阅读说明：本技术 一种燃气轮机燃烧室多层导流衬套 (Multilayer flow guide bush of combustion chamber of gas turbine ) 是由 刘文科 于 2020-07-11 设计创作，主要内容包括：本发明公开的一种燃气轮机燃烧室多层导流衬套,包括导流衬套外体,所述导流衬套外体的一端外表面设置有连接端盖,所述连接端盖的一端外表面设置有燃料喷嘴。本发明所述的一种燃气轮机燃烧室多层导流衬套,内衬套在使用时能够使空气更好进入到火焰筒内进行燃烧,在使用时能够使燃烧的效果更好,能够避免燃料燃烧不充分而造成浪费,导热片在使用时能够对导流衬套外体内部产生的温度进行快速的挥发,在使用时通过热量传导,使热量通过导热片进行挥发,引流片在使用时能够有益于对空气起到导流的,在使用时能够使空气更充分,更快速的与燃料进行混合燃烧,在使用时有益于提高工作效率,在使用时选择性较高。(The invention discloses a multilayer flow guide bush of a combustion chamber of a gas turbine, which comprises a flow guide bush outer body, wherein a connecting end cover is arranged on the outer surface of one end of the flow guide bush outer body, and a fuel nozzle is arranged on the outer surface of one end of the connecting end cover. According to the multilayer flow guide bush of the gas turbine combustor, the inner bush can enable air to better enter the flame tube to be combusted when in use, the combustion effect can be better when in use, waste caused by insufficient fuel combustion can be avoided, the heat conducting fins can quickly volatilize the temperature generated inside the outer body of the flow guide bush when in use, the heat can volatilize through the heat conducting fins by heat conduction when in use, the flow guide fins can be beneficial to guiding the air when in use, the air can be more sufficient when in use, the air can be more quickly mixed with the fuel to be combusted, the working efficiency is beneficially improved when in use, and the selectivity is higher when in use.)

1. The utility model provides a multilayer water conservancy diversion bush of gas turbine combustor which characterized in that: the flow guide sleeve comprises a flow guide sleeve outer body (1), a connecting end cover (2) is arranged on the outer surface of one end of the flow guide sleeve outer body (1), a fuel nozzle (3) is arranged on the outer surface of one end of the connecting end cover (2), an inner lining (5) is arranged inside the flow guide sleeve outer body (1), and a flame tube (4) is arranged inside the inner lining (5).

2. The gas turbine combustor multilayer flow sleeve of claim 1, wherein: the flame tube (4) comprises a tube body (401), a fixing block (402) and an air inlet hole (403), wherein the fixing block (402) and the air inlet hole (403) are both located on the outer wall of the tube body (401), and the air inlet hole (403) is located on one side of the fixing block (402).

3. The gas turbine combustor multilayer flow sleeve of claim 2, wherein: the outer wall of barrel (401) and the one end surface welded connection of fixed block (402), the quantity of fixed block (402) is four groups, barrel (401) and inlet port (403) are seted up through mechanical equipment and are formed, inlet port (403) are axial evenly distributed.

4. The gas turbine combustor multilayer flow sleeve of claim 1, wherein: the inner bushing (5) comprises a circular inner cylinder (501), an airflow hole (502), a heat conducting sheet (503), a flow guiding sheet (504) and air holes (505), wherein the airflow hole (502) and the heat conducting sheet (503) are both located on the outer wall of the circular inner cylinder (501), the airflow hole (502) is located on one side of the heat conducting sheet (503), the flow guiding sheet (504) is both located on the inner wall of the circular inner cylinder (501), and the air holes (505) are located in the middle of the flow guiding sheet (504).

5. A gas turbine combustor multilayer flow sleeve as claimed in claims 4, 1 and 2, wherein: the circular inner cylinder (501) and the airflow hole (502) are formed by opening mechanical equipment, the airflow holes (502) are uniformly distributed in the axial direction, a first fixing groove is arranged between the circular inner cylinder (501) and the heat conducting fin (503), the outer wall of the circular inner cylinder (501) is detachably connected with the outer surface of one end of the heat-conducting fin (503) through a first fixing groove, and the other end of the heat conducting fin (503) extends out of the outer body (1) of the flow guide bush, the number of the heat conducting fins (503) is eight, a second fixing groove is arranged between the circular inner cylinder (501) and the flow guiding fin (504), the inner wall of the circular inner cylinder (501) is detachably connected with the outer surface of one end of the drainage sheet (504) through a second fixing groove, the outer surface of the other end of the drainage sheet (504) is connected with the outer wall of the cylinder body (401), the drainage sheet (504) and the air holes (505) are formed by mechanical equipment.

6. The multilayer flow guide liner for a gas turbine combustor as claimed in claims 2 and 4, wherein: the outer wall of the barrel (401) is detachably connected with the inner wall of the circular inner barrel (501) through a fixing block (402), the size of the air inlet hole (403) is the same as that of the airflow hole (502), the air inlet hole (403) and the airflow hole (502) are of corresponding structures, and the flow guiding sheets (504) are distributed between the air inlet hole (403) and the airflow hole (502).

7. The gas turbine combustor multilayer flow sleeve of claim 1, wherein: be provided with the cross screw between the water conservancy diversion bush outer body (1) and the connection end cover (2), the one end surface of the water conservancy diversion bush outer body (1) can be dismantled through the cross screw and the other end surface of connecting end cover (2) and be connected, be provided with the buckle between connection end cover (2) and fuel nozzle (3), the one end surface of connecting end cover (2) can be dismantled through the buckle and the one end surface of fuel nozzle (3) and be connected, and fuel nozzle (3) stretch into the inside of the water conservancy diversion bush outer body (1) and be connected with flame tube (4).

8. The gas turbine combustor multilayer flow sleeve of claim 4, wherein: the number of the diversion sheets (504) is twice that of the airflow holes (502), the thickness of the diversion sheets (504) is 5MM, the thickness of the heat-conducting sheets (503) is 10MM, and the diversion sheets (504) and the heat-conducting sheets (503) are both made of brass.

Technical Field

The invention relates to the field of gas turbine equipment, in particular to a multilayer flow guide bushing of a gas turbine combustion chamber.

Background

The gas turbine is an internal combustion type power machine which takes continuously flowing gas as a working medium to drive an impeller to rotate at high speed and converts the energy of fuel into useful work, and is a rotary impeller type heat engine; the compressed air enters a combustion chamber, is mixed with the injected fuel and then is combusted to form high-temperature gas, and then the high-temperature gas immediately flows into a gas turbine to expand and do work to push a turbine impeller to drive a compressor impeller to rotate together; the work capacity of the heated high-temperature gas is obviously improved, so that the gas turbine still has residual work as the output mechanical work of the gas turbine while driving the gas compressor, when the gas turbine is started from a static state, the gas turbine needs to be driven by the starter to rotate, after the gas turbine is accelerated to be capable of independently operating, the starter is disconnected, the existing gas turbine is usually provided with a flow guide bush when in use, and the flow guide bush mainly plays a role in enabling air to be better fused with fuel for combustion when in use.

But current air guide sleeve has certain inconvenience when using, and current air guide sleeve can not be fine when using play the leading best use to the air, and the flow direction of air takes place the confusion easily when using, and current air guide sleeve radiating effect is comparatively general when using, accelerates ageing speed easily when long-time use, and current air guide sleeve intensity is not high when using, takes place to warp easily and damages.

Disclosure of Invention

The invention mainly aims to provide a multilayer flow guide bushing of a combustion chamber of a gas turbine, which can effectively solve the problems in the background art.

In order to achieve the purpose, the invention adopts the technical scheme that:

the multilayer flow guide bush of the combustion chamber of the gas turbine comprises a flow guide bush outer body, wherein a connecting end cover is arranged on the outer surface of one end of the flow guide bush outer body, a fuel nozzle is arranged on the outer surface of one end of the connecting end cover, an inner bushing is arranged inside the flow guide bush outer body, and a flame tube is arranged inside the inner bushing.

Preferably, the flame tube comprises a tube body, a fixing block and an air inlet, the fixing block and the air inlet are both located on the outer wall of the tube body, and the air inlet is located on one side of the fixing block.

Preferably, the outer wall of the barrel is connected with the outer surface of one end of each fixing block in a welding mode, the number of the fixing blocks is four, the barrel and the air inlets are formed by opening mechanical equipment, and the air inlets are axially and uniformly distributed.

Preferably, the inner bushing comprises a circular inner cylinder, an airflow hole, a heat conducting sheet, a drainage sheet and an air vent, the airflow hole and the heat conducting sheet are both located on the outer wall of the circular inner cylinder, the airflow hole is located on one side of the heat conducting sheet, the drainage sheet is located on the inner wall of the circular inner cylinder, and the air vent is located in the middle of the drainage sheet.

Preferably, circular inner tube and air current hole are seted up through mechanical equipment and are formed, and the air current hole is axial evenly distributed, be provided with the fixed slot No. one between circular inner tube and the conducting strip, the outer wall of circular inner tube can be dismantled through the one end surface of a fixed slot and conducting strip and be connected, and the other end of conducting strip stretches out in the outside of the outer body of water conservancy diversion bush, the quantity of conducting strip is eight groups, be provided with the fixed slot No. two between circular inner tube and the conducting strip, the inner wall of circular inner tube all can be dismantled through the one end surface of fixed slot No. two and the drainage piece and be connected, and the other end surface connection of drainage piece and the outer wall of barrel, the drainage piece is seted up through mechanical equipment with the bleeder vent and is.

Preferably, the outer wall of barrel passes through the inner wall detachable connection of fixed block and circular inner tube, the size of inlet port is the same with the size in air current hole, and inlet port and air current hole are corresponding structure, the drainage piece all distributes between inlet port and air current hole.

Preferably, be provided with the cross screw between the outer body of flow guide bush and the connection end cover, the one end surface of the outer body of flow guide bush can be dismantled through the cross screw and the other end surface of connection end cover and be connected, be provided with the buckle between connection end cover and the fuel nozzle, the one end surface of connection end cover can be dismantled through the buckle and the one end surface of fuel nozzle and be connected, and the fuel nozzle stretches into the inside of the outer body of flow guide bush and is connected with the flame tube.

Preferably, the number of the diversion pieces is twice that of the airflow holes, the thickness of the diversion pieces is 5MM, the thickness of the heat conduction pieces is 10MM, and the diversion pieces and the heat conduction pieces are both made of brass.

Compared with the prior art, the invention has the following beneficial effects: this multilayer water conservancy diversion bush:

the inside lining cover can make the air better enter into the flame tube when using and burn, the effect that can make the burning when using is better, can avoid the fuel burning insufficient and cause the waste, the conducting strip can carry out quick volatilizing to the temperature that the internal portion of water conservancy diversion bush external body produced when using, pass through heat conduction when using, make the heat volatilize through the conducting strip, the drainage piece can be of value to when using and play the water conservancy diversion to the air, can make the air more abundant when using, more quick and fuel mix the burning, be of value to improving work efficiency when using.

The whole flow guide bushing instrument is simple in structure, convenient to operate and better in using effect compared with the traditional mode.

Drawings

FIG. 1 is a schematic view of the overall structure of a multilayer flow guiding liner of a gas turbine combustor according to the present invention;

FIG. 2 is a schematic view of the internal structure of the flow guide sleeve outer body of the multilayer flow guide sleeve of the gas turbine combustor according to the present invention;

FIG. 3 is a schematic view of a combustor basket structure of a gas turbine combustor multi-layer flow guide sleeve according to the present invention;

FIG. 4 is a schematic view of an inner liner structure of a multilayer flow guiding liner of a gas turbine combustor according to the present invention;

FIG. 5 is a schematic view of a structure of a flow-guiding plate of a multilayer flow-guiding liner of a gas turbine combustor according to the present invention;

FIG. 6 is a side view of a flow sleeve outer body of a multilayer flow sleeve for a gas turbine combustor in accordance with the present invention;

FIG. 7 is an enlarged view of the multilayer flow guide sleeve of the gas turbine combustor at A in FIG. 4.

In the figure: 1. a flow guide bushing outer body; 2. connecting an end cover; 3. a fuel nozzle; 4. a flame tube; 401. a barrel; 402. a fixed block; 403. an air inlet; 5. an inner liner; 501. a circular inner cylinder; 502. an airflow aperture; 503. a heat conductive sheet; 504. a drainage sheet; 505. and (4) air holes.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1 to 7, a multilayer flow guide bush of a gas turbine combustor comprises a flow guide bush outer body 1, a connecting end cover 2 is arranged on the outer surface of one end of the flow guide bush outer body 1, a fuel nozzle 3 is arranged on the outer surface of one end of the connecting end cover 2, an inner bushing 5 is arranged inside the flow guide bush outer body 1, and a flame tube 4 is arranged inside the inner bushing 5.

The flame tube 4 comprises a tube body 401, a fixing block 402 and an air inlet 403, the fixing block 402 and the air inlet 403 are both located on the outer wall of the tube body 401, the air inlet 403 is located on one side of the fixing block 402, the flame tube 4 is beneficial to mixed combustion of fuel and air when in use, and is beneficial to enabling the fuel to generate kinetic energy to push the turbine to rotate when in use.

The outer wall of the barrel 401 is connected with the outer surface of one end of the fixing block 402 in a welding mode, the number of the fixing blocks 402 is four, the barrel 401 and the air inlet holes 403 are formed by mechanical equipment, the air inlet holes 403 are axially and uniformly distributed, the air inlet holes 403 are beneficial to controlling the air to enter the barrel 401 when in use, and the air can enter more evenly when in use.

Wherein, the neck bush 5 includes circular inner tube 501, the air current hole 502, conducting strip 503, drainage piece 504 and bleeder vent 505, air current hole 502 all is located the outer wall of circular inner tube 501 with conducting strip 503, air current hole 502 is located one side of conducting strip 503, drainage piece 504 all is located the inner wall of circular inner tube 501, bleeder vent 505 is located the middle part of drainage piece 504, neck bush 5 is favorable to playing the effect of water conservancy diversion to the air when using, can make the air better enter into and burn in flame tube 4, can make the effect of burning better when using, can avoid the fuel burning inadequately and cause the waste.

Wherein, the circular inner cylinder 501 and the airflow hole 502 are formed by mechanical equipment, the airflow hole 502 is axially and uniformly distributed, a first fixing groove is arranged between the circular inner cylinder 501 and the heat conducting fins 503, the outer wall of the circular inner cylinder 501 is detachably connected with the outer surface of one end of the heat conducting fins 503 through the first fixing groove, the other end of the heat conducting fins 503 extends out of the guide bush outer body 1, the number of the heat conducting fins 503 is eight, a second fixing groove is arranged between the circular inner cylinder 501 and the drainage fins 504, the inner wall of the circular inner cylinder 501 is detachably connected with the outer surface of one end of the drainage fins 504 through the second fixing groove, the outer surface of the other end of the drainage fins 504 is connected with the outer wall of the cylinder 401, the drainage fins 504 and the air holes 505 are formed by mechanical equipment, the heat conducting fins 503 can rapidly volatilize the temperature generated inside the guide bush outer body 1 when in use, and conduct, make the heat volatilize through conducting strip 503, the drainage piece 504 can be of value to when using and play the water conservancy diversion to the air, can make the air more abundant when using, and the faster carries out the co-combustion with fuel, is favorable to improving work efficiency when using.

The outer wall of the cylinder 401 is detachably connected with the inner wall of the circular inner cylinder 501 through the fixing block 402, the size of the air inlet 403 is the same as that of the airflow hole 502, the air inlet 403 and the airflow hole 502 are in a corresponding structure, the drainage pieces 504 are distributed between the air inlet 403 and the airflow hole 502, and the airflow hole 502 is beneficial to enabling air to enter the cylinder 401 through the air inlet 403.

Wherein, be provided with the cross screw between the outer body 1 of water conservancy diversion bush and the connection end cover 2, the one end surface of the outer body 1 of water conservancy diversion bush can be dismantled through the cross screw and the other end surface of connecting end cover 2 and be connected, be provided with the buckle between connection end cover 2 and the fuel nozzle 3, the one end surface of connecting end cover 2 can be dismantled through the buckle and the one end surface of fuel nozzle 3 and be connected, and fuel nozzle 3 stretches into the inside of the outer body 1 of water conservancy diversion bush and is connected with flame tube 4, fuel nozzle 3 is favorable to the fuel when using and enters into in the barrel 401.

Wherein, the quantity of drainage piece 504 is the twice of air flow hole 502, and the thickness of drainage piece 504 is 5MM, and the thickness of conducting strip 503 is 10MM, and the material of drainage piece 504 and conducting strip 503 is the brass, and the brass is favorable to carrying out the heat conduction when using, more is favorable to volatilizing the thermal when using, and the cooling effect is better.

It should be noted that, the present invention is a multilayer flow guiding bushing of a gas turbine combustor, when in use, flowing air will enter the interlayer space between the outer body 1 and the inner liner 5 of the flow guiding bushing, the entering air will enter the interlayer space between the inner liner 5 and the flame tube 4 through the airflow hole 502, the flowing air will enter the inside of the cylinder 401 through the air inlet hole 403 to mix with the fuel sprayed by the fuel nozzle 3 for combustion, when in use, the flow guiding sheet 504 can guide the air entering the air inlet hole 403 from the airflow hole 502, can reduce the loss of the air entering the air inlet hole 403 from the airflow hole 502, can make most of the air enter the inside of the cylinder 401 through the air inlet hole 403, so that the air can be better combusted, when in use, the heat quantity of the combustion inside of the cylinder 401 can be guided to the outside of the outer body 1 of the flow guiding bushing through the heat conducting sheet 503 by the principle of heat conduction, when in use, the heat generated in the cylinder 401 can be volatilized quickly, the service life is prolonged, the drainage sheets 504 and the heat-conducting sheets 503 are beneficial to increasing the strength among the guide sleeve outer body 1, the flame tube 4 and the inner lining 5, and the effect is better when in use.

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.