CN210033665U

CN210033665U - Jet flow guide pipe

Info

Publication number: CN210033665U
Application number: CN201920691732.8U
Authority: CN
Inventors: 李伟
Original assignee: China Shipbuilding Power Engineering Institute Co Ltd
Current assignee: China Shipbuilding Power Engineering Institute Co Ltd
Priority date: 2019-05-15
Filing date: 2019-05-15
Publication date: 2020-02-07
Anticipated expiration: 2029-05-15

Abstract

The utility model relates to the technical field of flow guide, and discloses a jet flow guide pipe, which comprises a mounting plate and a flow guide pipe body, wherein one end of the flow guide pipe body is arranged on the mounting plate, and the flow guide pipe body comprises a first straight pipe, an arc-shaped pipe and a second straight pipe which are connected in sequence; and one end of the nozzle is connected with the other end of the flow guide pipe body, the nozzle is horn-shaped, the cross sectional area of one end connected with the flow guide pipe body is smaller than that of the other end of the flow guide pipe body, a flow divider is arranged in the nozzle, the flow divider and the nozzle form an annular outlet, a flow dividing plate is arranged at the other end of the flow guide pipe body, the annular outlet is divided into at least two flow dividing ports by the flow dividing plate, and gas can diffuse around through the flow dividing ports. The utility model discloses guide air current that can be fine sprays towards setting for the direction, prevents that gas from leaking to the opposite direction of injection direction, and the shunt that is located the nozzle can be effectual with gas to spouting all around to make gas and air rapid homogeneous mixing.

Description

Jet flow guide pipe

Technical Field

The utility model relates to a water conservancy diversion technical field especially relates to a spray honeycomb duct.

Background

With the increasing attention of people on preventing air pollution, gas engines are rapidly developed in recent years, gas supply of large-scale medium and low-speed engines mainly adopts an air inlet manifold injection mode, and an injection guide pipe is required to be installed at an injection outlet of each cylinder to guide gas injection. At present, an injection flow guide pipe is generally a straight pipe, a port adopts 45-degree beveling flow guide, the design can reduce the manufacturing cost, but the flow guide effect is poor, and the injected gas easily flows along the rear part of the beveling direction of the port, so that the gas leakage is caused.

SUMMERY OF THE UTILITY MODEL

Based on above, an object of the utility model is to provide a spray honeycomb duct, guide air current that can be fine sprays towards setting for the direction, has solved gaseous problem that causes the leakage toward the rear flow.

In order to achieve the purpose, the utility model adopts the following technical proposal:

an injection nozzle comprising:

the honeycomb duct comprises a mounting plate and a honeycomb duct body, wherein one end of the honeycomb duct body is arranged on the mounting plate, the honeycomb duct body comprises a first straight pipe, an arc-shaped pipe and a second straight pipe which are sequentially connected, and the included angle between the central axis of the first straight pipe and the central axis of the second straight pipe is 120-150 degrees; and

the nozzle, its one end with the other end of honeycomb duct body is connected, the nozzle be loudspeaker form and with the cross-sectional area of this body-connected one end of honeycomb duct is less than the cross-sectional area of its other end, be equipped with the shunt in the nozzle, the shunt with the nozzle forms annular outlet, the other end of honeycomb duct body is equipped with the flow distribution plate, the flow distribution plate will annular outlet is cut apart into two at least diffluence spouts, and gas can pass through the diffluence spout is to diffusion all around.

As a preferable scheme of the injection flow guide pipe, the arc-shaped pipe is an arc-shaped pipe with a central angle of 60 degrees, and an included angle between the central axis of the first straight pipe and the central axis of the second straight pipe is 120 degrees.

As a preferable scheme of the injection flow guide pipe, the flow divider is a conical flow divider.

As a preferable proposal of the injection flow guide pipe, the apex angle of the conical flow divider is 45-70 degrees.

As a preferable scheme of the jet flow guide pipe, an included angle between the central axis of the nozzle and the extension surface of the outer surface of the nozzle is smaller than half of the vertex angle of the conical flow divider.

As a preferable mode of the injection flow guide pipe, the flow guide pipe body is welded on the mounting plate.

As a preferable mode of the injection flow guide pipe, the first straight pipe, the arc pipe and the second straight pipe are integrally formed.

As a preferable scheme of the injection flow guide pipe, the flow distribution plate is welded on the flow guide pipe body.

The utility model has the advantages that: the utility model discloses guide air current that can be fine sprays towards setting for the direction, prevents that gas from leaking to the opposite direction of injection direction, and the shunt that is located the nozzle can be effectual with gas to spouting all around to make gas and air rapid homogeneous mixing.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.

Fig. 1 is a schematic view of an injection nozzle according to an embodiment of the present invention;

fig. 2 is a sectional view of an injection flow guide pipe according to an embodiment of the present invention.

In the figure:

the flow guide device comprises a mounting plate 1, a flow guide pipe body 2, a first straight pipe 21, an arc-shaped pipe 22, a second straight pipe 23, a nozzle 3, a flow divider 4, a flow dividing port 5 and a flow dividing plate 6.

Detailed Description

In order to make the technical problems, technical solutions and technical effects achieved by the present invention more clear, the embodiments of the present invention will be described in further detail with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments, not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection; 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 meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The present embodiment provides a spray nozzle guide, as shown in fig. 1 and 2, including a mounting plate 1, a nozzle body 2, a nozzle 3, and a flow distribution plate 6, wherein the flow distribution plate 6 is welded to an end surface of the nozzle 3. On mounting panel 1 was located to the one end of honeycomb duct body 2, honeycomb duct body 2 welded in on the mounting panel 1. Honeycomb duct body 2 is including the first straight tube 21, arc 22 and the second straight tube 23 that connect gradually, and the central axis of first straight tube 21 and the central axis's of second straight tube 23 contained angle is 120, and the arc 22 of this embodiment is 60 arc 22 for the central axis angle, and the central axis of first straight tube 21 and the central axis of second straight tube 23 all are tangent with the central axis of this arc 22, and first straight tube 21 the arc 22 reaches second straight tube 23 integrated into one piece. Of course, the included angle between the central axis of the first straight pipe 21 and the central axis of the second straight pipe 23 is not limited to 120 ° in this embodiment, and may be 120 ° to 150 ° besides 120 °, specifically according to actual needs.

The one end of this embodiment nozzle 3 is connected with honeycomb duct body 2's the other end, and nozzle 3 is the cross-sectional area that the one end that trumpet-shaped and nozzle 3 and honeycomb duct body 2 are connected is less than the cross-sectional area of the 3 other ends of nozzle, is equipped with shunt 4 in the nozzle 3, and shunt 4 welds on flow distribution plate 6, and shunt 4 and nozzle 3 form the annular export, and above-mentioned flow distribution plate 6 separates into four diffluence spouts 5 with this annular export, and gas can be through diffluence spout 5 to diffusion all around. Certainly the utility model discloses a number of reposition of redundant personnel mouth 5 is not limited to four of this embodiment, can also be except four and be no less than two other numbers, specifically sets up according to actual need.

The embodiment can well guide the airflow to spray towards the set direction, prevent the gas from leaking towards the opposite direction of the spraying direction, and the flow divider 4 positioned in the nozzle 3 can effectively disperse the gas to the periphery, so that the gas at the spraying position is quickly and uniformly mixed with the air.

The flow divider 4 according to the present embodiment is a conical flow divider with a vertex angle of 50 deg., and the angle between the central axis of the nozzle 3 and the extension of the outer surface of the nozzle 3 is less than 25 deg. for better ejection of the gas flow outwards. Of course, the apex angle of the conical flow divider of the present invention is not limited to 50 ° in this embodiment, and may be 45 ° -70 ° except 50 °, specifically set according to actual needs, at this time, in order to better make the air flow jet outwards, the included angle between the central axis of the nozzle 3 and the extension plane of the outer surface of the nozzle 3 is smaller than half of the apex angle of the conical flow divider.

The process of the gas injection of the injection flow guide pipe is as follows: the gas enters the nozzle 3 after entering the honeycomb duct body 2, the trumpet-shaped nozzle 3 diffuses the gas flow to the periphery, and meanwhile, the gas flow is accelerated to be distributed to the periphery under the action of the conical splitter, and finally, the gas is sprayed to the periphery from the four distribution ports 5.

It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.

Claims

1. An injection nozzle, comprising:

the flow guide pipe comprises a mounting plate (1) and a flow guide pipe body (2), wherein one end of the flow guide pipe body (2) is arranged on the mounting plate (1), the flow guide pipe body (2) comprises a first straight pipe (21), an arc-shaped pipe (22) and a second straight pipe (23) which are sequentially connected, and an included angle between the central axis of the first straight pipe (21) and the central axis of the second straight pipe (23) is 120-150 degrees; and

nozzle (3), its one end with the other end of honeycomb duct body (2) is connected, nozzle (3) for loudspeaker form and with the cross-sectional area of the one end that honeycomb duct body (2) are connected is less than the cross-sectional area of its other end, be equipped with shunt (4) in nozzle (3), shunt (4) with nozzle (3) form the annular export, the other end of honeycomb duct body (2) is equipped with flow distribution plate (6), flow distribution plate (6) will annular export is cut apart into two at least diffluence spouts (5), and gas can pass through flow distribution (5) are to diffusion all around.

2. The injection nozzle according to claim 1, characterized in that the arc-shaped pipe (22) is an arc-shaped pipe (22) with a central angle of 60 °, and the angle between the central axis of the first straight pipe (21) and the central axis of the second straight pipe (23) is 120 °.

3. The injection nozzle according to claim 1, characterized in that the flow divider (4) is a conical flow divider.

4. The injection nozzle of claim 3 wherein the apex angle of the conical splitter is between 45 ° and 70 °.

5. The jet nozzle according to claim 4, characterized in that the angle between the central axis of the nozzle (3) and the extension plane of the outer surface of the nozzle (3) is less than half the apex angle of the conical splitter.

6. The injection nozzle according to claim 1, characterized in that the nozzle body (2) is welded to the mounting plate (1).

7. The injection nozzle according to claim 1, characterized in that the first straight tube (21), the arc-shaped tube (22) and the second straight tube (23) are integrally formed.

8. The injection nozzle according to claim 1, characterized in that the splitter plate (6) is welded to the nozzle body (2).