to a fifth aspect of the present invention, there is provided a bypass valve driving device comprising:
In addition to the above-mentioned means (1) to (4), the above-mentioned means (8) provides the above-mentioned (a) and (e) the use of a double link mechanism for the link mechanism, so that the radial direction of the vehicle compartment can be improved. It is possible to smoothly rotate the driven shaft and the adjacent main driving shaft that drives the driven shaft arranged radially,
Since the opening and closing of the driven bypass valve is opened and closed almost at the same time as the opening and closing of the driven bypass valve driven by the adjacent driven shaft and by the same amount, in other words, in response to the movement of the outer ring provided outside the vehicle compartment, All of the bypass valves provided in a plurality of combustor transition pieces arranged in the circumferential direction in the cabin of the turbine combustor open and close simultaneously and uniformly, so that the downstream side of each combustor transition piece. It is possible to supply air controlled to a flow rate at which fuel supplied to each of the combustion zones provided in the combustion chamber is suitably burned, so that the gas turbine combustor has excellent combustion efficiency and can generate a large driving force. Can be something.

[0033]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a bypass valve driving device according to the present invention will be described below with reference to the drawings. In the drawings, the same or similar members as those shown in FIGS. 5 and 6 are denoted by the same reference numerals, and description thereof will be omitted. FIG. 1 shows a first embodiment of a bypass valve driving device according to the present invention.
It is a side view in arrow EE shown in FIG.6 (a) similarly to (b).

As shown in the figure, 20 pieces of the vehicle interior 010 in the circumferential direction inside the vehicle interior 010 provided with obstacles such as a vehicle interior horizontal flange 013 and a bypass pipe 014 provided outside the vehicle interior 010, A circumferential position of the cabin 010 where a drive shaft 09 for opening and closing the bypass valve 08 interferes near the opening of the combustor transition piece 05 arranged at an equal pitch every 18 ° in the circumferential direction. The driven shaft 21 that constitutes a drive shaft for opening and closing the driven bypass valve 20 of the bypass valve 08 disposed at the upper end of the driven room 21
It has been shortened to fit within.

Further, it is disposed at a circumferential position of the vehicle room 010 which can be rotated by a drive shaft 09 which can protrude to the outside of the vehicle room 010 without interfering with an obstacle provided outside the vehicle room 010. The main drive shaft 24 constituting a drive shaft 09 for opening and closing the main drive bypass valve 22 of the bypass valve 08 is provided with an inner race 011 fixed to the outside of the vehicle interior 010.
The upper end of the outer ring 012 is connected to the side surface of the outer ring 012 via a link device.

Therefore, the driving bypass valve 22 is connected to the inner ring 01.
The opening and closing operation is performed by the main drive shafts 23 and 24 that rotate in response to the movement of the outer ring 012 that moves on the outer peripheral surface of the compressor 1, and the compressed air PA supplied to the combustion area flows into the combustor transition piece 05. The amount of the conventional gas turbine combustor 0 shown in FIGS.
1 can be controlled.

The driven shaft 24 for opening and closing the above-described driven bypass valve 22 has the driven shaft 21 described above.
Is provided at the opening of the combustor transition piece 05 provided adjacent to the combustor transition piece 05 in which the driven bypass valve 20 is disposed. The adjacent main drive shaft 2 for opening and closing the main drive bypass valve 22 to control the flow rate of the compressed air PA into the combustor transition piece 05
3 is provided separately.

The adjacent main driving shaft 23 is connected to the distal end of the driven shaft 21 by a connecting rod 25 at a position inside the vehicle cabin 010, and opens and closes the driving bypass valve 22 in response to the movement of the outer ring 012. In order to open and close the driven bypass valve 20, the driven shaft 2 is connected by a connecting rod 25 via a link mechanism 26.
1 can also be rotated.

FIG. 2 shows the structure of the adjacent main driving shaft 23 and the driven shaft 21.
FIG. 9 is a diagram showing details of a connected state in which the and are connected by a connecting rod 25;
2A is a plan view taken along the line AA shown in FIG. 1, and FIG. 2B is a side view taken along the line BB shown in FIG. 2A. As shown in FIG. 6 (b), the adjacent main driving shaft 23 and the driven shaft 21 which are usually provided radially around the axis of the vehicle interior 010 have an axial direction parallel to each other as shown in FIG. 2 (b). The outer ring 012 is arranged and connected by the connecting rod 25 via the link mechanism 26. As described above, the outer ring 012 is rotated by the link device by the circumferential movement of the cabin 010, and is rotated by the link device to open and close the driving bypass valve 22. The driven shaft 21 is rotated by the rotation of the main driving shaft 23, and the driven bypass valve 20 is opened and closed according to the opening and closing operation of the driven bypass valve 22.

The link mechanism 26 has a front end portion of the driven shaft 21 located inside the vehicle room 010 and a vehicle room 01 of the adjacent main driving shaft 23 penetrating the vehicle room 010 and protruding to the outside of the vehicle room 010.
The link mechanism 26 is provided at a portion located inside the inner drive shaft 0, but for simplicity, only the link mechanism 26 provided on the adjacent driving shaft 23 will be described. That is, exactly the same link mechanism 26 that is provided on the adjacent main drive shaft 23 is provided at the tip of the driven shaft 21.

The link mechanism 26 has a drive lever 27 having a base end fixed to the outer peripheral surface of the adjacent driving shaft 23 with an engagement pin and having a pivot pin hole 30 at the end.
The connection member 31 is formed so as to be pivotally connected with a pivot pin 32 inserted into the pivot pin hole 30. At the tip of the drive lever 27 provided with the pivot pin hole 30, there is provided a spring storage section which is bored in the drive lever 27 in the axial direction and opens into the pivot pin hole 30. The spring 28 is housed in this spring storage section, and the spring 28
The spring receiving seat 29 is provided between the bush and the bush fitted on the pivot portion of the connection member 31 pivotally connected by the pivot pin 32.

A single link mechanism 26 is connected to the adjacent main drive shaft 23 and the driven shaft 21 together with the drive lever 27, and is pivotally connected to the tip of each drive lever 27 by a pivot pin 32. A connecting rod 25 is connected to an end of the connecting member 31 that can be freely deflected from the axial direction, opposite to the pivotal connection portion.
Is transmitted to the driven shaft 21, the driven shaft 21 is rotated in synchronization with the rotation of the adjacent main driving shaft 23, and the driven bypass valve 20 connected to the base end of the driven shaft 21 is opened and closed. Like that.

The connecting rod 25 has an end connected to a link mechanism 26 provided on the adjacent driving shaft 23 and the driven shaft 21.
A curved portion that forms an arc surface concentric with the arc in the circumferential direction of the vehicle interior 010 is formed between the end portion connected to the link mechanism 26 provided in the vehicle compartment 010.

The connecting rod 25 is formed by a cylinder 33 except for both ends connected to the link mechanism 26 as shown in FIG.
A spiral rib 35 inclined from the axial direction of the cylinder 33 is provided so as to protrude from the outer peripheral surface of the cylinder 33.

In the bypass drive device according to the present embodiment, as described above, the driven shaft 21 that drives the driven bypass valve 20 that interferes with an obstacle such as the passenger compartment horizontal flange 013 provided outside the passenger compartment 010 is used. The adjacent main drive shaft 23 which is shortened so as to be accommodated in the vehicle interior 010 and is arranged next to the driven shaft 21 and which does not interfere with an obstacle even when projected outside the vehicle interior 010.
Are connected via a connecting rod 25 as a driving source to drive the driven shaft 2
5 was rotated.

Thus, the driven shaft 2 of the drive shaft 09
1 is a plant in which a gas turbine combustor is provided in which the driven bypass valve 20 can be opened and closed without projecting out of the vehicle compartment 010, and the external shape of the vehicle compartment 010 is not restricted. If the restriction on the layout of the vehicle compartment 010 can be reduced and the external shape of the vehicle compartment 010 is not restricted in the past, the driven bypass valve, which could not be opened and closed during driving, can be opened and closed. The mixing ratio of the fuel F and the compressed air PA in the combustion zone of each combustor transition piece 05 arranged in the circumferential direction inside the fuel cell can be made uniform so that suitable combustion can be performed, and the combustion efficiency can be increased. The output of the whole plant can be improved.

The drive shaft 09 for opening and closing the bypass valve 08 is provided radially because the combustor transition piece 05 is circumferentially arranged in the vehicle interior 010, but in this embodiment. Then, by deflecting only the driven shaft 21 so as to be parallel to the adjacent main driving shaft 23 arranged adjacently,
A parallel surface in which the rotation direction of the driven shaft 21 is the same as the rotation direction of the adjacent driven shaft 23 can be used. That is, the link mechanism 26 can be formed as a single unit composed of the drive lever 27 and the connection member 31, and can be made highly reliable with a simple configuration.

Further, by providing the connecting rod 25 with a curved portion, the driven shaft 25 can be made the minimum length without changing the position of the driven bypass valve 22 or the driven bypass valve.
Combined with making the driven shaft 21 and the adjacent main driving shaft 23 parallel to the axial center direction, the adjacent main driving shaft 23 for rotating the driven shaft 25
Can be minimized.

Since the link mechanism 26 for driving the driven bypass valve 20 is an internal link mechanism accommodated in the vehicle interior 010, the driven mechanism can be driven irrespective of the structural limitation outside the vehicle interior 010. The opening and closing operation of the bypass valve 20 can be performed smoothly. Since the link mechanism 26 provided inside the vehicle compartment 010 is used in a rotary machine such as a gas turbine, friction and damage due to vibration are feared, and further, the flow rate of the compressed air PA flowing around 50 m /
Since the connecting rod 25 is exposed to an airflow at a speed of about s, resonance with the Karman vortex may be a problem.

Therefore, the drive lever 27 of the link mechanism 26
The spring is installed in the inside, and the connecting member 3 is passed through the spring receiving seat 29.
By pressing the bush fitted on the first pivot portion, it is possible to prevent vibration and wear of the link mechanism 26. Further, a rib 35 is wound around the connecting rod 25 to prevent resonance with the Karman vortex, thereby preventing the occurrence of the Karman vortex. It is possible to take measures to avoid resonance and to prevent vibration transmitted from the outside.

Next, FIG. 4 is a view showing a second embodiment of the bypass valve driving device according to the present invention, and FIG.
4A is a view showing details of a connection state in which the driving shaft 21 and the driven shaft 21 are connected by a connection rod 25. FIG. 4A is a plan view taken along the line AA shown in FIG. 1, and FIG. 4) is a sectional view taken along line DD shown in FIG.

As shown in the figure, similarly to the first embodiment, also in the present embodiment, the circumferential direction of the casing 010 where the drive shaft 09 for opening and closing the casing horizontal flange 13 and the bypass valve 08 interferes. When the driven bypass valve 20 disposed at the position is driven, the driven shaft 21 that opens and closes the driven bypass valve 20 is shortened so as to be accommodated in the vehicle compartment 010 and the driven shaft 21 does not interfere with the adjacent vehicle compartment horizontal flange 13. It is connected via a connecting rod 25 to an adjacent main drive shaft 23 that opens and closes the driven bypass valve 22 disposed in the directional position, and allows the driven bypass valve 20 to be opened and closed.

The adjacent driving shaft 23 and the connecting rod 25 are
The drive lever 27 is connected via an intermediate joint 36. Further, the driven shaft 21 and the connecting rod 25 are similarly connected to the intermediate joint 36 via the drive side lever 25. Here, the drive lever 25 and the intermediate joint 36 are connected by the pivot pin 32,
Then, the intermediate joint 36 and the connecting rod 25 are connected by a rotating pin 37, respectively.

Further, as shown in the first embodiment for the purpose of reducing vibration and wear, a spring 28 is inserted into a spring accommodating section opened in a pivot pin hole 30 provided in the drive lever 27, and a spring receiving seat is provided. 29 is pushed in the direction of the pivot pin 32 and is pushed into the intermediate joint 36, and in the present embodiment, a spring 38 is also inserted into the pivot portion between the intermediate joint 36 and the connecting rod 25, and the intermediate joint 36 is Is pushed in.

As described above, the link mechanism 40 having the internal double link mechanism is installed at a position where the connecting rod 25 is installed at a place where a turbulent airflow having a flow velocity of about 50 m / s flows, and the Karman vortex. In order to avoid resonance with the Karman vortex, the connecting rod 2
5 also includes a cylinder 33 having a structure in which ribs 35 are provided on the entire circumference and steel balls 34 are packed inside as shown in FIG. 3, similarly to the connecting rod 25 in the first embodiment. Has become.

In the bypass drive device of the present embodiment, similarly to the above-described first embodiment, the driven bypass valve 20 which interferes with an obstacle such as the vehicle interior horizontal flange 013 provided outside the vehicle interior 010 is driven. The driven shaft 21 to be driven is shortened so as to be accommodated in the vehicle interior 010, and the adjacent driven shaft 23 which does not cause an interference is coupled via a connecting rod 25 to drive the driven shaft 25. I did it.

As a result, it is possible to minimize the restrictions on the external shape of the vehicle interior 010 and to reduce the restrictions on the arrangement of the plant in which the gas turbine combustor is provided. The valve can be opened and closed, and the combustion ratio of the fuel F and the compressed air PA in the combustion region of each combustor transition piece 05 disposed in the interior of the vehicle interior 010 in the circumferential direction can be suitably combusted. The power can be made uniform, the combustion efficiency can be increased, and the output of the entire plant can be improved.

Further, in the present embodiment, the drive shaft 09 for opening and closing the bypass valve 08 extends radially because the combustor transition piece 05 is arranged on the circumference in the vehicle interior 010. Accordingly, the rotational motion about the adjacent main drive shaft 23 is transmitted to the driven shaft 21 by the link mechanism 26 including the drive lever 27 having a base end fixed to the adjacent main drive shaft 23 and the driven shaft 21 and the intermediate joint 36, The circumferential rotation of the casing 010 is covered by another link mechanism constituted by a pivot pin 37 for pivotally connecting the intermediate joint 36 and the connecting rod 25.

With such an internal double link mechanism, the drive shaft composed of the driven shaft 21, the main drive shaft 24 and the adjacent main drive shaft 23, which are installed radially, regardless of the structural restrictions outside the vehicle compartment 06. 09 can be driven smoothly. Further, since all the bypass valves 08 can be opened and closed in the same direction, the driven bypass valve 20 driven by the driven shaft 21 is the same as the driven bypass valve 22 driven by the adjacent driven shaft 23 and the driven shaft 24. The air flow can be supplied into the combustor transition piece 07, and the mixing ratio between the fuel F and the compressed air PA in the combustion zone of each combustor transition piece 05 circumferentially disposed inside the vehicle interior 010 can be adjusted. The combustion efficiency can be increased, the combustion efficiency can be increased, and the output of the entire plant can be improved.

[0060]

As described above, according to the bypass valve driving device of the present invention, the bypass valve driving device is disposed at a circumferential position where it interferes with an obstacle such as a vehicle interior horizontal flange disposed outside the vehicle interior. The base end portion is connected to a valve stem for rotating the driven bypass valve, which is provided inside the combustor transition piece, and is fitted in the vehicle interior. A driven shaft that constitutes a drive shaft that performs opening and closing control, a combustor tail tube provided with a driven bypass valve, and inside a combustor tail tube arranged at a circumferential position that does not interfere with obstacles outside the vehicle compartment. The base end is connected to a valve stem that rotates the driven bypass valve, the distal end protrudes out of the cabin, and is connected to a driving device installed outside the cabin, and is driven and rotated by the driving device. The main part of the drive shaft that operates to open and close the drive bypass valve Axle, one end is connected to an adjacent main drive shaft provided adjacent to the driven shaft among the driven shaft and the main drive shaft inside the cabin, and a pivot pin having a spring interposed at the other end is provided. A link mechanism comprising a drive lever provided to be provided and a connecting member connected by a pivot pin, wherein the link mechanism varies the angle between the adjacent main drive shaft and the driven shaft in accordance with the rotation of the adjacent main drive shaft. The rotation of an adjacent main drive shaft, which is fixed to a connecting member pivotally connected by a pin and is driven and rotated by a driving device, is transmitted to a driven shaft to be rotated, synchronized with the main drive bypass valve, and is driven by a driven bypass valve. And a connecting rod that opens and closes.

Thus, the driven bypass valve can be easily rotated, and the downstream side of the combustor transition piece disposed at a position in the circumferential direction of the vehicle cabin that interferes with an obstacle provided outside the vehicle cabin. Also in the provided combustion zone, similarly to the driven bypass valve, air can be supplied at a flow rate controlled to suitably burn the fuel supplied to the combustion zone.

Further, it is not necessary to make the structure outside the cabin a peculiar shape, and it is possible to eliminate the restriction on the arrangement of the plant including the gas turbine combustor provided with the combustor transition piece. it can. In addition, a link in which vibration is transmitted from a connecting rod that resonates with Karman vortices generated on the downstream side by the flow of compressed air flowing outside the combustor transition piece disposed in the vehicle compartment of the gas turbine combustor in the circumferential direction. Vibration of the mechanism is reduced, and in particular, abrasion of a pivot pin for pivotally connecting a connecting rod, which is increased in wear due to generation of vibration, or a coupling portion between the adjacent driving shaft and driven shaft can be reduced.

Further, the bypass valve drive device of the present invention deflects at least one of the driven shaft and the adjacent main drive shaft among the drive shafts radially arranged in the vehicle compartment, The driven shaft and the adjacent driving shaft radially arranged around the axis of the vehicle cabin are arranged so as to be parallel to each other.

Thus, even if the link mechanism is a single mechanism, the rotation of the driven shaft and the adjacent main drive shaft can be easily rotated with a small driving force of the driving device, so that the link mechanism can be simplified in structure and furthermore, the rotation can be simplified. High reliability can be obtained without occasionally generating a large load.

Further, in the bypass valve driving device of the present invention, the connecting rod is driven from the end pivotally connected by the pivot pin provided at the other end of the link mechanism having one end connected to the adjacent main drive shaft. A curved portion that is inclined toward the center side of the vehicle compartment is provided to an end portion pivotally attached by a pivot pin provided at the other end portion of the link mechanism having one end portion connected to the shaft.

Thus, since the connecting rod is provided with a curved portion inclined toward the center side of the vehicle compartment, the driven bypass valve disposed in the circumferential direction of the vehicle compartment and the main bypass which rotates with the adjacent driving shaft. Without changing the position of the valve, the length of the driven shaft whose base end is connected to the stem of the driven bypass valve can be minimized, and the length of the driven shaft can be shortened. Can be reduced.

Further, in the bypass valve driving device of the present invention, the connecting rod is formed so as to fill the space with a steel ball, and the outer peripheral surface is provided with a rib projecting from the axial direction of the connecting rod. In addition, it is formed of a cylindrical tube formed of a cylinder or a square tube.

As a result, due to the flow of the compressed air flowing outside the combustor transition piece arranged in the circumferential direction in the cabin of the gas turbine combustor, the generation of vibration due to the Karman vortex generated on the downstream side of the connecting rod is generated. Can reduce the resonance of the connecting rod due to Karman vortex.Also, even if vibration occurs in the connecting rod due to resonance with Karman vortex, the amplitude can be reduced by the frictional force of the steel ball filled inside, The transmission of vibration from the shaft to the connecting rod can be avoided.

In the bypass valve driving device according to the present invention, the link mechanism rotates in a direction orthogonal to the axis of these driven shafts and the adjacent main driving shafts, which form the driving shaft, in accordance with the rotation of these shafts. One end is pivotally connected to a drive lever that constitutes a link mechanism and a pivot pin provided at an end of the drive lever that is not connected to these shafts, and is freely movable in a direction orthogonal to a rotation surface of the drive lever. And a connecting rod configured to transmit driving force from an adjacent drive shaft to a driven shaft at the other end of the intermediate joint that is not a pivot pin. And a double link mechanism comprising a rotation pin for rotating in a direction perpendicular to the direction.

[0070] This makes it possible to smoothly rotate the driven shaft radially arranged in the vehicle compartment and the adjacent main driving shaft for driving the driven shaft. In particular, the opening and closing of the driven bypass valve is driven by the adjacent main driving shaft. All the bypass valves provided in the plurality of combustor transition pieces arranged in the circumferential direction in the cabin of the gas turbine combustor are opened and closed almost simultaneously with the opening and closing of the driven bypass valve. However, it is possible to supply air that opens and closes simultaneously and uniformly, and that can control the flow rate for suitably burning the fuel supplied to each combustion zone provided on the downstream side of each combustor transition piece. The combustor can have excellent combustion efficiency and can generate a large driving force.

[Brief description of the drawings]

FIG. 1 is a side view showing a first embodiment of a bypass valve driving device according to the present invention, taken along a line EE shown in FIG. 6A;

2A and 2B are diagrams showing details of a connected state in which an adjacent main driving shaft and a driven shaft are connected by a connecting rod 25. FIG. 2A is a plan view taken along the line AA shown in FIG. ) Is a side view taken along the line BB shown in FIG.

FIG. 3 is a view showing details of a connecting rod shown in FIG. 2;
(A) is a partial side view partially showing a broken surface, FIG. 3 (b) is a cross-sectional view taken along the line CC shown in FIG. 3 (a),

FIG. 4 is a view showing a second embodiment of the bypass valve driving device of the present invention, and is a detailed view of a connected state in which an adjacent drive shaft and a driven shaft are connected by a connecting rod, and FIG. 4 (a) is FIG. View A-
4A is a plan view, FIG. 4B is a cross-sectional view taken along a line DD shown in FIG.

FIG. 5 is a sectional view showing a part of the gas turbine combustor;

6 is a diagram showing a conventional bypass valve driving device, and FIG.
FIG. 6A is a partial view showing the opening / closing mechanism of the bypass valve shown in FIG. 5, and FIG. 6B is a side view taken along the line EE shown in FIG. 6A.

[Explanation of symbols]

 01 Gas turbine combustor 02 Combustor inner cylinder 03 Fuel nozzle 04 Compressor 05 Combustor transition piece 06 Stator blade 07 Moving blade 08 Bypass valve 09 Drive shaft 010 Cabin 011 Inner ring 012 Outer ring 013 Cabin horizontal flange 014 Bypass pipe 20 Follower Bypass valve 21 driven shaft 22 driven bypass valve 23 adjacent driven shaft 24 driven shaft 25 connecting rod 26 link mechanism 27 drive lever 28, 38 spring 29, 39 spring receiving seat 30 pivoted pin hole 31 connecting member 32 pivoted pin 33 cylinder 34 Steel ball 35 Rib 36 Intermediate joint 37 Rotating pin F Fuel PA Compressed air CG Combustion gas

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Atsushi Kubota 2-1-1 Shinama, Arai-machi, Takasago City, Hyogo Prefecture Inside the Takasago Research Laboratory, Mitsubishi Heavy Industries, Ltd. No. 1 Inside the Mitsubishi Heavy Industries, Ltd. Takasago Research Laboratory

Claims (5)

[Claims] 1. A bypass valve provided in each of a plurality of combustor transition pieces arranged in a circumferential direction in a vehicle cabin of a gas turbine combustor, a base end portion is connected to the bypass valve, and a tip end portion is connected to the bypass valve. A bypass valve that is opened and closed by a drive shaft protruding out of the vehicle compartment and connected to a drive device to control an air flow rate for suitably burning fuel supplied to a combustion area on a downstream side of the combustor transition piece. In the driving device, a base end is connected to a driven bypass valve disposed at a circumferential position of the bypass valve that interferes with an obstacle disposed outside the vehicle compartment, and a distal end is connected to the vehicle compartment. A driven shaft housed in the inside of the base valve, and a base end portion is connected to a driven bypass valve of the bypass valves disposed adjacent to the driven bypass valve at a circumferential position that does not interfere with the obstacle, Part protrudes out of the cabin to the drive unit A drive shaft having a main drive shaft connected thereto, and a drive lever having one end fixed to an adjacent main drive shaft which is disposed adjacent to the driven shaft among the driven shaft and the main drive shaft inside the cabin. A link member having one end pivotally connected to the other end of the drive lever interposed with a spring, and a link mechanism for relatively moving the connection member and the drive lever in accordance with the rotation of the drive shaft. The other end of the connecting member is coupled to the other end thereof, and the rotation of the adjacent driving shaft driven by the driving device is transmitted to the driven shaft to rotate the driven shaft, and the driving bypass is provided. A bypass rod for rotating and opening and closing the driven bypass valve in synchronization with opening and closing of the valve. 2. The bypass valve driving device according to claim 1, wherein the driven shaft and the adjacent main driving shaft are arranged in parallel, and are connected to the driven bypass valve and the main driving bypass valve, respectively. 3. The connecting rod is characterized in that a curved portion having an inclination is provided midway between an end portion connected to the adjacent main driving shaft and an end portion connected to the driven shaft. The bypass valve driving device according to claim 1, wherein 4. The connecting rod is formed of a cylindrical tube which is filled with steel balls and has ribs protruding from an outer peripheral surface of the connecting rod so as to be inclined with respect to the axial direction. The bypass valve driving device according to claim 1, wherein 5. An intermediate joint, wherein the link mechanism has one end pivotally connected to the other end of the drive lever with a pivot pin, and moves relative to the drive lever in response to the rotation of the drive shaft;
The connecting rod is pivotally attached to the other end of the intermediate joint, and a rotating pin for rotating the connecting rod in a direction orthogonal to the moving direction of the intermediate joint is provided as a double link mechanism. The bypass valve driving device according to claim 1, wherein