Fuel atomizing nozzle with multi-stage rotational flow cavity

Abstract

The utility model discloses a fuel atomizing nozzle with a multistage rotational flow cavity, which belongs to the technical field of atomizing nozzles, and comprises a connecting cover, a mixing cavity fixedly connected with the upper end of the connecting cover, a gas inlet arranged on the outer surface of the mixing cavity, a fuel inlet arranged on the upper end of the mixing cavity, and a gas outlet arranged on the lower end of the mixing cavity. The lower end of the connecting cover is fixedly connected with a multi-stage structure, multi-stage rotational flow cutting is formed through a splitter plate, a splitter piece and a rotational flow core of the first-stage cavity assembly in combination with a flow guide ring, a rotating blade and a flow guide piece of the second-stage cavity assembly and a nozzle seat and a paddle of the third-stage cavity assembly, the centrifugal force of fuel is remarkably improved, atomized particles are finer and evenly distributed, and the fuel efficiency is improved. Fuel can be guided to form a spiral flowing path in the multiple cavities, secondary mixing is enhanced, sufficient mixing of the fuel and combustion-supporting air is achieved, the incomplete combustion risk is reduced, the function that the multiple cavities are matched to sufficiently atomize the fuel can be achieved, and the practicability of the atomizing nozzle is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to atomizing nozzle technical field more specifically, relate to a kind of fuel atomizing nozzle with multistage cyclone cavity. BACKGROUND

[0002] Nozzle is one of the most important components in combustion equipment. Liquid fuel combustion generally uses nozzle, and the design of nozzle has a great influence on liquid fuel combustion. The function of nozzle is to atomize liquid fuel, form liquid mist with very small diameter, increase the contact area of liquid fuel and surrounding medium, and achieve the purpose of rapid evaporation, mixing and combustion.

[0003] Chinese patent authorized announcement No. CN219483047U provides a cyclone type atomizing nozzle device. The scheme sets a liquid distribution chamber concentrically at the lower part of the nozzle body and a cyclone chamber perpendicular to the center line of the nozzle body at the upper part. The liquid distribution chamber and the cyclone chamber are connected by tangential holes, so that the liquid entering direction and the spraying direction form a 90° angle, achieving the purpose of liquid deflection. The inside of the film forming chamber is a conical structure, and the end of the conical structure is processed with a liquid outlet hole. This design makes the deflected liquid form a water film in the conical structure. Only relying on liquid pressure, the liquid is accelerated to form a tangential rotating liquid film, which is sprayed out in a high-speed rotating state after passing through the liquid outlet hole. However, there are still the following defects in the specific implementation process: the device only relies on liquid pressure for one-time cyclone, which may not provide sufficient centrifugal force to the liquid, affecting the spraying effect and resulting in poor atomization effect.

[0004] Therefore, a fuel atomizing nozzle with multistage cyclone cavity is proposed to solve the above problems. UTILITY MODEL CONTENTS

[0005] 1. Technical problem to be solved

[0006] In view of the problems existing in the prior art, the purpose of the utility model is to provide a fuel atomizing nozzle with multistage cyclone cavity, which can realize the function of fully atomizing fuel by cooperating with multiple cavities.

[0007] 2. Technical scheme

[0008] To solve the above problems, the utility model adopts the following technical scheme.

[0009] The utility model provides a kind of fuel atomizing nozzle with multistage cyclone cavity, including connecting cover, the mixing cavity is fixedly connected on the upper end of the connecting cover, the outer surface of the mixing cavity is equipped with gas inlet, the upper end of the mixing cavity is equipped with fuel inlet, the lower end of the connecting cover is fixedly connected with multistage structure, the multistage structure includes primary cavity shell, the primary cavity shell is fixedly connected with the lower end of connecting cover upper end, the lower end of the primary cavity shell is fixedly connected with secondary cavity assembly, the lower part of the secondary cavity assembly is fixedly connected with tertiary cavity assembly, the lower part of the tertiary cavity assembly is fixedly connected with nozzle cover pipe, the inside of the tertiary cavity assembly is fixedly connected with connecting shaft, the outer surface of the connecting shaft is fixedly connected with primary cavity assembly.

[0010] Further, the primary cavity assembly includes connecting pipe one, the outer surface of the connecting pipe one is fixedly connected with shunt plate, the outer surface of the shunt plate is fixedly connected with a plurality of shunt pieces, the upper end of the shunt plate is fixedly connected with a plurality of shunt strips, the upper end of the connecting pipe one is fixedly connected with cyclone core.

[0011] Further, the secondary cavity assembly includes secondary cavity shell, the upper end of the secondary cavity shell is fixedly connected with the lower end of primary cavity shell, the inner surface of the secondary cavity shell is fixedly connected with flow guide ring, the outer surface of the flow guide ring is slidably connected with rotating vane, the inner surface of the rotating vane is fixedly connected with connecting pipe two, the inner surface of the connecting pipe two is fixedly connected with the outer surface of connecting shaft through bearing, the inner surface of the secondary cavity shell is fixedly connected with flow guide plate, the inner surface of the flow guide plate is fixedly connected with a plurality of flow guide pieces.

[0012] Further, the tertiary cavity assembly includes connecting plate, the lower end of the connecting plate is fixedly connected with the upper end of nozzle cover pipe, the upper end of the connecting plate is fixedly connected with tertiary cavity shell, the inner surface of the connecting plate is fixedly connected with connecting frame, the inner surface of the connecting frame is rotatably connected with the outer surface of connecting shaft, the upper end of the connecting frame is provided with nozzle seat, the inner surface of the nozzle seat is fixedly connected with the outer surface of connecting shaft through bearing, the outer surface of the nozzle seat is fixedly connected with paddle, the lower end of the connecting frame is fixedly connected with nozzle head.

[0013] Further, the upper end of the secondary cavity shell is fixedly connected with the lower end of primary cavity shell, and the lower end of the secondary cavity shell is fixedly connected with the upper end of tertiary cavity shell.

[0014] Further, the inner surface of the connecting pipe one is fixedly connected with the outer surface of connecting shaft through bearing, and the inner surface of the cyclone core is fixedly connected with the outer surface of connecting shaft.

[0015] 3. Beneficial effects

[0016] Compared with the prior art, the utility model has the advantages that:

[0017] The multi-stage structure can multi-stage cyclone when atomizing the fuel, greatly improves the atomization effect of the fuel, multi-stage cyclone cutting is formed by the splitter plate, splitter piece and cyclone core of the primary cavity assembly, the flow guide ring, rotating blade and flow guide piece of the secondary cavity assembly, and the nozzle seat and paddle of the tertiary cavity assembly, the centrifugal force of the fuel is significantly improved, the atomized particles are finer and more uniform, the contact area of the fuel and air is increased, the combustion efficiency is promoted, the fuel can be guided to form a spiral flow path in multiple cavities, secondary mixing is strengthened, sufficient mixing of the fuel and combustion air is realized, the risk of incomplete combustion is reduced, and the practicability of the atomizing nozzle is improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a whole structure schematic view of the utility model;

[0019] Figure 2 It is a multi-stage structure schematic view of the utility model;

[0020] Figure 3 It is a primary cavity assembly schematic view of the utility model;

[0021] Figure 4 It is a secondary cavity assembly schematic view of the utility model;

[0022] Figure 5 It is a tertiary cavity assembly schematic view of the utility model.

[0023] Mark explanation in drawing:

[0024] 1, connecting cover, 2, mixing cavity, 3, gas inlet, 4, fuel inlet, 5, multi-stage structure, 51, primary cavity shell, 52, secondary cavity assembly, 521, secondary cavity shell, 522, flow guide ring, 523, rotating blade, 524, connecting pipe two, 525, flow guide plate, 526, flow guide piece, 53, tertiary cavity assembly, 531, connecting plate, 532, tertiary cavity shell, 533, connecting frame, 534, nozzle seat, 535, paddle, 536, nozzle head, 54, nozzle cover pipe, 55, connecting shaft, 56, primary cavity assembly, 561, connecting pipe one, 562, splitter plate, 563, splitter piece, 564, splitter strip, 565, cyclone core. DETAILED DESCRIPTION

[0025] The technical scheme in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model; Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments, based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the protection scope of the utility model.

[0026] In the description of the utility model, it needs to explain, the term "upper", "lower", "internal", "external", "top / bottom end" and so on indicate the orientation or positional relationship is based on the orientation or positional relationship shown in the drawing, only for the convenience of describing the utility model and simplifying the description, and not indicate or imply that the device or element must have a particular orientation, a particular orientation and operation, therefore cannot be understood as a limitation on the utility model. In addition, the term "first", "second" is only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0027] In the description of the utility model, it needs to explain, unless otherwise expressly provided and limited, the terms "installation", "provided with", "sleeved / connected", "connection" and so on should be understood broadly, for example, "connection", can be fixed connection, can also be detachable connection, or integrally connected, can be mechanical connection, can also be electrical connection, can be directly connected, can also be indirectly connected through intermediate medium, can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0028] Embodiment:

[0029] Please refer to Figures 1-5 A kind of fuel atomizing nozzle with multi-stage cyclone cavity, including connecting cover 1, connecting cover 1 upper end fixedly connected with mixing chamber 2, gas inlet 3 is opened in the outer surface of mixing chamber 2, fuel inlet 4 is opened in the upper end of mixing chamber 2, connecting cover 1 lower end fixedly connected with multi-stage structure 5, multi-stage structure 5 includes one-stage cavity shell 51, one-stage cavity shell 51 upper end is fixedly connected with the lower end of connecting cover 1, one-stage cavity shell 51 lower end is fixedly connected with two-stage cavity assembly 52, two-stage cavity assembly 52 lower part is fixedly connected with three-stage cavity assembly 53, three-stage cavity assembly 53 lower part is fixedly connected with nozzle cover pipe 54, three-stage cavity assembly 53 inside is fixedly connected with connecting shaft 55, connecting shaft 55 outer surface is fixedly connected with one-stage cavity assembly 56.

[0030] The scheme realizes preliminary gas-liquid mixing by injecting fuel from fuel inlet 4 into mixing chamber 2 and injecting combustion-supporting gas from gas inlet 3 into mixing chamber 2 at the same time, carries out multi-stage cyclone on the mixed fuel by multi-stage structure 5, can carry out initial cyclone cutting by one-stage cavity assembly 56, can adjust fuel flow direction by two-stage cavity assembly 52, further accelerates fuel cyclone, can carry out final atomization and injection by three-stage cavity assembly 53, so that fuel can be stably injected at an angle under the cooperation of multi-stage cyclone and nozzle cover pipe 54, and uniform mist torch is formed.

[0031] Please refer to Figures 2-5The primary cavity assembly 56 comprises a connecting pipe I 561, the inner surface of the connecting pipe I 561 is fixedly connected with the outer surface of the connecting shaft 55 through a bearing, the outer surface of the connecting pipe I 561 is fixedly connected with a shunt plate 562, the outer surface of the shunt plate 562 is fixedly connected with a plurality of shunt pieces 563, the upper end of the shunt plate 562 is fixedly connected with a plurality of shunt strips 564, the upper end of the connecting pipe I 561 is fixedly connected with a cyclone core 565, and the inner surface of the cyclone core 565 is fixedly connected with the outer surface of the connecting shaft 55.

[0032] The secondary cavity assembly 52 comprises a secondary cavity shell 521, the lower end of the secondary cavity shell 521 is fixedly connected with the upper end of the tertiary cavity shell 532, the upper end of the secondary cavity shell 521 is fixedly connected with the lower end of the primary cavity shell 51, the inner surface of the secondary cavity shell 521 is fixedly connected with a flow guide ring 522, the outer surface of the flow guide ring 522 is slidingly connected with a rotating blade 523, the inner surface of the rotating blade 523 is fixedly connected with a connecting pipe II 524, the inner surface of the connecting pipe II 524 is fixedly connected with the outer surface of the connecting shaft 55 through a bearing, the inner surface of the secondary cavity shell 521 is fixedly connected with a flow guide plate 525, and the inner surface of the flow guide plate 525 is fixedly connected with a plurality of flow guide pieces 526.

[0033] The tertiary cavity assembly 53 comprises a connecting plate 531, the lower end of the connecting plate 531 is fixedly connected with the upper end of the nozzle cover pipe 54, the upper end of the connecting plate 531 is fixedly connected with a tertiary cavity shell 532, the inner surface of the connecting plate 531 is fixedly connected with a connecting frame 533, the inner surface of the connecting frame 533 is rotatably connected with the outer surface of the connecting shaft 55, the upper end of the connecting frame 533 is provided with a nozzle seat 534, the inner surface of the nozzle seat 534 is fixedly connected with the outer surface of the connecting shaft 55 through a bearing, the outer surface of the nozzle seat 534 is fixedly connected with a paddle 535, and the lower end of the connecting frame 533 is fixedly connected with a nozzle head 536.

[0034] In the scheme, the fuel after mixing can be divided into multiple streams by the flow distribution plate 562 through the flow distribution piece 563, the flow distribution strip 564 guides the fuel into the rotational flow core 565 to form the primary rotational flow cutting, under the action of centrifugal force, the fuel will fall from the hole of the flow distribution strip 564 or along the flow distribution piece 563, just fall on the flow guide plate 525, and enter the secondary cavity shell 521 inside along the flow guide plate 525, after the fuel enters the secondary cavity shell 521, the flow guide ring 522 and the flow guide piece 526 cooperate to adjust the fuel flow direction, the rotational blade 523 rotates with the connecting shaft 55 to further accelerate the fuel rotational flow, and the secondary cavity shell 521 cooperates with the flow guide plate 525 to make the nozzle gradually narrow, so that the rotational flow can provide greater centrifugal force, after the fuel completes the secondary rotational flow, will continue to fall, when the fuel enters the tertiary cavity shell 532, the paddle 535 rotates at high speed with the connecting shaft 55, and will again dye the fuel to perform vortex cutting, so that the droplet diameter is reduced to the micron level, the nozzle head 536 sprays the atomized fuel in a diffusion shape, cooperates with the nozzle cover pipe 54 to stabilize the jet angle, and forms a uniform mist torch, so that the purpose of improving the fuel atomization effect by multiple stages is achieved.

[0035] It should be noted that the specific installation method and control method of the rotational flow core 565, the flow guide plate 525, the nozzle head 536 and the flow distribution plate 562 in the utility model all belong to conventional design, and the utility model will not be described in detail.

[0036] Working principle: when the atomizing nozzle is used to atomize fuel, the fuel is injected into the mixing chamber 2 from the fuel inlet 4, and the combustion-supporting gas is also injected into the mixing chamber 2 from the gas inlet 3, so as to realize preliminary gas-liquid mixing.

[0037] The fuel after mixing can be divided into multiple streams by the flow distribution plate 562 and the flow distribution piece 563, the flow distribution strip 564 guides the fuel into the rotational flow core 565 to form the primary rotational flow cutting, under the action of centrifugal force, the fuel will fall from the hole of the flow distribution strip 564 or along the flow distribution piece 563, just fall on the flow guide plate 525, the rotational blade 523 rotates with the connecting shaft 55 to further accelerate the fuel rotational flow, and perform secondary rotational flow cutting, and the secondary cavity shell 521 cooperates with the flow guide plate 525 to make the nozzle gradually narrow, so that the rotational flow can provide greater centrifugal force, after the fuel completes the secondary rotational flow, will continue to fall, when the fuel enters the tertiary cavity shell 532, the paddle 535 rotates at high speed with the connecting shaft 55, and will again dye the fuel to perform vortex cutting, so that the droplet diameter is reduced to the micron level, the nozzle head 536 sprays the atomized fuel in a diffusion shape, cooperates with the nozzle cover pipe 54 to stabilize the jet angle, and forms a uniform mist torch.

[0038] The above merely is a preferred specific implementation manner of the present application; however, the protection scope of the present application is not limited thereto. Any person skilled in the art, within the technical range disclosed by the present application, according to the technical scheme and improvement concept of the present application, makes equivalent replacement or change, should be covered in the protection scope of the present application.

Claims

1. A fuel atomizing nozzle with multi-stage rotational flow chamber, comprising a connecting cover (1), characterized in that: The connecting cover (1) upper end is fixedly connected with the mixing cavity (2), the mixing cavity (2) outer surface is provided with gas inlet (3), the mixing cavity (2) upper end is provided with fuel inlet (4), the connecting cover (1) lower end is fixedly connected with multistage structure (5), the multistage structure (5) includes primary cavity shell (51), the primary cavity shell (51) upper end is fixedly connected with the connecting cover (1) lower end, the primary cavity shell (51) lower end is fixedly connected with secondary cavity assembly (52), the secondary cavity assembly (52) lower part is fixedly connected with tertiary cavity assembly (53), the tertiary cavity assembly (53) lower part is fixedly connected with shower nozzle cover pipe (54), the tertiary cavity assembly (53) inside is fixedly connected with connecting shaft (55), the connecting shaft (55) outer surface is fixedly connected with primary cavity assembly (56).

2. The fuel atomizing nozzle with multi-stage rotational flow cavities according to claim 1, characterized in that: The primary cavity assembly (56) includes connecting pipe one (561), the connecting pipe one (561) outer surface is fixedly connected with shunt plate (562), the shunt plate (562) outer surface is fixedly connected with a plurality of shunt pieces (563), the shunt plate (562) upper end is fixedly connected with a plurality of shunt strips (564), the connecting pipe one (561) upper end is fixedly connected with cyclone core (565).

3. The fuel atomizing nozzle with multi-stage rotational flow cavities according to claim 1, characterized in that: The secondary cavity assembly (52) includes secondary cavity shell (521), the secondary cavity shell (521) inner surface is fixedly connected with flow guide ring (522), the flow guide ring (522) outer surface is slidably connected with rotating blade (523), the rotating blade (523) inner surface is fixedly connected with connecting pipe two (524), the connecting pipe two (524) inner surface and the connecting shaft (55) outer surface are fixedly connected through bearing, the secondary cavity shell (521) inner surface is fixedly connected with flow guide plate (525), the flow guide plate (525) inner surface is fixedly connected with a plurality of flow guide pieces (526).

4. The fuel atomizing nozzle with multi-stage rotational flow cavities according to claim 3, characterized in that: The tertiary cavity assembly (53) includes connecting plate (531), the connecting plate (531) lower end is fixedly connected with the shower nozzle cover pipe (54) upper end, the connecting plate (531) upper end is fixedly connected with tertiary cavity shell (532), the connecting plate (531) inner surface is fixedly connected with connecting frame (533), the connecting frame (533) inner surface and the connecting shaft (55) outer surface are rotatably connected, the connecting frame (533) upper end is provided with nozzle seat (534), the nozzle seat (534) inner surface and the connecting shaft (55) outer surface are fixedly connected through bearing, the nozzle seat (534) outer surface is fixedly connected with paddle (535), the connecting frame (533) lower end is fixedly connected with nozzle head (536).

5. The fuel atomizing nozzle with multi-stage rotational flow cavities according to claim 4, characterized in that: The secondary cavity shell (521) upper end is fixedly connected with the primary cavity shell (51) lower end, the secondary cavity shell (521) lower end is fixedly connected with the tertiary cavity shell (532) upper end.

6. The fuel atomizing nozzle with multi-stage rotational flow cavities according to claim 2, characterized in that: The connecting pipe one (561) inner surface and the connecting shaft (55) outer surface are fixedly connected through bearing, the cyclone core (565) inner surface and the connecting shaft (55) outer surface are fixedly connected.

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