CN215860565U

CN215860565U - Semi-coke engine air inlet system

Info

Publication number: CN215860565U
Application number: CN202121756364.4U
Authority: CN
Inventors: 吴增刚; 曾志龙; 赖柱波; 唐兰; 杨占林; 苏展望; 金伟; 蔡晓霞; 卓荣康
Original assignee: Guangxi Yuchai Machinery Co Ltd
Current assignee: Guangxi Yuchai Marine and Genset Power Co Ltd
Priority date: 2021-07-30
Filing date: 2021-07-30
Publication date: 2022-02-18
Anticipated expiration: 2031-07-30

Abstract

The utility model discloses a semi-coke engine air inlet system, which relates to the technical field of engine air inlet and solves the technical problem that semi-coke is easy to backfire in an air inlet pipe, the air inlet system comprises a fuel gas inlet pipeline, an air inlet pipeline and a mixed gas pressurization air inlet pipeline, a fuel gas filter, a low-pressure fuel cut-off valve, a first flame arrester, a pressure regulating valve and a fuel gas injection metering valve are sequentially arranged from the input end to the output end of the fuel gas inlet pipeline, the input end of the air inlet pipeline is provided with the air filter, the output end of the air inlet pipeline is provided with an air control valve, a three-way pipe is sequentially arranged from the input end to the output end of the mixed gas pressurization air inlet pipeline, the three-way pipe is respectively connected with the output end of a fuel gas inlet pipeline and the output end of an air inlet pipeline, and the tail end of the air inlet pipe is provided with a first explosion-proof valve. The utility model is provided with the explosion-proof valve and the double flame arresters, thereby realizing multi-stage protection and effectively preventing the air inlet pipe from backfiring.

Description

Semi-coke engine air inlet system

Technical Field

The utility model relates to the technical field of engine air inlet systems, in particular to a semi-coke engine air inlet system.

Background

At present, the field application of semi-coke gas engines is increasing. The semi-coke gas is a mixed gas, the main components of which are methane, hydrogen, carbon monoxide and nitrogen, but the gas contains impurities such as water, hydrogen sulfide, ammonia, tar, dust and the like, which need to be treated, otherwise, engine parts can be out of work, and the operation of the engine is seriously influenced. The characteristic of hydrogen is that burning speed is fast, produces the detonation easily, and the gas gets into the blast pipe when scavenging moreover, causes the blast pipe to blow out, and the gas backward flow goes into the intake pipe when the valve is folded and opens, causes the intake pipe tempering. The characteristics of semi-coke gas make its use more complicated than that of normal gas. The air intake system is an important component of a semi-coke engine and relates to structures of air intake, gas intake, supercharging intake and the like. The existing air intake system of the semi-coke engine has the following disadvantages: the semi-coke gas is easy to produce backfire in the gas inlet pipe, and the arrangement of a flame arrester and an explosion-proof valve of the gas inlet system is insufficient or cannot be opened, so that the safety measures of the engine are insufficient.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem of the prior art, and aims to provide a high-safety blue-carbon engine air inlet system.

The technical scheme of the utility model is as follows: the utility model provides a blue charcoal gas engine air intake system, includes gas air inlet pipeline, air inlet pipeline, gas mixture pressure boost air inlet pipeline, follows gas air inlet pipeline's input is equipped with gas filter, low-pressure fuel trip valve, first spark arrester, air-vent valve, gas in proper order to the output, air inlet pipeline's input is equipped with air filter, air inlet pipeline's output is equipped with air control valve, follows gas mixture pressure boost air inlet pipeline's input is equipped with three-way pipe, booster, second spark arrester, intercooler, air throttle, intake pipe in proper order to the output, the three-way pipe is connected respectively gas air inlet pipeline's output, the end of intake pipe is equipped with first explosion-proof valve.

As a further improvement, the second flame arrestor is a hydrogen-only flame arrestor.

Further, the intercooler is provided with a second explosion-proof valve.

Further, the number of the air filters is 2, and the number of the superchargers is 2.

Further, the intercooler is disposed at an output end of an engine, and the supercharger is disposed at the other end of the engine.

Further, the air filter is located above the intercooler, and the three-way pipe is located above the middle of the engine.

Further, the air filter is connected with one side of the intercooler through a bracket.

Furthermore, the number of the air inlet pipes is 2, the air inlet pipes are respectively positioned at two sides of the engine, and the input end of each air inlet pipe is respectively provided with a throttle valve.

Furthermore, the input end of the fuel gas inlet pipeline is provided with a manual ball valve.

Furthermore, the intake pipe adopts high strength cast iron structure, the subsidiary pipeline of intake pipe all adopts stainless steel material to make, the inside radiating piece of intercooler adopts stainless steel material to make.

Advantageous effects

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

according to the utility model, the gas flame arrester is arranged on the gas inlet pipeline, the special flame arrester for hydrogen is arranged on the mixed gas pressurization gas inlet pipeline, and the explosion-proof valves are respectively arranged on the intercooler and the gas inlet pipe, so that multi-stage protection is formed, the gas inlet pipe is effectively prevented from backfiring, and the use safety is improved; the air inlet pipe adopts a high-strength cast iron structure, so that the risk of damage caused by explosion of the air inlet pipe is effectively reduced; the auxiliary pipelines of the air inlet pipe are all made of stainless steel materials, so that the corrosion of water and sulfur to the pipelines can be reduced; the heat dissipation piece in the intercooler is made of stainless steel, so that the risk of corrosion of impurities such as sulfur, ammonia and the like in the semi-coke gas to the intercooler can be reduced, and the air inlet temperature is kept within a reasonable range; the air inlet pipeline is provided with the double air filters connected in parallel, the air inlet pipeline realizes smooth design, the air inlet resistance is reduced, and the risk of shutdown caused by blockage of the air filter element is reduced; the utility model has reasonable layout and compact structure, and is suitable for the air intake of a V-shaped 16-cylinder high-power blue-charcoal engine.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic diagram of the practical application of the present invention.

Wherein: the system comprises a 1-fuel gas inlet pipeline, a 2-air inlet pipeline, a 3-mixed gas pressurization inlet pipeline, a 4-fuel gas filter, a 5-low-pressure fuel cut-off valve, a 6-first flame arrester, a 7-pressure regulating valve, an 8-fuel gas injection metering valve, a 9-air filter, a 10-air control valve, an 11-three-way pipe, a 12-supercharger, a 13-second flame arrester, a 14-intercooler, a 15-throttle valve, a 16-air inlet pipe, a 17-first explosion-proof valve, a 18-second explosion-proof valve, a 19-engine, a 20-bracket and a 21-manual ball valve.

Detailed Description

The utility model will be further described with reference to specific embodiments shown in the drawings.

Referring to fig. 1-2, the semi-coke engine air intake system comprises a fuel gas intake pipeline 1, an air intake pipeline 2 and a mixed gas pressurization intake pipeline 3. A gas filter 4, a low-pressure fuel cut-off valve 5, a first flame arrester 6, a pressure regulating valve 7 and a gas injection metering valve 8 are sequentially arranged from the input end to the output end of the gas inlet pipeline 1. An air filter 9 is arranged at the input end of the air inlet pipeline 2, and an air control valve 10 is arranged at the output end of the air inlet pipeline 2. A three-way pipe 11, a supercharger 12, a second flame arrester 13, an intercooler 14, a throttle valve 15 and an air inlet pipe 16 are sequentially arranged from the input end to the output end of the mixed gas supercharging air inlet pipeline 3, and the air inlet pipe 16 is used for conveying cylinders of a mixed gas engine 19. The three-way pipe 11 is respectively connected with the output end of the fuel gas inlet pipeline 1 and the output end of the air inlet pipeline 2, clean air and semi-coke gas are mixed in the three-way pipe 11 and then enter the supercharger 12, and the tail end of the air inlet pipe 16 is provided with a first explosion-proof valve 17. If abnormal phenomena such as backfire and the like occur in the air inlet pipe 16, the first explosion-proof valve 17 can be opened under the action of pressure, so that excessive pressure can be quickly discharged, and the safety of the engine is protected.

The second flame arrester 13 is a flame arrester special for hydrogen, and mainly aims at the characteristic of high combustion speed of hydrogen to prevent the mixed gas from producing backfire and knocking. The mixed gas passes through a special flame arrester for hydrogen and then enters an intercooler 14 to be cooled to a proper temperature.

The intercooler 14 is provided with a second explosion-proof valve 18, and if abnormal phenomena such as backfire and the like occur in the intercooler 14, the second explosion-proof valve 18 can be opened under the action of pressure, so that excessive pressure can be rapidly discharged, and the safety of the engine is protected.

The quantity of air cleaner 9 is 2, and 2 air cleaner 9 parallel mount are in air inlet pipeline 2, and air inlet pipeline 2 realizes the design of smoothness nature, reduces the resistance of admitting air, reduces air filter and takes place to block up and cause the risk of shutting down. The number of the superchargers 12 is 2, and the 2 superchargers 12 are arranged in parallel on the mixed gas supercharging air inlet pipeline 3, so that the air supply quantity of the supercharging gas can be improved, and the sufficient air supply quantity of the engine 19 is ensured.

The intercooler 14 is disposed at an output end of the engine 19, and the supercharger 12 is disposed at the other end of the engine 19. The air filter 9 is located above the charge air cooler 14 and the tee 11 is located above the middle of the engine 19. The air cleaner 9 is connected to one side of the intercooler 14 through a bracket 20. The number of the air inlet pipes 16 is 2, the air inlet pipes are respectively positioned at two sides of the engine 19, and the input ends of the air inlet pipes 16 are respectively provided with a throttle valve 15. The whole layout is reasonable, the structure is compact, and the device is suitable for the air intake of a V-shaped 16-cylinder high-power semi-coke engine.

The input end of the gas inlet pipeline 1 is provided with a manual ball valve 21. The intake pipe 16 adopts the high strength cast iron structure, effectively reduces the risk that the intake pipe 16 explodes and damages, and the attached pipeline of intake pipe 16 all adopts stainless steel material to make, can reduce the corruption of water, sulphur to the pipeline, and the inside radiating piece of intercooler 14 adopts stainless steel material to make, can reduce the risk that the intercooler corrodes to impurities such as sulphur, ammonia in the blue charcoal gas, makes the intake air temperature keep within reasonable range.

According to the utility model, the gas flame arrester is arranged on the gas inlet pipeline, the special flame arrester for hydrogen is arranged on the mixed gas pressurization gas inlet pipeline, and the explosion-proof valves are respectively arranged on the intercooler and the gas inlet pipe, so that multi-stage protection is formed, the gas inlet pipe is effectively prevented from backfiring, and the use safety is improved.

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

Claims

1. The semi-coke air engine air inlet system comprises a fuel gas inlet pipeline (1), an air inlet pipeline (2) and a mixed gas pressurization air inlet pipeline (3), and is characterized in that a fuel gas filter (4), a low-pressure fuel cut-off valve (5), a first flame arrester (6), a pressure regulating valve (7) and a fuel gas injection metering valve (8) are sequentially arranged from the input end to the output end of the fuel gas inlet pipeline (1), the air filter (9) is arranged at the input end of the air inlet pipeline (2), an air control valve (10) is arranged at the output end of the air inlet pipeline (2), a three-way pipe (11), a supercharger (12), a second flame arrester (13), an intercooler (14), a throttle valve (15) and an air inlet pipe (16) are sequentially arranged from the input end to the output end of the mixed gas pressurization air inlet pipeline (3), and the three-way pipe (11) is respectively connected with the output end, the throttle valve (15) and the air inlet pipeline (1), And a first explosion-proof valve (17) is arranged at the tail end of the air inlet pipe (16) at the output end of the air inlet pipeline (2).

2. The semi-coke engine air intake system according to claim 1, wherein the second flame arrester (13) is a flame arrester dedicated to hydrogen.

3. Semi-coke engine air intake system according to claim 1, characterized in that the charge air cooler (14) is provided with a second explosion-proof valve (18).

4. A semi-coke engine intake system according to claim 1, wherein the number of the air filters (9) is 2, and the number of the superchargers (12) is 2.

5. A semi-coke engine air intake system according to claim 1, characterized in that the charge air cooler (14) is arranged at the output of an engine (19) and the supercharger (12) is arranged at the other end of the engine (19).

6. A semi-coke engine air intake system according to claim 5, characterized in that the air filter (9) is located above the intercooler (14) and the tee (11) is located above the middle of the engine (19).

7. A semi-coke engine air intake system according to claim 6, characterized in that the air filter (9) is connected to one side of the intercooler (14) by a bracket (20).

8. A semi-coke engine air intake system according to claim 5, characterized in that the number of the air intake pipes (16) is 2, the air intake pipes are respectively positioned at two sides of the engine (19), and the input end of each air intake pipe (16) is respectively provided with a throttle valve (15).

9. Semi-coke engine air intake system according to claim 1, characterized in that the input end of the gas intake line (1) is provided with a manual ball valve (21).

10. The semi-coke engine air intake system according to any one of claims 1 to 9, wherein the air intake pipe (16) is made of high-strength cast iron, the auxiliary pipelines of the air intake pipe (16) are all made of stainless steel, and the radiator inside the intercooler (14) is made of stainless steel.