Disclosure of Invention
The embodiment of the application provides a micro-mixing nozzle with adjustable jet speed, a combustor and a gas turbine, which are used for solving the problems that the micro-mixing nozzle in the prior art is difficult to adjust the outlet speed according to the requirements of different fuels and cannot adapt to the combustion adjustment of multiple fuels.
Embodiments of the present application provide a jet speed adjustable micro-mixing nozzle comprising:
A nozzle body including a plurality of micro-mixing pipes, each of which has a micro-mixing channel for injecting fuel gas therein;
The adjusting assembly comprises a plurality of adjusting units, each adjusting unit comprises an adjusting main body, a connecting structure and a sleeve, each sleeve is sleeved on the outer side of one micro-mixing pipe, the adjusting main body is arranged at the outlet of the micro-mixing pipe, the adjusting main body is connected to the inner side of the sleeve through the connecting structure, and a chute avoiding the connecting structure is arranged on the micro-mixing pipe;
The cross section of each adjusting body is different along the length direction of the micro-mixing pipe, and the sleeve can adjust the position of the adjusting body by moving along the micro-mixing pipe so as to change the outlet cross section of the micro-mixing pipe through the adjusting body.
In an embodiment, the opposite sides of the micro-mixing pipe are respectively provided with the sliding grooves, the connecting structure comprises a first connecting body, a second connecting body and a third connecting body, the first connecting body and the second connecting body respectively penetrate through the sliding grooves on the two sides to be connected with the inner wall of the sleeve, and the third connecting body is connected with the adjusting main body.
In one embodiment, the adjustment assembly further comprises a sleeve connection arranged to secure a plurality of said sleeves together such that a plurality of said adjustment units move together.
An embodiment is characterized in that at least part of the sleeve is provided with a fastener arranged to fasten the sleeve to the micro-mixing tube after the sleeve has been moved to a predetermined position.
In one embodiment, the nozzle body further comprises a first end cap provided with a plurality of mounting holes corresponding to the micro-mixing pipes, and one ends of the micro-mixing pipes having outlets are respectively inserted into the mounting holes to be mounted on the first end cap;
the chute is configured to extend to an end of the micro-mixing tube having the outlet, and the first end cap is configured to limit the extent to which the sleeve slides toward the outlet.
In one embodiment, the inner wall of the mounting hole is provided with a limit protruding portion which is matched with the sliding groove.
In one embodiment, the nozzle body further comprises a second end cap and an outer Zhou Keti, the second end cap is mounted at an end of the micro-mixing tube remote from the first end cap, the outer Zhou Keti is configured to be disposed around a plurality of the micro-mixing tubes, and two ends of the outer Zhou Keti are respectively connected to the first end cap and the second end cap.
In one embodiment, each of the adjustment bodies comprises a first cone by which the adjustment body changes the outlet cross-sectional area of the micro-mixing tube when in the adjustment position.
In one embodiment, each of the conditioning bodies further comprises a second cone secured to the first cone with the large ends of the first and second cones connected toward each other, wherein the second cone is farther from the micro-mixing tube than the first cone.
Embodiments of the present application also provide a burner comprising at least one micro-mixing nozzle as described above.
Embodiments of the present application also provide a gas turbine comprising a combustor as described above.
According to the technical scheme provided by the application, the jet speed of the micro-mixing nozzle can be adjusted according to the characteristics of different fuels so as to adapt to the combustion requirements of different fuels, thereby ensuring the stability and safety of combustion.
Additional features and advantages of the application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the application. Other advantages of the application may be realized and attained by the structure particularly pointed out in the written description and drawings.
Detailed Description
The present application has been described in terms of several embodiments, but the description is illustrative and not restrictive, and it will be apparent to those of ordinary skill in the art that many more embodiments and implementations are possible within the scope of the described embodiments. Although many possible combinations of features are shown in the drawings and discussed in the detailed description, many other combinations of the disclosed features are possible. Any feature or meta-body of any embodiment may be used in combination with, or in place of, any other feature or meta-body of any other embodiment, unless expressly limited otherwise.
The present application includes and contemplates combinations of features and meta-bodies known to those of ordinary skill in the art. The disclosed embodiments, features and metamaterials of the present application can also be combined with any conventional features or metamaterials to form a unique inventive solution. Any feature or meta-body of any embodiment may also be combined with features or meta-bodies from other inventive arrangements to form another unique inventive arrangement. It is therefore to be understood that any of the features shown and/or discussed in the present application may be implemented alone or in any suitable combination. Accordingly, the embodiments are not to be restricted except in light of the attached claims and their equivalents. Further, various modifications and changes may be made within the scope of the appended claims.
Furthermore, in describing representative embodiments, the specification may have presented the method and/or process as a particular sequence of steps. However, to the extent that the method or process does not rely on the particular order of steps set forth herein, the method or process should not be limited to the particular sequence of steps described. Other sequences of steps are possible as will be appreciated by those of ordinary skill in the art. Accordingly, the particular order of the steps set forth in the specification should not be construed as limitations on the claims. Furthermore, the claims directed to the method and/or process should not be limited to the performance of their steps in the order written, and one skilled in the art can readily appreciate that the sequences may be varied and still remain within the spirit and scope of the embodiments of the present application.
An embodiment of the present application provides a micro-mixing nozzle with adjustable jet speed, as shown in fig. 1-2, comprising a nozzle body 1 and an adjusting assembly 2.
The nozzle body 1 includes a plurality of micro-mixing pipes 11, each micro-mixing pipe 11 having therein a micro-mixing channel for injecting fuel gas.
The adjusting assembly 2 comprises a plurality of adjusting units, each adjusting unit comprises an adjusting main body 21, a sleeve 22 and a connecting structure 23, each sleeve 22 is sleeved on the outer side of one micro-mixing pipe 11, the adjusting main body 1 is arranged at the outlet of the micro-mixing pipe 11, the adjusting main body 21 is connected to the inner side of the sleeve 22 through the connecting structure 23, and a chute 111 of the avoiding connecting structure 23 is arranged on the micro-mixing pipe 11.
Wherein the cross-sectional size of each of the adjustment bodies 21 is set to be different along the length direction of the micro-mixing tube 11, and the movement of the sleeve 22 along the micro-mixing tube 11 can adjust the position of the adjustment body 21 to change the outlet cross-sectional area of the micro-mixing tube 11 by the adjustment body 21. The jet velocity of the micro-mixing nozzle is changed by changing the outlet cross-sectional area of the micro-mixing tube 11.
According to the technical scheme provided by the application, the jet speed of the micro-mixing nozzle can be adjusted according to the characteristics of different fuels so as to adapt to the combustion requirements of different fuels, thereby ensuring the stability and safety of combustion.
In one embodiment, as shown in fig. 5-7, each conditioning body 21 includes a first cone 211, and the conditioning bodies 21 change the outlet cross-sectional area of the micro-mixing tube 11 via the first cone 211 when in the conditioning position.
In this embodiment, each adjusting body 21 further includes a second cone 212, and the second cone 212 is fixed to the first cone 211, and the second cone 212 is far away from the micro-mixing tube 11 compared with the first cone 211, wherein the large ends of the first cone 211 and the second cone 212 are connected towards each other, so that the combustion gas flows along the second cone 212 after being ejected from the outlet of the micro-mixing tube 11, and the disturbance and the flow loss of the gas flow can be reduced, and the combustion stability can be improved.
In one embodiment, as shown in fig. 3 to 4, the opposite sides of the micro-mixing tube 11 are respectively provided with sliding grooves 111, as shown in fig. 5 to 7, the connection structure 23 for connecting the adjusting body 21 to the sleeve 22 includes a first connection body 231, a second connection body 232 and a third connection body 233, the first connection body 231, the second connection body 232 and the third connection body 233 form a T-shaped structure, the first connection body 231 and the second connection body 232 respectively pass through the sliding grooves 111 at the two sides to be connected to the inner wall of the sleeve 22, and the third connection body 23 is connected to the adjusting body 21. The connection 23 is located outside the combustion zone and is at a lower temperature during combustion, thereby extending the service life of the device.
In this embodiment, the connecting structure 23 is connected to the sleeve 22 by providing two connectors passing through the chute 111, which is beneficial to the stability of connection, and the first connector 231 and the second connector 232 can be respectively configured to slide in cooperation with the chute 111 to perform a guiding function. In this way, the movement of each conditioning unit relative to the micro-mixing tube 11 can be made relatively stable. It will be appreciated that one chute or more chutes may be provided on the micro-mixing tube 11, without limitation. Correspondingly, the connecting structure 23 needs to be changed correspondingly, and connectors corresponding to the sliding grooves 111 one by one are arranged.
In one embodiment, the conditioning assembly 2 further comprises a sleeve connector 25, the sleeve connector 25 being arranged to secure the plurality of sleeves 22 together such that the plurality of sleeves 22 move together so that the plurality of conditioning units can effect simultaneous conditioning of the outlets of the micro-mixing channels. In the embodiment of fig. 5, the sleeve coupling 25 has a disc structure provided with a fixing hole corresponding to each sleeve 22, and the sleeve 22 is inserted into the fixing hole to be fixed, so that a plurality of adjusting units are fixedly connected as a unitary structure.
It will be appreciated that the solution of the application is not limited to a simultaneous adjustment of a plurality of adjustment units, but that each adjustment unit may be provided for individual adjustment.
After each adjusting unit adjusts the outlet of the micro-mixing channel, the adjusting units can be fixed, so that the influence on the outlet air injection speed caused by the position change of the adjusting main body 21 due to vibration or misoperation in the operation process of the nozzle is avoided, and the operation stability and reliability of the device can be ensured.
In one embodiment, at least a portion of the sleeve 22 is provided with a fastener 24, the fastener 24 being configured to fasten the sleeve 22 to the micro-mixing tube 11 after the sleeve 22 has been moved to a predetermined position. The fasteners 24 may be bolts penetrating through the walls of the sleeves 22, and the sleeves 22 may be tightened against the micro-mixing tube 11 by rotating the bolts, and the fasteners may be provided only on a portion of the sleeves 22 when the plurality of adjustment units are adjusted together, and the fasteners may be provided on each sleeve 22 when each adjustment unit is adjusted individually. Of course, other structures may be used to limit the sleeve 22 to the position, for example, fixing the sleeve connector 25 to the nozzle body 1 may be used to fix the position of the adjusting body 21.
In one embodiment, as shown in fig. 1 and 2, the nozzle body 1 further includes a first end cap 12, the first end cap 12 is provided with a plurality of mounting holes 121 corresponding to the micro-mixing tubes 11, and one ends of the plurality of micro-mixing tubes 11 having outlets are respectively inserted into the mounting holes 121 to be mounted to the first end cap 12.
As shown in fig. 3 and 4, the chute 111 is provided to extend to the end of the micro-mixing tube 11 having the outlet, and the first end cap 12 can limit the range in which the sleeve 22 can slide toward the outlet after being mounted with the micro-mixing tube 11.
Fig. 8 shows the first end cap 12 in an embodiment, wherein the inner wall of the mounting hole 121 of the first end cap 12 is provided with a limit protrusion 122, and the limit protrusion 122 is used for being matched with the sliding groove 111 on the micro-mixing tube 11 to limit the rotation of the micro-mixing tube 11.
The nozzle body 1 may further include a second end cap 13 and an outer Zhou Keti 14, the second end cap 13 is installed at an end of the micro-mixing tube 11 remote from the first end cap 12, the outer Zhou Keti is disposed around the plurality of micro-mixing tubes 11, and both ends of the outer Zhou Keti 14 are connected to the first end cap 12 and the second end cap 13, respectively. Thus, the first end cap 12, the second end cap 13, and the outer peripheral casing 14 form a casing of the nozzle, in which the micro-mixing tube 11, the sleeve 22, and the like are accommodated.
Embodiments of the present application also provide a burner comprising at least one micro-mixing nozzle as described above.
Embodiments of the present application also provide a gas turbine comprising a combustor as described above.
In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element body being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "first," "second," etc. can include at least one such feature, either explicitly or implicitly.
In the description of the present application, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and for example, "connected" may be either fixedly connected or detachably connected or integrally formed, mechanically connected or electrically connected, directly connected or indirectly connected via an intermediate medium, or may be a communication between two bodies or an interaction relationship between two bodies, unless explicitly specified otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present application, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the direct contact of the first and second features, or the indirect contact of the first and second features through an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
While embodiments of the present application have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the application, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the application.