JP4222962B2 - Burner device and gas turbine engine - Google Patents

Description

The present invention includes a first combustion flow path and a second combustion flow path for supplying an air-fuel mixture formed by supplying a fuel gas to an oxygen-containing gas flowing therein to the combustion section and burning it.
A plurality of distribution mechanisms for distributing and supplying fuel gas to the first combustion channel and the second combustion channel;
The distribution mechanism has a first supply port that opens into the first combustion channel and ejects fuel gas in a direction that intersects the flow direction of the oxygen-containing gas in the first combustion channel; and the first combustion A receiving port that opens in the flow path facing the fuel gas ejection direction of the first supply port is formed on one end side, and a second supply port that opens in the second combustion flow path is formed on the other end side A part of the fuel gas ejected from the first supply port when the total supply amount is equal to or greater than a predetermined reception start supply amount, and is configured to be received by the reception port.
The plurality of distribution mechanisms include a near-side distribution mechanism in which the second supply port is disposed closer to the first combustion flow path, and the second supply port than the near-side distribution mechanism. The present invention relates to a burner device including a far-side distribution mechanism disposed on a side far from a combustion channel, and a gas turbine engine including the burner device.

  The burner apparatus as described above is used not only as a burner apparatus for a gas turbine engine used in a cogeneration system or the like, but also as an incinerator burner apparatus. In addition, the burner device configured in this manner is configured so that the combustion in the combustion section is maintained in order to maintain the proper equivalence ratio of the respective air-fuel mixtures supplied from the respective combustion flow paths to the combustion section. The amount of fuel gas supplied to the pilot combustion channel configured as the first combustion channel and the main combustion channel configured as the second combustion channel is adjusted in accordance with the increase or decrease of the load. In addition, it is necessary to adjust the flow rate of air (an example of an oxygen-containing gas) supplied to each combustion channel.

  The fuel gas distribution and supply to the pilot combustion channel and the main combustion channel based on the combustion load, etc., and the adjustment of the distribution ratio can be easily performed, and with the decrease in the total fuel gas supply to the burner unit A burner device that can increase the distribution ratio of the supply amount to the pilot combustion channel has been proposed (see, for example, Patent Documents 1 and 2).

  The burner devices described in Patent Documents 1 and 2 reduce the total supply amount of the fuel gas as the combustion load decreases with respect to the rated combustion load, but the total supply amount decreases as the total supply amount decreases. A distribution mechanism that distributes and supplies fuel gas to the pilot combustion channel and main combustion channel to maintain a stable pilot combustion so that the ratio of the supply amount to the pilot combustion channel can be increased. can do.

  That is, as shown in FIG. 9, this burner device is a pilot combustion flow path 141 for performing pilot combustion in the combustion section 145, and premixed lean combustion in the combustion section 145 surrounding the periphery in a cylindrical shape. A main combustion channel 142 for performing main combustion, and further for distributing and supplying the fuel gas G supplied to the fuel channel 143 to the pilot combustion channel 141 and the main combustion channel 142 The distribution mechanism 100 is provided.

The distribution mechanism 100 includes a first supply port 101 that supplies the fuel gas G in a direction that intersects the flow direction of the air A in the pilot combustion flow channel 142, and the first supply port 101 to the pilot combustion flow channel 142. The inlet 102 that opens in the direction opposite to the jet direction of the fuel gas G is formed on one end side, and the second supply port 103 that opens on the main combustion channel 142 is formed on the other end side. Yes.
That is, in the distribution mechanism 100, a slit-shaped opening 106 that is opened to the pilot combustion flow path 141 is formed between the first supply port 101 and the receiving port 102, and the supply path 104 is defined as the first supply path 104. When the total supply amount of the fuel gas G to the supply port increases to a predetermined reception start supply amount or more, a part of the fuel gas G ejected from the first supply port 101 to the opening 106 is supplied to the reception port 102. The received fuel gas can be supplied to the main combustion channel 142 from the second supply port 103.

  Therefore, this burner device can realize a good combustion state in the entire combustion load range while adjusting the total supply amount of the fuel gas G and adjusting the combustion load in a wide range by the distribution mechanism 100.

  That is, in order to perform a low combustion load operation in which only pilot combustion is performed, the fuel gas G ejected from the first supply port 101 is not received by the receiving port 102, and the fuel gas G is only fed to the pilot combustion channel 141. In order to be supplied, the total supply amount of the fuel gas G is reduced to less than the reception start supply amount in the distribution mechanism. In such a low combustion load operation, since no excessive lean air-fuel mixture is formed in the main combustion flow path 142, generation of unburned components can be suppressed.

  On the other hand, in order to perform a high combustion load operation in which both main combustion and pilot combustion are performed, the fuel gas G ejected from the first supply port 101 is received by the receiving port 102, and the main combustion channel 142 is also fueled. In order to supply the gas G, the total supply amount of the fuel gas G is increased more than the reception start supply amount in the distribution mechanism. In such a high combustion load operation, the larger the total supply amount of the fuel gas G, the larger the distribution ratio of the supply amount of the fuel gas G to the main combustion flow path 142 with respect to the total supply amount. In addition, the smaller the total supply amount of the fuel gas G, the smaller the distribution ratio of the fuel gas G to the main combustion channel 142. That is, when the combustion load is relatively low in the high combustion load operation, the distribution ratio of the fuel gas G to the pilot combustion flow path 141 is relatively increased to stabilize the pilot combustion, but the high combustion load When the combustion load is relatively high during operation, the fuel gas G can be supplied uniformly throughout the combustion channels 141 and 142 to achieve low NOx combustion using a lean premixed gas.

  Further, the burner device is provided with a plurality of distribution mechanisms 100, and each of the second supply ports 103 in the plurality of distribution mechanisms 100 extends from the side closer to the pilot combustion flow path 141 to the side farther away, in other words, The main combustion channel 142 is distributed in the cylindrical radial direction. The fuel gas G can be uniformly supplied to the main combustion flow path 142 by distributing the second supply ports 103 in the main combustion flow path 102 in this manner.

International Publication Number WO 01/44720 A1 International Publication Number WO 02/073091 A1

  However, as described above, a plurality of distribution mechanisms are provided, and the plurality of second supply ports are close to the first combustion channel (pilot combustion channel) in the second combustion channel (main combustion channel). In the burner device distributed and arranged from the side far from the side, the acceptance start supply amount in all the distribution mechanisms is set equal, so the total supply amount of fuel gas is the acceptance start supply amount in all the distribution mechanisms When the high combustion load operation is performed by increasing the above, even when the combustion load is relatively low, the fuel gas is uniformly supplied to the main combustion flow path and formed in the main combustion flow path. There is a problem that the equivalent ratio of the air-fuel mixture becomes too small to ensure a stable combustion state. In particular, in the main combustion channel, the fuel gas supplied from the second supply port that is relatively far from the pilot combustion channel is difficult to be ignited by pilot combustion, and thus is discharged without being burned as an unburned component. In some cases, the exhaust gas properties deteriorate and the efficiency decreases.

  The present invention has been made in view of the above-described problems, and its object is to perform main combustion while supplying fuel gas to a first combustion channel as a pilot combustion channel and performing stable pilot combustion. In the case where main combustion is performed by supplying fuel gas to the second combustion flow channel as the flow channel, the generation of unburned components in the second combustion flow channel is suppressed, and good exhaust gas properties and high efficiency are achieved. It is in providing a burner device to be realized.

In order to achieve the above object, a burner device according to the present invention includes a first combustion channel for supplying an air-fuel mixture formed by supplying a fuel gas to an oxygen-containing gas flowing therein and burning the mixture. A second combustion channel,
A plurality of distribution mechanisms for distributing and supplying fuel gas to the first combustion channel and the second combustion channel;
The distribution mechanism has a first supply port that opens into the first combustion channel and ejects fuel gas in a direction that intersects the flow direction of the oxygen-containing gas in the first combustion channel; and the first combustion A receiving port that opens in the flow path facing the fuel gas ejection direction of the first supply port is formed on one end side, and a second supply port that opens in the second combustion flow path is formed on the other end side A part of the fuel gas ejected from the first supply port when the total supply amount is equal to or greater than a predetermined reception start supply amount, and is configured to be received by the reception port.
The plurality of distribution mechanisms include a near-side distribution mechanism in which the second supply port is disposed closer to the first combustion flow path, and the second supply port than the near-side distribution mechanism. A burner device comprising a far side distribution mechanism disposed on the far side from the combustion flow path,
The first supply port of each distribution mechanism is provided at a different position in the flow direction of the oxygen-containing gas;
Supply in which the arrangement state of the first supply port and the receiving port in each of the distribution mechanisms sets the reception start supply amount in the far side distribution mechanism to be larger than the reception start supply amount in the near side distribution mechanism have a quantity set structure,
The supply amount setting structure is a structure in which a separation distance between the first supply port and the receiving port in the far side distribution mechanism is set larger than the separation distance in the near side distribution mechanism .

  According to the first characteristic configuration, the plurality of distribution mechanisms are provided, and the plurality of second supply ports are distributed and arranged in the second combustion channel from the side closer to the first combustion channel to the side farther from the first combustion channel. In the burner device, the arrangement state of the first supply port and the reception port in each distribution mechanism has the above-described supply amount setting structure, so that the total supply amount of the fuel gas is greater than the reception start supply amount of the near-side distribution mechanism and far away. In the middle combustion load operation that is set to be less than the reception start supply amount of the side distribution mechanism, the second distribution mechanism on the side closer to the second combustion channel from the first combustion channel that secures stable combustion is used. The fuel gas can be supplied only from the two supply ports, and the fuel gas supplied to the second combustion channel can be favorably ignited and burned by the combustion in the first combustion channel.

  That is, the direction in which the first supply port and the receiving port in each distribution mechanism face each other so that the receiving start supply amount in each distribution mechanism increases as the second supply port becomes farther from the first combustion flow path. In the middle combustion load operation, the fuel gas is received at the receiving port of the near side distribution mechanism, but the fuel gas is received at the receiving port of the far side distribution mechanism. It becomes impossible. Therefore, the fuel gas can be concentrated on the second combustion channel from only the second supply port of the near side distribution mechanism to the side closer to the first combustion channel.

On the other hand, in the high combustion load operation in which the total supply amount of the fuel gas is set to be greater than or equal to the reception start supply amount of the far side distribution mechanism, in addition to the second supply port of the near side distribution mechanism, the second combustion channel is added. Further, the fuel gas is also supplied from the second supply port of the far side distribution mechanism, and the fuel gas G is supplied uniformly throughout the second combustion flow path, so that the low NOx combustion by the lean premixed gas can be realized.
Further, in the first combustion channel, the flow of the oxygen-containing gas is directed to the downstream side of the first combustion channel with respect to the flow of the fuel gas from the first supply port toward the receiving port. To give you the power to Then, the separation distance between the first supply port and the receiving port in each distribution mechanism is set to be larger as the second supply port is farther from the first combustion flow path, so that the oxygen-containing gas in the far-side distribution mechanism is increased. By setting the force of the flow to the flow of the fuel gas larger than that of the near side distribution mechanism, the fuel gas ejected from the first supply port in the far side distribution mechanism is difficult to be received by the reception port, thereby setting the supply amount. The structure can be realized, and the reception start supply amount of the far side distribution mechanism can be made larger than the reception start supply amount of the near side distribution mechanism.

  Therefore, the burner apparatus which suppresses generation | occurrence | production of the unburned component in the 2nd combustion flow path, and implement | achieves favorable exhaust gas property and high efficiency by the said 1st characteristic structure is realizable.

The second characteristic feature of the burner apparatus of the present invention, in addition to the first feature configuration along said wall portion of the second close to the combustion flow path of the first combustion flow path side combustion portion In this respect, a first induction wall is provided for guiding the air-fuel mixture flowing out to the first combustion flow path side.

According to the second characteristic configuration, by providing the first guide wall, in the middle combustion load operation, the second combustion channel is closer to the first combustion channel that ensures stable combustion. When the fuel gas is supplied only from the second supply port of the near-side distribution mechanism on the side, the air-fuel mixture formed by the fuel gas supplied to the second combustion channel is supplied from the first combustion channel. Although it flows out to the combustion part along the wall part on the near side, the air-fuel mixture is guided to the first combustion channel side where relatively stable combustion is performed by the first induction wall and reliably burned. Therefore, the generation of unburned components can be further suppressed.

The third characteristic feature of the burner apparatus of the present invention, in addition to the first feature structure, the the second combustion flow path, the downstream side of the plurality of second supply ports, the first combustion stream It is in the point provided with the partition wall which divides | segments into the near side flow path near the path and the far side flow path far from the first combustion flow path.

According to the third characteristic configuration, by providing the partition wall, in the middle combustion load operation, the second combustion channel is closer to the first combustion channel that ensures stable combustion than the second combustion channel. In the case where fuel gas is supplied only from the second supply port of the near side distribution mechanism, the fuel gas supplied from the second supply port of the near side distribution mechanism to the near side flow channel is the first combustion flow channel. Diffusion to the far side, that is, the far side flow path side, and the relatively stable combustion on the first combustion flow path side allows the fuel gas to be reliably burned. Generation of components can be suppressed.

According to a fourth characteristic configuration of the burner device of the present invention, in addition to the third characteristic configuration described above, an air-fuel mixture that has flowed out downstream of the partition wall along the partition wall in the far-side flow path, The second guide wall is provided with a second guide wall that guides the combustion channel.

According to the fourth feature configuration, by providing the second guide wall, the total supply amount of the fuel gas is increased, and in the second combustion channel, the fuel gas starts to be supplied to the far-side channel and the high combustion is performed. At the time when the load operation is started, the air-fuel mixture formed by the fuel gas supplied to the far-side flow channel flows out to the combustion section along the partition wall. Since it can be surely burned by relatively stable combustion in the first combustion flow path side, even when the total supply amount of fuel gas is increased, more unburned components can be generated. Can be suppressed.

According to a fifth characteristic configuration of the burner device of the present invention, in addition to any one of the first to fourth characteristic configurations, the first supply port in each of the distribution mechanisms is the first combustion channel. The oxygen-containing gas is arranged so as not to be heavy when viewed in the flow direction of the oxygen-containing gas.

According to the fifth characterizing feature, the first supply port in each of the distribution mechanism, that in the flow direction when viewed in the oxygen-containing gas in the first combustion flow path, arranged without overlap with Rukoto each other, the first In the combustion channel, the oxygen-containing gas stably passes through the open portion formed between the first supply port and the receiving port of each distribution mechanism without obstructing the open portions of the other distribution mechanisms. Will do. Therefore, in each distribution mechanism, the reception start supply amount that is the total supply amount when a part of the fuel gas ejected from the first supply port is received by the reception port is stabilized, and in the above-described supply amount setting structure, In a stable state, the reception start supply amount in the far side distribution mechanism can be set larger than the reception start supply amount in the near side distribution mechanism, and good exhaust gas properties and high efficiency can be stably realized.

In order to achieve the above object, the gas turbine engine according to the present invention is characterized by comprising the burner device having any one of the first to fifth characteristic configurations, and the combustion exhaust gas discharged from the combustion section of the burner device. The point is that the turbine is rotated by kinetic energy.

  According to the gas turbine engine having the above-described characteristic configuration, since the burner device described so far is provided, it is possible to operate in a wide operating load range while realizing good exhaust gas properties and high efficiency.

A first embodiment of the present invention will be described below.
The gas turbine engine shown in FIG. 1 is configured to rotate the turbine 62 by the kinetic energy of the combustion exhaust gas discharged from the combustion unit 45 of the burner device 60, and further uses a part of the rotational power of the turbine 62. A compressor 61 for pushing air A (an example of an oxygen-containing gas) into the burner device 60 is provided.

The burner device 60 also defines the fuel cylinder 1 that defines the fuel flow path 43 and the pilot combustion flow path 41 (an example of the first combustion flow path) that surrounds the fuel cylinder 1 with reference to FIG. The inner cylinder 2 and the outer cylinder 3 that defines a main combustion flow path 42 (an example of a second combustion flow path) that surrounds the inner cylinder 2 are provided coaxially.
The pilot combustion channel 41 and the main combustion channel 42 are supplied with the air A supplied by the compressor 61, and the fuel gas G is distributed and supplied by distribution mechanisms 50a and 50b, which will be described later. The air-fuel mixture formed in the combustion channel 41 and the main combustion channel 42 flows out to the combustion unit 45 and is combusted.

  The pilot combustion channel 41 and the main combustion channel 42 are arranged concentrically so as to be adjacent to each other in the combustion unit 45. The pilot combustion channel 41 and the main combustion channel 42 do not need to be arranged concentrically in parallel as long as they are adjacent at least in the combustion part 45.

The fuel flow path 43 is supplied with fuel gas G from a gas supply source (not shown) that stores the fuel gas G via a conduit (not shown).
A plurality of distribution mechanisms 50 a and 50 b that distribute and supply the fuel gas G in the fuel flow path 43 to the pilot combustion flow path 41 and the main combustion flow path 42 are provided.

  Distribution mechanism 50a, 50b is also a 1st supply port which is arrange | positioned at the pilot combustion flow path 41 and supplies fuel gas in the direction which cross | intersects the distribution direction of the air A in the pilot combustion flow path 41 with reference also to FIG. 31a, 31b and a second supply port disposed in the main combustion flow path 42 with receiving ports 32a, 32b disposed on one end side so as to face and separate from the first supply ports 31a, 31b Supply paths 33a and 33b having 34a and 34b formed on the other end side are configured. In addition, a slit-like opening 7 that opens to the pilot combustion channel 41 is formed between the first supply ports 31a and 31b and the receiving ports 32a and 32b.

  The supply paths 33a and 33b are used when the total supply amount of the fuel gas G to the first supply ports 31a and 31b increases beyond a predetermined reception start supply amount set for each of the distribution mechanisms 50a and 50b. Part of the fuel gas G ejected from the first supply ports 31a and 31b to the opening 7 is received by the reception ports 32a and 32b, and the received fuel gas is used for main combustion from the second supply ports 34a and 34b. The flow path 42 can be supplied.

The first supply ports 31 a and 31 b are formed in the first supply member 4 protruding from the outer periphery of the fuel cylinder 1 toward the pilot combustion flow path 41, and the supply paths 33 a and 33 b are connected to the inner cylinder 2. It is formed in the second supply member 5 protruding to the main combustion flow path 42 side.
Further, as shown in FIG. 2, the first supply member 4 and the second supply member 5 are thin in the circumferential direction of the fuel cylinder 1 and the inner cylinder 2 and have wing shapes extending along the flow direction of the air A. The first supply member 4 and the second supply member 5 are arranged at eight equal intervals in the circumferential direction.

  The plurality of distribution mechanisms 50a and 50b include a near-side distribution mechanism 50a in which the second supply port 34a is disposed closer to the pilot combustion channel 41, and a second supply port 34b than the near-side distribution mechanism 50a. And a far-side distribution mechanism 50b disposed on the far side from the pilot combustion channel 41. That is, each of the second supply ports 34a and 34b of the plurality of distribution mechanisms 50a and 50b extends from the side closer to the pilot combustion channel 41 to the side far from the pilot combustion channel 41, in other words, the cylindrical shape of the main combustion channel 42. In the radial direction, they are distributed.

  In the burner device 60 configured as described above, the arrangement state of the first supply ports 31a and 31b and the receiving ports 32a and 32b in the respective distribution mechanisms 50a and 50b is the above-described reception in the far-side distribution mechanism 50b. It is configured to have a supply amount setting structure in which the start supply amount Y is set larger than the reception start supply amount X in the near side distribution mechanism 50a.

Specifically, in the supply amount setting structure, the separation distance between the first supply port 31b and the receiving port 32b in the far side distribution mechanism 50b is the separation distance between the first supply port 31a and the receiving port 32a in the near side distribution mechanism 50a. The structure is set larger than that.
That is, since the fuel gas G ejected from the first supply port 31b in the far side distribution mechanism 50b is difficult to be received by the receiving port 32b, the supply amount setting structure as described above is realized and the far side distribution mechanism 50b receives the fuel gas G. The start supply amount Y becomes larger than the reception start supply amount X of the near side distribution mechanism 50a.

  With such a supply amount setting structure, the low combustion load operation in which the fuel gas G is supplied only to the pilot combustion channel 41 and the pilot combustion is performed only in the downstream portion of the pilot combustion channel 41 in the combustion unit 45. From the above, in the combustion section 45, in addition to the pilot combustion, a good combustion state is realized in a wide combustion load range over the middle combustion load operation and the high combustion load operation in which the main combustion is performed also in the downstream portion of the main combustion passage 42 can do.

That is, referring to FIG. 4, in the low combustion load operation, the total supply amount of the fuel gas G is set within a range less than the reception start supply amount X of the near side distribution mechanism 50a, and the first supply ports 31a, 31a, The fuel gas G ejected from 31b is not received by the receiving ports 32a and 32b, and the fuel gas G is supplied only to the pilot combustion channel 41.
In such a low combustion load operation, since an excessively lean air-fuel mixture is not formed in the main combustion channel 42, generation of unburned components can be suppressed.

Further, in the middle combustion load operation, the total supply amount of the fuel gas G is set within a range that is not less than the reception start supply amount X of the near side distribution mechanism 50a and less than the reception start supply amount Y of the far side distribution mechanism 50b. Only a part of the fuel gas G ejected from the first supply port 31a of the near side distribution mechanism 50a is received by the receiving port 32a opposite to the fuel gas G, and the received fuel gas G is supplied to the first side of the near side distribution mechanism 50a. 2 from the supply port 34a to the side close to the pilot combustion channel 41 in the main combustion channel 42.
In such a medium combustion load operation, the second supply port 34a of the near side distribution mechanism 50a on the side closer to the pilot combustion channel 41 that ensures stable combustion is secured to the main combustion channel 42. The fuel gas G can be supplied only from the combustion gas, and the fuel gas supplied to the main combustion flow path 42 can be well transferred from the pilot combustion to be ignited and burned.

Further, in the high combustion load operation, the total supply amount of the fuel gas G is set within a range equal to or larger than the reception start supply amount Y of the far side distribution mechanism 50b, and is ejected from the first supply ports 31a and 31b. A part of the fuel gas G is received by the respective receiving ports 32a and 32b facing each other, and the received fuel gas G is supplied to the entire main combustion channel 42 from the respective second supply ports 34a and 34b. In addition, low NOx combustion using a lean premixed gas can be realized.
The

Near the downstream end of the inner cylinder 2, a cylindrical first air stage ring 13 (an example of a first guide wall) that is reduced in diameter along the flow direction of the air A is provided.
And by providing this 1st air stage ring 13, a combustion part is along the wall part 2a near the pilot combustion flow path 42 of the main combustion flow path 41, that is, the wall part 2a outside the inner cylinder. The air-fuel mixture flowing out to 45 can be guided to the pilot combustion channel 41 side and reliably burned by pilot combustion.

In the main combustion channel 42, the downstream side of the second supply member 5 includes a near channel 42 a near the pilot combustion channel 41 and a far channel 42 b far from the pilot combustion channel 41. A partition cylinder 14 (an example of a partition wall) is provided.
By providing the partition cylinder 14, the fuel gas G supplied from the second supply port 34a of the near side distribution mechanism 50a to the main combustion flow path 42 moves away from the pilot combustion flow path 41, and the far side flow path. The diffusion to the side of 42b can be suppressed, and the fuel gas G can be reliably burned by the relatively stable combustion on the pilot combustion channel 41 side.

Further, a cylindrical second air stage ring 15 (an example of a second guide wall) having a diameter reduced along the flow direction of the air A is provided near the downstream end of the partition tube 14.
By providing the second air stage ring 15, the air-fuel mixture that has flowed out to the combustion section 45 along the outer wall portion 14 a of the partition tube 14 is guided to the pilot combustion flow path 45 side to perform pilot combustion. It can be reliably burned.

  Between the outer cylinder 3 and the inner cylinder 2, struts 12 for supporting the inner cylinder 2 on the outer cylinder 3 are distributed in the circumferential direction. An ignition device for igniting the air-fuel mixture flowing out from the flow path 41 is incorporated.

In addition, a cylindrical mixing promotion cylinder 21 is formed outside the second supply ports 34a and 34b formed in the second supply member 5 so as to cover the outer sides of the second supply ports 34a and 34b. , 22 are provided.
By providing the mixing promotion cylinders 21 and 22, the fuel gas G supplied from the second supply ports 34a and 34b to the main combustion flow path 42 collides in a direction away from the inner cylinder 2 (that is, in the radial direction). Thus, the colliding fuel gas G can be diffused in the circumferential direction in the main combustion flow path 42.

On the downstream side of the first supply member 4 of the pilot combustion channel 41, there is a first swirler 16 that imparts a turning force to the mixture of the air A and the fuel gas G flowing into the pilot combustion channel 41. Furthermore, a second swirler 11 is disposed on the downstream side of the second supply member 5 of the main combustion flow path 42 to apply a turning force to the air-fuel mixture of the air A and the fuel gas G. Yes.
Then, by the first swirler 16 and the second swirler 11, a turning force is applied to the air A or the air-fuel mixture in the pilot combustion channel 41 and the main combustion channel 42, thereby improving the flame holding property. Can do.

[Another embodiment]
(1) In the above-described embodiment, the first supply port 31a and the supply path 33a of the near-side distribution mechanism 50a and the first supply port 31b and the supply path 33b of the far-side distribution mechanism 50b are connected to the common first supply member 4. As shown in FIGS. 5 and 6, the first supply port 31a and the supply path 33a of the near-side distribution mechanism 50a are separately provided in the first supply member 4a and the second supply member. As shown in FIGS. 5 and 7, the first supply port 31b and the supply path 33b of the far side distribution mechanism 50b are separated from the first supply member 4a and the second supply member 5a. You may form in the 1st supply member 4b and the 2nd supply member 5b.

  Further, when the near side distribution mechanism 50a and the far side distribution mechanism 50b are configured separately as described above, as shown in FIG. 5, the opening portion 7a of the near side distribution mechanism 50a and the open side distribution mechanism 50b are opened. The first supply ports 31a of the distribution mechanisms 50a and 50b overlap each other when viewed in the flow direction of the air A in the pilot combustion channel 41 so that the air A is stably supplied to each of the portions 7b. Without being distributed in the cylindrical radial direction of the pilot combustion channel 41.

(2) In the above embodiment, the near-side distribution mechanism 50a is arranged upstream of the far-side distribution mechanism 50b along the flow of the air A. Conversely, as shown in FIG. 50a may be arranged on the downstream side of the far side distribution mechanism 50b.
Even in this case, each of the near-side distribution mechanism 50a and the far-side distribution mechanism 50b can be formed integrally or separately.

(3) In the above embodiment, as a general example, it has been described which utilizes the air A as the oxygen-containing gas for combustion of the fuel gas G, as combustion oxygen-containing gas outside the air Ki以 is For example, it is possible to use an oxygen-enriched gas whose oxygen component content is higher than air.

(4) In the above embodiment, the near side distribution mechanism 50a and the far side distribution mechanism 50b are provided one by one in the first supply member 4 and the second supply member 5 in order to realize the supply amount setting structure. However, the combination of each distribution mechanism which implement | achieves a supply amount setting structure can be changed suitably. For example, one of the near-side distribution mechanism and the far-side distribution mechanism may be provided more than the other.
Also, three or more distribution mechanisms are provided, for example, the first supply port so that the reception start supply amount sequentially increases from the position close to the pilot combustion flow path 41 to the position far from the pilot combustion channel 41. The supply amount setting structure may be configured by sequentially increasing the separation distance from the receiving port. In this case, in a certain distribution mechanism, the distribution mechanism in which the position of the second supply port is closer to the pilot combustion channel 41 side than that of the distribution mechanism is the near-side distribution mechanism 50a. It can be said that the distribution mechanism in which the position of the second supply port is farther from the pilot combustion channel 41 than that of the distribution mechanism is the far-side distribution mechanism 50b.

(5) In the above embodiment, the example in which the burner device according to the present invention is applied to the burner device 60 provided in the gas turbine engine has been described. However, the burner device according to the present invention is a burner for an incinerator alone. It can also be used as a device.

Schematic configuration diagram of burner device for gas turbine engine Cross-sectional front view of the burner device shown in FIG. Enlarged view for explaining the configuration of the distribution mechanism The graph which shows the relationship between the total supply flow rate of fuel gas, and the reception start supply amount of each distribution mechanism Cross-sectional front view of burner device of another embodiment The enlarged view for demonstrating the structure of the near side distribution mechanism of FIG. The enlarged view for demonstrating the structure of the far side distribution mechanism of FIG. The enlarged view for demonstrating the structure of the distribution mechanism of the burner apparatus of another embodiment. Schematic configuration diagram of a conventional burner device

Explanation of symbols

1: fuel cylinders 4, 4a, 4b: first supply members 5, 5a, 5b: second supply members 7, 7a, 7b: open part 13: first air stage ring (first guide wall)
14: Compartment cylinder (compartment wall)
15: Second air stage ring (second guide wall)
21, 22: Mixing promotion cylinders 31a, 31b: first supply ports 32a, 32b: receiving ports 33a, 33b: supply channels 34a, 34b: second supply ports 41: pilot combustion channel (first combustion channel)
42: Main combustion channel (second combustion channel)
43: Fuel flow path 45: Combustion part 50a: Near side distribution mechanism 50b: Far side distribution mechanism 60: Burner device A: Air G: Fuel gas X, Y: Acceptance start supply amount

Claims (6)

A first combustion flow path and a second combustion flow path for supplying an air-fuel mixture formed by supplying a fuel gas to an oxygen-containing gas flowing inside to the combustion section and burning it;
A plurality of distribution mechanisms for distributing and supplying fuel gas to the first combustion channel and the second combustion channel;
The distribution mechanism has a first supply port that opens into the first combustion channel and ejects fuel gas in a direction that intersects the flow direction of the oxygen-containing gas in the first combustion channel; and the first combustion A receiving port that opens in the flow path facing the fuel gas ejection direction of the first supply port is formed on one end side, and a second supply port that opens in the second combustion flow path is formed on the other end side A part of the fuel gas ejected from the first supply port when the total supply amount is equal to or greater than a predetermined reception start supply amount, and is configured to be received by the reception port.
The plurality of distribution mechanisms include a near-side distribution mechanism in which the second supply port is disposed closer to the first combustion flow path, and the second supply port than the near-side distribution mechanism. A burner device comprising a far side distribution mechanism disposed on the far side from the combustion flow path,
The first supply port of each distribution mechanism is provided at a different position in the flow direction of the oxygen-containing gas;
Supply in which the arrangement state of the first supply port and the receiving port in each of the distribution mechanisms sets the reception start supply amount in the far side distribution mechanism to be larger than the reception start supply amount in the near side distribution mechanism have a quantity set structure,
The burner device in which the supply amount setting structure is a structure in which a separation distance between the first supply port and the receiving port in the far side distribution mechanism is set larger than the separation distance in the near side distribution mechanism . A first induction wall for guiding the air-fuel mixture that has flowed out to the combustion section along the wall portion of the second combustion flow path closer to the first combustion flow path toward the first combustion flow path; burner device according to claim 1. The downstream side of the plurality of second supply ports is connected to the second combustion channel, the near channel on the side near the first combustion channel and the far side on the side far from the first combustion channel. burner device according to claim 1, further comprising a partition wall for partitioning into the flow path. 4. The burner device according to claim 3 , further comprising a second guide wall that guides the air-fuel mixture that has flowed out downstream of the partition wall along the partition wall in the far-side flow channel toward the first combustion channel. . Said first supply port in said respective dispensing mechanism, wherein in a first flow direction when viewed in the oxygen-containing gas at a combustion flow path, any one of 4 claims 1, which are arranged without overlapping each other The burner device described in 1. A gas turbine engine comprising the burner device according to any one of claims 1 to 5, wherein the turbine is rotated by kinetic energy of combustion exhaust gas discharged from a combustion portion of the burner device.

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