CN214660542U

CN214660542U - Single-metering valve homogeneous pressure-equalizing mixing system of V-shaped gas engine

Info

Publication number: CN214660542U
Application number: CN202120335119.XU
Authority: CN
Inventors: 吕立强
Original assignee: Guangxi Yuchai Machinery Co Ltd
Current assignee: Guangxi Yuchai Marine and Genset Power Co Ltd
Priority date: 2021-02-05
Filing date: 2021-02-05
Publication date: 2021-11-09
Anticipated expiration: 2031-02-05

Abstract

The utility model discloses a single metering valve homogeneity voltage-sharing hybrid system of V type gasengine relates to gas engine air intake system's field, has solved present gas engine hybrid system with high costs or because of the even degree of both sides gas mixture leads to robbing the technical problem that the gas phenomenon takes place differently. The gas mixer comprises a gas interface, two mixers, gas compressors, a metering valve and an intercooler, wherein the gas compressors are connected with the two mixers in a one-to-one correspondence manner; the gas interface is connected with the gas inlet end of the metering valve, the gas outlet end of the metering valve is respectively connected with the gas inlet ends of the two mixers, the two gas compressors are connected with the gas inlet end of the intercooler through the inverted Y-shaped collecting pipe, and the gas outlet end of the intercooler is respectively connected with the cylinders on two sides of the gas engine. The utility model provides the high uniformity of air-fuel ratio makes the distribution of both sides cylinder more even, has reduced and has robbed gas serious phenomenon, simultaneously also great reduction the cost of hybrid system.

Description

Single-metering valve homogeneous pressure-equalizing mixing system of V-shaped gas engine

Technical Field

The utility model relates to a gas engine air intake system, more specifically say that it relates to single metering valve homogeneity voltage-sharing hybrid system of V type gasengine.

Background

At present, a hybrid system controlled by a double metering valve is mostly adopted for a V-type gas engine, as shown in figure 1. The air-fuel ratio of the two sides tends to be consistent through independent control of each side, so that air inlet of the two sides is relatively uniform, and the phenomenon of air robbery under high power is not obvious. However, this approach uses two metering valves and a intercooler, resulting in higher cost. In addition, there are also some that employ single metering valve control, as shown in FIG. 2. The end of the gas main pipe is controlled by a single metering valve, then two paths of the gas branch respectively enter a mixer to be mixed with air to form mixed gas, the mixed gas comes out from the gas outlet of the gas compressor, namely enters an intercooler, and finally enters each cylinder from the gas inlet pipe. However, when the two mixers mix the gas, the gas mixture may be different in uniformity, so that the air-fuel ratio on both sides of the V-type gas engine may be less consistent, and the air-fuel ratio may be easily robbed. Especially under the condition of high power of the gas engine, the downward gas robbing is particularly obvious.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is not enough to prior art, provide V type gasengine single metering valve homogeneity voltage-sharing hybrid system, solved present gas engine hybrid system with high costs or lead to robbing the problem that the gas phenomenon takes place because of the even degree of both sides gas mixture differs.

The technical scheme of the utility model lies in: the single-metering valve homogeneous voltage-sharing mixing system of the V-shaped gas engine comprises a gas interface, two mixers, gas compressors connected with the two mixers in a one-to-one correspondence manner, a metering valve and an intercooler; the gas interface is connected with the gas inlet end of the metering valve, the gas outlet end of the metering valve is respectively connected with the gas inlet ends of the two mixers, the two gas compressors are connected with the gas inlet end of the intercooler through the inverted Y-shaped collecting pipe, and the gas outlet end of the intercooler is respectively connected with the cylinders on two sides of the gas engine.

The improved Y-shaped collecting pipe comprises a gas mixing pipe and two branch pipes which take the gas mixing pipe as a symmetrical center; one end of each of the two branch pipes is connected with the two gas compressors in a one-to-one correspondence mode, the other end of each of the two branch pipes is communicated with one end of a gas mixing pipe, and the other end of each gas mixing pipe is connected with the gas inlet end of the intercooler.

Further, the cross-sectional area of the branch pipe is smaller than that of the gas mixing pipe.

Furthermore, a transition arc is arranged at the joint of the two branch pipes.

Furthermore, the end of the transition arc is recessed towards the interior of the branch pipe.

Furthermore, the intercooler comprises an intercooler body, an air inlet interface and two air outlet interfaces; the intercooler is internally provided with an air mixing cavity, and the air inlet interface is arranged on one side of the intercooler body and communicated with the air mixing cavity; the two air outlet interfaces are arranged on the other side of the intercooler body and communicated with the air mixing cavity.

Advantageous effects

The utility model has the advantages that: the hybrid system has set up a metering valve and an intercooler to realize being connected of two compressors and intercooler through falling Y type collecting pipe, make the gas mixture can carry out twice and mix the back, reentrant cylinder, fine assurance get into the gas concentration of gas engine both sides cylinder unanimous, improved the uniformity of air-fuel ratio, make the distribution of both sides cylinder more even, reduced and robbed gas serious phenomenon. And, compare prior art, the utility model discloses only realize the mixing and the transport of gas and air promptly through a metering valve and an intercooler, great reduction the cost of hybrid system.

Drawings

FIG. 1 is a schematic diagram of a mixing system according to the prior art;

FIG. 2 is a schematic diagram of another prior art mixing system;

FIG. 3 is a schematic diagram of a hybrid system according to the present invention;

FIG. 4 is a schematic structural view of the inverted Y-shaped collecting pipe of the present invention;

fig. 5 is a schematic structural view of an intercooler of the present invention.

Detailed Description

The present invention will be further described with reference to the following examples, which are not intended to limit the scope of the present invention, but are intended to be covered by the appended claims in any way.

Referring to fig. 3, the utility model discloses a V type gas engine single metering valve homogeneity voltage-sharing hybrid system, including gas interface 1, two blenders 2, with the compressor 3 that two blenders 2 one-to-one are connected. The utility model discloses a hybrid system still includes a metering valve 4, an intercooler 5. The gas interface 1 is connected with the gas inlet end of the metering valve 4, the gas outlet end of the metering valve 4 is respectively connected with the gas inlet ends of the two mixers 2, the two gas compressors 3 are connected with the gas inlet end of the intercooler 5 through the inverted Y-shaped collecting pipe 7, and the gas outlet end of the intercooler 5 is respectively connected with the cylinders 6 on two sides of the gas engine. Namely, the gas interface 1 is controlled by a single metering valve 4, and then the two paths of the gas branch respectively enter the mixer 2. The mixers 2 on both sides mix air and gas, respectively, to form a mixed gas. And then the two paths of mixed gas come out from the air outlet end of the air compressor 3 to be converged, and the first time of homogenizing and pressure-equalizing mixing is carried out in an inverted Y-shaped collecting pipe 7. Then the mixture enters an intercooler 5 for second homogenizing, pressure equalizing and mixing, and finally enters each cylinder 6 from an air inlet pipe. The gas mixture is through twice the mixture back, is exported to cylinder 6 by intercooler 5 again, can ensure that the gas concentration who gets into both sides cylinder 6 is unanimous, and the air-fuel ratio uniformity is high, and then makes the distribution of both sides cylinder 6 more even, has reduced and has robbed the serious phenomenon of gas.

Referring to fig. 4, the inverted Y-shaped collecting pipe 7 includes a gas mixing pipe 71 and two branch pipes 72 having the gas mixing pipe 71 as a symmetrical center. One end of each of the two branch pipes 72 is connected with the two compressors 3 in a one-to-one correspondence manner, the other end of each of the two branch pipes 72 is communicated with one end of the air mixing pipe 71, and the other end of the air mixing pipe 71 is connected with the air inlet end of the intercooler 5. The mixed gas is output from the compressor 3 and enters the gas mixing pipe 71 through the branch pipe 72, so that the first mixing of the mixed gas on the two sides is realized.

Preferably, the cross-sectional area of the branch pipe 72 is smaller than the cross-sectional area of the gas mixing pipe 71, and the cross-sectional area of the branch pipe 72 is smaller than the cross-sectional area of a pipe connected to the gas outlet of the compressor 3. By such an arrangement, the flow speed of the mixture gas can be increased when the mixture gas passes through the branch pipe 72, and the mixture gas can enter the mixture gas pipe 71 more quickly. Through the quick opposite flushing of the gas mixture on the two sides, the gas mixture is mixed more uniformly.

Preferably, a transition arc 73 is arranged at the joint of the two branch pipes 72, so that the inverted Y-shaped collecting pipe 7 can be manufactured conveniently.

Preferably, the ends of the transition arcs 73 are recessed inwardly of the branch tubes 72. I.e., the cross-sectional area at the junction of the branch pipe 72 and the gas-mixing pipe 71, is further reduced, thereby further increasing the flow rate of the gas-mixing into the gas-mixing pipe 71.

Referring to fig. 5, the intercooler 5 includes an intercooler body 51, an inlet port 52, and two outlet ports 53. The intercooler 5 is provided with an air mixing chamber 54, and the air inlet 52 is installed at one side of the intercooler body 51 and communicated with the air mixing chamber 54. Two air outlet interfaces 53 are arranged on the other side of the intercooler body 51 and communicated with the air mixing cavity 54. Specifically, the air inlet 52 is located in the middle of the lower portion of the intercooler body 51, the air outlet 53 is located above the intercooler body 51, and the two air outlet 53 and the air mixing cavity 54 are respectively located at two sides of the air inlet 52. Such setting can avoid using two solitary intercoolers 5, and through reasonable setting up gas mixture business turn over gas port position, avoids the gas mixture to go straight in and go out in intercooler 5 and leads to the problem that 6 pressures of both sides cylinder, flow have difference. In addition, go into high-order play through the low level of gas mixture for the gas mixture in the intercooler 5 can accomplish the homogeneous pressure of second time and mix, greatly improves combustion efficiency.

The above is only the preferred embodiment of the present invention, and it should be noted that for those skilled in the art, without departing from the structure of the present invention, several modifications and improvements can be made, which will not affect the utility model and the utility of the patent.

Claims

The V-shaped gas engine single-metering valve homogeneous pressure-equalizing mixing system comprises a gas interface (1), two mixers (2) and gas compressors (3) which are connected with the two mixers (2) in a one-to-one correspondence manner, and is characterized by further comprising a metering valve (4) and an intercooler (5); the gas port (1) is connected with the gas inlet end of the metering valve (4), the gas outlet end of the metering valve (4) is connected with the gas inlet ends of the two mixers (2) respectively, the two gas compressors (3) are connected with the gas inlet end of the intercooler (5) through the inverted Y-shaped collecting pipe (7), and the gas outlet end of the intercooler (5) is connected with the cylinders (6) on two sides of the gas engine respectively.
2. The V-shaped gas engine single-metering valve homogeneous pressure equalizing and mixing system according to claim 1, wherein the inverted Y-shaped collecting pipe (7) comprises a gas mixing pipe (71) and two branch pipes (72) with the gas mixing pipe (71) as a symmetrical center; one end of each of the two branch pipes (72) is connected with the two compressors (3) in a one-to-one correspondence mode, the other end of each of the two branch pipes (72) is communicated with one end of the air mixing pipe (71), and the other end of the air mixing pipe (71) is connected with the air inlet end of the intercooler (5).
3. The V-type gas engine single-metering valve homogeneous pressure equalizing mixing system according to claim 2, characterized in that the cross-sectional area of the branch pipe (72) is smaller than the cross-sectional area of the gas mixing pipe (71).
4. The V-shaped gas engine single-metering valve homogeneous and uniform mixing system according to claim 2, wherein a transition arc (73) is arranged at the junction of the two branch pipes (72).
5. The V-type gas engine single-metering valve homogeneous and uniform mixing system according to claim 4, wherein the end of the transition arc (73) is recessed towards the inside of the branch pipe (72).
6. The V-type gas engine single metering valve homogeneous pressure equalizing mixing system according to claim 1, characterized in that the intercooler (5) comprises an intercooler body (51), one air inlet interface (52) and two air outlet interfaces (53); the intercooler (5) is internally provided with a mixed air cavity (54), and the air inlet interface (52) is arranged on one side of the intercooler body (51) and communicated with the mixed air cavity (54); the two air outlet interfaces (53) are arranged on the other side of the intercooler body (51) and are communicated with the air mixing cavity (54).