CN211174410U

CN211174410U - Air inlet connecting pipe assembly and natural gas engine thereof

Info

Publication number: CN211174410U
Application number: CN201921554785.1U
Authority: CN
Inventors: 林鹏慧; 朱雄; 曾黎
Original assignee: Guangxi Yuchai Machinery Co Ltd
Current assignee: Guangxi Yuchai Machinery Co Ltd
Priority date: 2019-09-18
Filing date: 2019-09-18
Publication date: 2020-08-04
Anticipated expiration: 2029-09-18

Abstract

The utility model provides an air inlet pipe assembly and natural gas engine thereof, include: the pipeline comprises a pipeline body, wherein a pipeline joint, a bent pipe and a straight pipe are arranged on the pipeline body, one end of the pipeline joint is connected with one end of the bent pipe, and the other end of the bent pipe is connected with one end of the straight pipe; the straight pipe is also provided with a mixer and a throttle valve which are communicated with the straight pipe, the mixer is also provided with a natural gas inlet pipe, and one end of the natural gas inlet pipe is communicated with and fixedly connected with the mixer; the utility model provides an admit air and connect subassembly and natural gas engine thereof, with the vortex mixed function direct integration in the takeover that admits air, both realized the function, reduced part quantity again, practiced thrift the overall cost, through casting or welded technology mode for mixed function is more reliable, and the gas leakage risk reduces.

Description

Air inlet connecting pipe assembly and natural gas engine thereof

Technical Field

The utility model belongs to the technical field of the engine pipeline, concretely relates to air inlet pipe assembly and natural gas engine thereof.

Background

At present, the natural gas engine adopting a single-point injection scheme is characterized in that the mixing of air and natural gas is realized by a mixer, the mixer is generally arranged behind an electronic throttle valve, the air and the natural gas are mixed in the mixer, and the mixture enters each cylinder of the engine through an air inlet connecting pipe. Due to the technical level of the mixer or due to the limitation of the arrangement scheme of the air supply system, insufficient mixing uniformity is often caused, namely, the air and the natural gas cannot be mixed sufficiently.

The Chinese utility model with publication number CN206972406U discloses an air inlet connecting pipe of a diesel engine, which comprises an air inlet connecting pipe body, a waste gas guide pipe and an air inlet mixer, wherein the front side and the rear side of the air inlet connecting pipe body are respectively provided with an air inlet channel and a waste gas inlet channel, the upper part of the air inlet channel of the air inlet connecting pipe body is provided with a waste gas guide pipe installation cavity, and the waste gas guide pipe is vertically embedded in the waste gas guide pipe installation cavity; the waste gas guide pipe is internally provided with a waste gas guide channel, the side surface of the waste gas guide pipe is provided with an air inlet end, the air inlet end of the waste gas guide pipe is communicated with the air outlet end of the waste gas inlet channel, and the center of the air inlet mixer is provided with a plurality of mixing blades.

It can be seen that the air inlet connecting pipe in the prior art mainly depends on the mixer to conduct air and waste gas diversion and mixing, and the insufficient pipe length thereof causes the need of depending on the air inlet cavity and the gas mixing cavity with overlarge volumes, and the problem of uniform mixing also exists.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an admit air and connect subassembly and natural gas engine thereof aims at solving among the prior art and admits air the misce bene while structural compacter.

For realizing above-mentioned technical purpose, reach above-mentioned technological effect, the utility model discloses a following technical scheme realizes:

the utility model provides an air inlet pipe connecting component, include: the pipeline comprises a pipeline body, wherein a pipeline joint, a bent pipe and a straight pipe are arranged on the pipeline body, one end of the pipeline joint is connected with one end of the bent pipe, and the other end of the bent pipe is connected with one end of the straight pipe;

the straight pipe is also provided with a mixer and a throttle valve which are communicated with the straight pipe, the mixer is also provided with a natural gas inlet pipe, and one end of the natural gas inlet pipe is communicated with and fixedly connected with the mixer.

Preferably, turbine blades are also arranged in the bent pipe.

Preferably, the turbine blade further comprises a bearing, and the turbine blade is fixedly connected with a movable end of the bearing.

Preferably, the fixed end of the bearing is welded and fixed with the inner wall of the elbow.

Preferably, the turbine blade is integrally formed with the elbow.

Preferably, the vortex generator is arranged between the bent pipe and the straight pipe, one end of the vortex generator is communicated and fixedly connected with one end of the bent pipe, and the other end of the vortex generator is communicated and fixedly connected with one end of the straight pipe.

Preferably, the spoiler comprises a housing and a spoiler, wherein the spoiler is movably connected with the housing.

The utility model also provides a natural gas engine, include as above the intake connecting pipe subassembly.

The utility model has the advantages that:

the utility model provides an admit air and connect subassembly and natural gas engine thereof, with the vortex mixed function direct integration in the takeover that admits air, both realized the function, reduced part quantity again, practiced thrift the overall cost, through casting or welded technology mode for mixed function is more reliable, and whole pleasing to the eye degree is higher, leaks gas the risk and reduces.

Drawings

Fig. 1 is a schematic structural view of an air inlet pipe connecting assembly according to the present invention;

fig. 2 is a partial cross-sectional view of the elbow of the present invention;

fig. 3 is a schematic cross-sectional view of the elbow pipe according to the present invention;

FIG. 4 is a schematic view of the inlet connector assembly of the present invention including turbulators;

fig. 5 is a schematic structural view of the spoiler according to the present invention.

In the figure, 100 is a pipeline body, 101 is a pipeline joint, 102 is a bent pipe, 103 is a straight pipe, 104 is a turbine blade, 110 is a mixer, 120 is a natural gas inlet pipe, 130 is a throttle valve, 140 is a spoiler, 141 is a housing, and 142 is a spoiler.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly apparent, the present invention is further described in detail by the following embodiments with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

In an embodiment of the present invention, there is provided an intake pipe assembly, as shown in fig. 1, including: the engine air suction device comprises a pipeline body 100, wherein a pipeline joint 101, an elbow pipe 102 and a straight pipe 103 are arranged on the pipeline body 100, one end of the pipeline joint 101 is connected with one end of the elbow pipe 102, the other end of the pipeline joint 101 is connected with an engine, the other end of the elbow pipe 102 is connected with one end of the straight pipe 103, and the other end of the straight pipe 103 is used for sucking air;

the straight pipe 103 is further provided with a mixer 110 and a throttle 130 which are communicated with the straight pipe 103, the mixer 110 is further provided with a natural gas inlet pipe 120, one end of the natural gas inlet pipe 120 is communicated and fixedly connected with the mixer 110, the mixer 110 is used for fully and uniformly mixing natural gas and air, the throttle 130 is used for controlling the amount of air sucked, the throttle 130 can also be of an electronic actuating structure, and the specific structure refers to the prior art.

In one embodiment, as shown in fig. 2 and 3, a turbine blade 104 is further disposed in the elbow 102, the natural gas and the air are mixed by a mixer 110 and then pass through the turbine blade 104, and the turbine blade 104 rotates under the action of the mixture of the natural gas and the air, so as to further improve the uniformity of the mixing.

In one embodiment, a bearing is further included, and the turbine blade 102 is further fixedly connected to a free end of the bearing.

In one embodiment, the fixed end of the bearing is welded to the inner wall of the elbow 102.

In some embodiments, the turbine blades 104 are integrally formed with the elbow 102.

In some embodiments, as shown in fig. 4, a turbulence generator 140 is further included, the turbulence generator 140 is disposed between the curved pipe 102 and the straight pipe 103 for further improving the mixing uniformity of the natural gas and the air, one end of the turbulence generator 140 is communicated and fixedly connected with one end of the curved pipe 102, and the other end of the turbulence generator 140 is communicated and fixedly connected with one end of the straight pipe 103.

In one embodiment, as shown in fig. 5, the spoiler 140 includes a housing 141 and a spoiler 142, and the spoiler 142 is movably connected to the housing 141.

The utility model provides a natural gas engine, include as above the air inlet pipe assembly, other partial structures of this natural gas engine please refer to prior art, no longer describe herein.

Reference in the specification to "some embodiments," "one embodiment," or "an embodiment," etc., means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, the appearances of the phrases "in some embodiments," "in one embodiment," or "in an embodiment," or the like, in various places throughout this specification are not necessarily referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. Thus, a particular feature, structure, or characteristic illustrated or described in connection with one embodiment may be combined, in whole or in part, with a feature, structure, or characteristic of one or more other embodiments without limitation, as long as the combination is not logical or operational. Additionally, the various elements of the drawings of the present application are merely schematic illustrations and are not drawn to scale.

Having thus described several aspects of at least one embodiment of this invention, it is to be appreciated various alterations, modifications, and improvements will readily occur to those skilled in the art. Such alterations, modifications, and improvements are intended to be within the spirit and scope of the invention.

Claims

1. An intake air junction assembly, comprising: the pipeline comprises a pipeline body, wherein a pipeline joint, a bent pipe and a straight pipe are arranged on the pipeline body, one end of the pipeline joint is connected with one end of the bent pipe, and the other end of the bent pipe is connected with one end of the straight pipe;

2. The intake collar assembly of claim 1, wherein turbine blades are further disposed within the elbow.

3. The intake adapter assembly of claim 2, further comprising a bearing, wherein the turbine blade is further fixedly attached to a free end of the bearing.

4. The intake air union assembly of claim 3, wherein the fixed end of the bearing is welded to the inner wall of the elbow.

5. The intake adapter assembly of claim 2 or 3, wherein the turbine blades are integrally formed with the elbow.

6. The intake connecting pipe assembly according to claim 1 or 2, further comprising a spoiler disposed between the curved pipe and the straight pipe, one end of the spoiler being communicated and fixedly connected with one end of the curved pipe, and the other end of the spoiler being communicated and fixedly connected with one end of the straight pipe.

7. The intake collar assembly of claim 6, wherein the spoiler comprises a housing and a spoiler that is movably coupled to the housing.

8. A natural gas engine comprising the intake air connector assembly of any one of claims 1 to 7.