Gas turbine deicing heating nozzle structure and gas turbine deicing system

Abstract

The invention provides a gas turbine deicing heating spray head structure and a gas turbine deicing system, and relates to the technical field of gas turbine deicing. An air cavity is formed in a nozzle component, the nozzle component is connected with a nozzle base, and the air cavity communicates with an air pipe assembly through a communicating hole in the nozzle base; hot air in the air pipe assembly enters the air cavity through the communicating hole and is sprayed out through the air outlet holes distributed in the quincunx shape, airflow is helped to be evenly diffused, secondary noise caused by concentrated impact of the airflow is reduced, and the air outlet holes can guarantee that final outlet cut-off pressures of the sprayers at different positions are the same. The technical problem that in the prior art, the span of a filtering chamber in a deicing system arranged on a gas turbine is large, the edge pressure attenuation effect can occur, and consequently the flow speed and flow of a far-end spray head cannot meet the requirement is solved.

Description

Technical Field

[0001] The invention relates to the technical field of gas turbine deicing, and in particular to a gas turbine deicing heating nozzle structure and a gas turbine deicing system. Background Art

[0002] With the development of society, gas turbines are put into use on a large scale, which puts higher requirements on the auxiliary system of gas turbines. In order to ensure the service life of gas turbine filters, in cities where the temperature in winter reaches below freezing, deicing systems are usually equipped to heat the intake air using the high-temperature gas discharged by the gas turbine, thereby preventing the filter element from freezing and the compressor blades from freezing, and extending the service life.

[0003] However, since the gas source is the gas source drawn from the gas turbine and the span of the entire filter chamber is large, there will be an edge pressure attenuation effect, resulting in the flow rate of the remote nozzle not meeting the requirements. In addition, since the injection noise of the heating nozzle is large, the heating nozzle needs to be silenced. Summary of the invention

[0004] The purpose of the present invention is to provide a gas turbine deicing heating nozzle structure and a gas turbine deicing system to alleviate the technical problem in the prior art that the filter chamber in the deicing system equipped with the gas turbine turbine has a large span, there will be an edge pressure attenuation effect, and the flow rate of the remote nozzle cannot meet the requirements.

[0005] The combustion engine deicing heating nozzle structure provided by the present invention comprises: a nozzle component and a nozzle base;

[0006] The nozzle member and the nozzle base are connected to each other;

[0007] An air cavity is formed inside the nozzle component, and the nozzle component has a plurality of air outlet holes, and the plurality of air outlet holes are all connected to the air cavity, and the plurality of air outlet holes are arranged in a plum blossom shape;

[0008] The nozzle base is configured to be connectable to an air pipe assembly, and the nozzle base has a plurality of communication holes, and the communication holes are used to connect the air cavity with the air pipe assembly.

[0009] In an alternative embodiment,

[0010] The nozzle component includes a nozzle side wall, a nozzle end face and a nozzle end cover;

[0011] The nozzle side wall is configured as a cylindrical structure, and the nozzle end surface and the nozzle end cover respectively block the two end openings of the nozzle side surface;

[0012] A plurality of the air outlet holes are arranged on the side wall of the nozzle;

[0013] The nozzle end cover has a mounting hole, and the nozzle base extends into the mounting hole and is connected to the nozzle end cover.

[0014] In an alternative embodiment,

[0015] The plurality of air outlet holes include a first row of holes and a second row of holes;

[0016] The plurality of first row holes and the plurality of second row holes are evenly spaced and alternately arranged along the length direction of the nozzle side wall, and the first row holes and the second row holes are staggered to form a plum blossom arrangement.

[0017] In an alternative embodiment,

[0018] The plurality of air outlet holes are located in a third region of the nozzle side wall close to the nozzle end surface.

[0019] In an alternative embodiment,

[0020] The plurality of communicating holes are arranged in a circumferential pattern, and a center line connecting the plurality of communicating holes is located at a position close to one third of the outer circumference of the nozzle base in a radial direction.

[0021] In an alternative embodiment,

[0022] The aperture size of the air outlet hole is 0.75 times the aperture size of the connecting hole.

[0023] In an alternative embodiment,

[0024] The combustion engine deicing heating nozzle structure also includes a steel wire mesh;

[0025] The steel wire mesh is arranged in the air cavity, and the steel wire mesh is arranged as a mesh structure for absorbing part of the energy of the airflow.

[0026] In a second aspect, the present invention provides a combustion engine deicing system, comprising an air pipe assembly and the combustion engine deicing heating nozzle structure;

[0027] The air pipe assembly includes an air intake manifold and a plurality of air intake branches;

[0028] The plurality of intake branch pipes are all connected to the intake main pipe, and the intake main pipe is evenly spaced and provided with a plurality of the combustion engine deicing heating nozzle structures;

[0029] A plurality of the combustion engine deicing heating nozzle structures are evenly spaced on each of the intake branch pipes, and the combustion engine deicing heating nozzle structures on two adjacent intake branch pipes are staggered.

[0030] In an alternative embodiment,

[0031] The intake manifold and the intake branch pipe are both provided with mounting joints;

[0032] The mounting adapter is configured to be threadably coupled to the nozzle base.

[0033] In an alternative embodiment,

[0034] The nozzle base has an external thread section that can be threadedly connected to the mounting joint, and the outer diameter of the external thread section gradually decreases along an end away from the nozzle component.

[0035] The de-icing heating nozzle structure of the gas turbine provided by the present invention forms an air cavity inside the nozzle component, and the nozzle component and the nozzle base are connected to each other, so that the air cavity is connected with the air pipe assembly through the connecting hole on the nozzle base. The hot air in the air pipe assembly enters the air cavity through the connecting hole, and is ejected through the air outlet holes arranged in a plum blossom shape, which helps the airflow to diffuse evenly and reduces the secondary noise caused by the concentrated impact of the airflow. The air outlet holes can ensure that the final outlet cut-off pressure of the nozzles at different positions is the same, which alleviates the technical problem in the prior art that the filter chamber in the de-icing system equipped with the gas turbine is large in span, there will be an edge pressure attenuation effect, and the flow rate of the remote nozzle cannot meet the requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0037] Figure 1 A schematic diagram of the overall structure of a combustion engine deicing heating nozzle structure provided by an embodiment of the present invention;

[0038] Figure 2 A schematic diagram of the overall structure of the combustion engine deicing heating nozzle structure provided by an embodiment of the present invention from another perspective;

[0039] Figure 3 A schematic diagram of the arrangement of the connecting holes of the nozzle base in the combustion engine deicing heating nozzle structure provided by an embodiment of the present invention;

[0040] Figure 4 A schematic structural diagram of a nozzle base in a combustion engine deicing heating nozzle structure provided by an embodiment of the present invention;

[0041] Figure 5 A schematic diagram of the overall structure of a gas turbine deicing system provided by an embodiment of the present invention;

[0042] Figure 6A partially enlarged schematic diagram of a combustion engine deicing system provided in an embodiment of the present invention.

[0043] Icons: 100-nozzle component; 110-nozzle side wall; 111-air outlet; 120-nozzle end face; 130-nozzle end cover; 131-mounting hole; 200-nozzle base; 210-connecting hole; 220-external thread section; 300-air pipe assembly; 310-intake manifold; 320-intake branch pipe; 330-mounting joint; DETAILED DESCRIPTION

[0044] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0046] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0047] The specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present invention, and is not used to limit the present invention.

[0048] like Figure 1 , Figure 2As shown, the deicing heating nozzle structure of the combustion engine provided in this embodiment includes: a nozzle component 100 and a nozzle base 200; the nozzle component 100 and the nozzle base 200 are connected to each other; the nozzle component 100 is a cylindrical structure, which is hollow inside and has an air cavity. The nozzle component 100 has a plurality of air outlet holes 111, and the plurality of air outlet holes 111 are all connected to the air cavity. The hot gas in the air cavity is discharged through the plurality of air outlet holes 111. The plurality of air outlet holes 111 are arranged in a plum blossom shape to make the jet more uniform. The nozzle base 200 is configured to be connected to the air pipe assembly 300. The nozzle base 200 has a plurality of connecting holes 210. The connecting holes 210 are used to connect the air cavity with the air pipe assembly 300. After the nozzle base 200 is connected to the air pipe assembly 300, the gas in the air pipe assembly 300 enters the nozzle base 200, enters the air cavity through the connecting holes 210, and is then discharged through the air outlet holes 111.

[0049] Furthermore, the nozzle component 100 includes a nozzle side wall 110, a nozzle end face 120 and a nozzle end cover 130; the nozzle side wall 110 is configured as a cylindrical structure, with openings at both ends of the nozzle side wall 110, the nozzle end face 120 is a blocking face, the nozzle end face 120 and the nozzle end cover 130 respectively block the openings at both ends of the nozzle side; a plurality of air outlet holes 111 are provided on the nozzle side wall 110; the nozzle end cover 130 has a mounting hole 131, the nozzle base 200 extends into the mounting hole 131 and is connected to the nozzle end cover 130, thereby connecting the nozzle base 200 and the nozzle component 100 as a whole.

[0050] Furthermore, the multiple air outlet holes 111 include a first row of holes and a second row of holes; the multiple first row of holes and the multiple second row of holes are evenly spaced along the length direction of the nozzle side wall 110, and the multiple first row of holes and the multiple second row of holes are staggered, that is, the multiple air outlet holes 111 arranged in the same circumferential direction close to the nozzle end face 120 are the first row of holes, and the multiple air outlet holes 111 arranged in another circumferential direction adjacent to the first row of holes are the second row of holes, and the first row of holes and the second row of holes are staggered to form a plum blossom arrangement, so that the gas ejection is more uniform.

[0051] Furthermore, the plurality of air outlet holes 111 are located in a third region of the nozzle side wall 110 close to the nozzle end surface 120 .

[0052] Specifically, there are four connecting holes 210, which are evenly arranged along the circumferential direction and have a diameter of 4 mm. The connecting holes 210 can ensure that the final outlet cut-off pressure of the nozzles at different positions is the same. The connection holes 210 close to one-third of the outer circle can help the airflow to diffuse evenly and reduce the secondary noise caused by the concentrated impact of the airflow.

[0053] like Figure 3 , Figure 4As shown, further, the multiple connecting holes 210 are arranged in a circle, and the center line of the multiple connecting holes 210 is located at the radial direction of the nozzle base 200 close to one-third of the outer circumference; the aperture size of the air outlet hole 111 is 0.75 times the aperture size of the connecting hole 210.

[0054] Specifically, the aperture of the air outlet 111 is 0.75 times the aperture of the connecting hole 210, i.e. 3 mm, and is evenly distributed along the circumference. There is a single-hole staggered arrangement between two adjacent circles of holes, i.e. a plum blossom-shaped arrangement. The first seven holes are distributed in the front third of the nozzle. The noise generated by the airflow is silenced secondary to the spray through the air outlet 111, and the airflow outlet flow velocity is controlled, thereby reducing the noise level without affecting the airflow spray range.

[0055] By controlling the apertures and the number of the air outlet holes 111 and the connecting holes 210 , a fixed cut-off pressure can be achieved at a constant flow rate required by the project.

[0056] Furthermore, the gas turbine deicing heating nozzle structure also includes a wire mesh; the wire mesh is arranged in the air cavity, and the wire mesh is arranged as a mesh structure for absorbing part of the energy of the airflow.

[0057] Specifically, the jet airflow is disturbed and silenced by a dense steel wire mesh, so that the airflow is evenly sprayed at the final outlet and the noise is reduced to a required range.

[0058] The density of the wire mesh is 0.4kg / m 3 The oblique embossed pattern ensures that the high-speed airflow is evenly diffused when it is discharged, and part of the energy of the airflow will be absorbed by the mesh structure during the flushing process in the wire mesh, which has a sound-absorbing effect.

[0059] The de-icing heating nozzle structure for a gas turbine provided in the present embodiment forms an air cavity inside the nozzle component 100, and the nozzle component 100 is interconnected with the nozzle base 200, so that the air cavity is connected with the air pipe assembly 300 through the connecting hole 210 on the nozzle base 200. The hot air in the air pipe assembly 300 enters the air cavity through the connecting hole 210, and is ejected through the air outlet holes 111 arranged in a plum blossom shape, which helps the airflow to diffuse evenly and reduces the secondary noise caused by the concentrated impact of the airflow. The air outlet holes 111 can ensure that the final outlet cut-off pressure of the nozzles at different positions is the same, which alleviates the technical problem in the prior art that the filter chamber in the de-icing system equipped with the gas turbine has a large span, there will be an edge pressure attenuation effect, and the flow rate of the remote nozzle cannot meet the requirements.

[0060] Based on the above embodiments, Figure 5 , Figure 6As shown, the gas engine deicing system provided in this embodiment includes an air pipe assembly 300 and a gas engine deicing heating nozzle structure; the air pipe assembly 300 includes an air intake manifold 310 and a plurality of air intake branch pipes 320; the plurality of air intake branch pipes 320 are all connected to the air intake manifold 310, and the plurality of air intake branch pipes 320 are evenly spaced along the length direction of the air intake manifold 310, and the air intake manifold 310 is evenly spaced with a plurality of gas engine deicing heating nozzle structures; each air intake branch pipe 320 is evenly spaced with a plurality of gas engine deicing heating nozzle structures, and the gas engine deicing heating nozzle structures on two adjacent air intake branch pipes 320 are staggeredly arranged to ensure uniformity of gas ejection.

[0061] Furthermore, both the intake manifold 310 and the intake branch pipe 320 are provided with mounting joints 330 ; the mounting joints 330 are configured to be threadedly connected to the nozzle base 200 .

[0062] Furthermore, the nozzle base 200 has an external thread section 220 that can be threadedly connected to the mounting joint 330 , and the outer diameter of the external thread section 220 gradually decreases along an end away from the nozzle component 100 .

[0063] Specifically, the inner wall of the mounting joint 330 has an internal thread section, which cooperates with the external thread section 220 to realize the threaded connection between the nozzle base 200 and the mounting joint 330, and the internal thread section is correspondingly reduced, that is, the inner diameter of the internal thread section gradually decreases in the direction away from the nozzle base 200, forming an NPT threaded connection form, realizing the mechanical sealing of the structure and preventing air leakage.

[0064] The gas turbine deicing system provided in this embodiment can achieve mechanical sealing of the structure to prevent air leakage; can achieve a fixed cut-off pressure under a constant flow rate required by the project; and can achieve uniform airflow injection at the final outlet position and reduce noise to within the required range.

[0065] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A combustion engine deicing heating nozzle structure, characterized in that: include: A nozzle member (100) and a nozzle base (200); The nozzle component (100) and the nozzle base (200) are connected to each other; An air cavity is formed inside the nozzle component (100), and the nozzle component (100) has a plurality of air outlet holes (111), the plurality of air outlet holes (111) are all connected to the air cavity, and the plurality of air outlet holes (111) are arranged in a plum blossom shape; The nozzle base (200) is configured to be connectable to an air pipe assembly (300), and the nozzle base (200) has a plurality of communication holes (210), and the communication holes (210) are used to connect the air cavity with the air pipe assembly (300).

2. The deicing heating nozzle structure for a combustion engine according to claim 1, characterized in that: The nozzle component (100) comprises a nozzle side wall (110), a nozzle end face (120) and a nozzle end cover (130); The nozzle side wall (110) is configured as a cylindrical structure, and the nozzle end surface (120) and the nozzle end cover (130) respectively block the openings at both ends of the nozzle side surface; A plurality of air outlet holes (111) are provided on the nozzle side wall (110); The nozzle end cover (130) has a mounting hole (131), and the nozzle base (200) extends into the mounting hole (131) and is connected to the nozzle end cover (130).

3. The deicing heating nozzle structure for a combustion engine according to claim 2 is characterized in that: The plurality of air outlet holes (111) include a first row of holes and a second row of holes; A plurality of the first row of holes and a plurality of the second row of holes are evenly spaced and alternately arranged along the length direction of the nozzle side wall (110), and the first row of holes and the second row of holes are staggered to form a plum blossom arrangement.

4. The combustion engine deicing heating nozzle structure according to claim 2 is characterized in that: The plurality of air outlet holes (111) are located in a third region of the nozzle side wall (110) close to the nozzle end surface (120).

5. The combustion engine deicing heating nozzle structure according to claim 4 is characterized in that: The plurality of communication holes (210) are arranged in a circumferential pattern, and a center line connecting the plurality of communication holes (210) is located at a position close to one third of the outer circumference of the nozzle base (200) in a radial direction.

6. The combustion engine deicing heating nozzle structure according to claim 5, characterized in that: The aperture size of the air outlet hole (111) is 0.75 times the aperture size of the connecting hole (210).

7. The combustion engine deicing heating nozzle structure according to any one of claims 1 to 6, characterized in that: The combustion engine deicing heating nozzle structure also includes a steel wire mesh; The steel wire mesh is arranged in the air cavity, and the steel wire mesh is arranged as a mesh structure for absorbing part of the energy of the airflow.

8. A combustion engine deicing system, characterized in that: It comprises an air pipe assembly (300) and a combustion engine deicing heating nozzle structure as claimed in any one of claims 1 to 7; The air pipe assembly (300) comprises an air intake manifold (310) and a plurality of air intake branch pipes (320); The plurality of intake branch pipes (320) are all in communication with the intake main pipe (310), and the intake main pipe (310) is evenly spaced with a plurality of the combustion engine deicing heating nozzle structures; A plurality of the combustion engine deicing heating nozzle structures are evenly spaced on each of the intake branch pipes (320), and the combustion engine deicing heating nozzle structures on two adjacent intake branch pipes (320) are arranged in a staggered manner.

9. The combustion engine deicing system according to claim 8, characterized in that: The intake manifold (310) and the intake branch pipe (320) are both provided with mounting joints (330); The mounting joint (330) is configured to be threadably connected to the nozzle base (200).

10. The combustion engine deicing system according to claim 9, characterized in that: The nozzle base (200) has an external thread section (220) capable of being threadedly connected to the mounting joint (330), and the outer diameter of the external thread section (220) gradually decreases along an end away from the nozzle component (100).

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