CN215672480U

CN215672480U - Air inlet structure with safety protection function

Info

Publication number: CN215672480U
Application number: CN202121651965.9U
Authority: CN
Inventors: 李亚非; 刘超颖; 韩俊丽; 其他发明人请求不公开姓名
Original assignee: Shandong Shuifa Power Energy Technology Co ltd
Current assignee: Shandong Shuifa Power Energy Technology Co ltd
Priority date: 2021-07-20
Filing date: 2021-07-20
Publication date: 2022-01-28
Anticipated expiration: 2031-07-20

Abstract

The utility model discloses an air inlet structure with a safety protection function, which comprises a pipeline flame arrester, an intercooler, a throttle valve and an air inlet pipe, wherein one end of the pipeline flame arrester is connected with an intercooler air inlet cavity through a bolt, the other end of the intercooler air inlet cavity is connected with the intercooler through a bolt, the other side of the intercooler is connected with an intercooler air outlet cavity through a bolt, the other side of the intercooler air outlet cavity is connected with the throttle valve through a bolt, the other side of the throttle valve is connected with a pipeline flame arrester through a bolt, the other side of the pipeline flame arrester is connected with the air inlet pipe through a bolt, and the other end of the air inlet pipe is connected with an explosion door through a bolt. The pipeline flame arrester, the intercooler air inlet cavity, the intercooler air outlet cavity, the throttle valve, the pipeline flame arrester, the air inlet pipe and the explosion door are arranged to be matched with each other, so that the functions of quickly relieving pressure and extinguishing fire are achieved, and the intercooler and the air inlet pipe are protected.

Description

Air inlet structure with safety protection function

Technical Field

The utility model relates to the technical field of gas inlet of gas engines, in particular to a gas inlet structure with a safety protection function.

Background

At present, gas engines using various gases such as gas, biogas and coke oven gas as fuel have been rapidly developed. However, the gas engine has the following disadvantages in terms of intake air mixing: the common gas mixing mode is mixing outside a cylinder, the mixed gas is inflammable and explosive, when an air inlet valve is not closed tightly, tempering and blasting are easily generated in the air inlet pipe, and particularly, the tempering and blasting are easily generated for combustible gas with higher burning speed, such as coke oven gas. Serious accidents such as burning of an intercooler and explosion of an air inlet pipe of the gas engine can be caused when tempering and blasting are severe, and the normal work of the gas engine is seriously influenced.

The mode that explosion-proof valve was installed usually to current gas engine prevents to explode, for example, chinese utility model patent with publication number CN205297792U, it discloses "a V type gas engine's air intake system", it is through the afterbody installation explosion-proof valve at the intake manifold, can prevent the intake manifold explosion, reach the purpose of guaranteeing gas engine normal work, this kind of mode that prevents explosion at the afterbody installation explosion-proof valve of intake manifold has the defect, when tempering, blasting is serious, only through the risk of getting rid of the explosion that explosion-proof valve can not be timely sometimes, still can explode, damage intercooler and intake pipe.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem that the explosion risk can not be timely eliminated only through an explosion-proof valve when the air inlet structure is seriously tempered and blasted in the prior art, the utility model provides the air inlet structure with the safety protection function, which has the functions of rapid pressure relief and fire extinguishing, double guarantees are provided to prevent the explosion, and the intercooler is protected from being burnt out and exploded.

The utility model adopts the following technical scheme for solving the technical problems: an air inlet structure with safety protection function comprises a first pipeline flame arrester, an intercooler, a throttle valve and an air inlet pipe, the first pipeline flame arrester consists of a first shell, a second shell and a flame-retardant core, the first shell and the second shell of the flame arrester have higher strength, the flame-retardant core adopts a corrugated belt type, one end of the first pipeline flame arrester is connected with an intercooler air inlet cavity through a bolt, the other end of the intercooler air inlet cavity is connected with an intercooler through a bolt, the other side of the intercooler is connected with an intercooler air outlet cavity through a bolt, the other side of the intercooler air outlet cavity is connected with a throttle valve through a bolt, the other side of the throttle valve is connected with a second pipeline flame arrester through a bolt, the other side of the second pipeline flame arrester is connected with an air inlet pipe through a bolt, the other end of the air inlet pipe is connected with an explosion-proof door through a bolt, and the pressurized premixed fuel gas enters a cylinder cover and a cylinder of the engine through the following paths: pressurized premixed fuel gas → a first pipeline flame arrester → an intercooler air inlet cavity → an intercooler air outlet cavity → a throttle valve → a second pipeline flame arrester → an air inlet pipe.

Furthermore, 6 air outlets are arranged in the air inlet pipe.

Further, the intake pipe is made by the welded mode, the intake pipe adopts the segmentation structure, is formed by 2 sections through bolted connection, and 2 sections's junctions are sealed through sealed the pad.

Furthermore, the explosion vent is a spring type explosion vent.

Further, the corrugated strips are folded and rolled into a disc shape to form a fire retardant core, and the fire retardant core is arranged in the shell of the first pipeline fire retardant device to divide the section of the pipeline into a plurality of small triangular sections, wherein each triangular hole is a narrow channel.

Further, the throttle valve controls the intake air amount of the engine.

Further, the second pipe flame arrestor is structurally identical to the first pipe flame arrestor.

Compared with the prior art, the utility model provides the air inlet structure with the safety protection function, and the air inlet structure is provided with the pipeline flame arrester, the intercooler air inlet cavity, the intercooler air outlet cavity, the throttle valve, the pipeline flame arrester, the air inlet pipe and the explosion door which are matched with each other, so that the functions of quickly relieving pressure and extinguishing fire are achieved, and the intercooler and the air inlet pipe are protected.

The utility model has the following beneficial effects:

1. when the air inlet pipe is not tempered and blasted, the explosion-proof door seals the air inlet pipe, and the engine runs normally.

2. When the air inlet pipe is slightly tempered and blasted, the air inlet pipe is protected through rapid pressure relief of the explosion door, the pressure of the air inlet pipe is reduced after pressure relief, and the explosion door returns to a sealing state under the action of a spring, so that normal operation of an engine is guaranteed.

3. When the air inlet pipe is subjected to serious backfire blasting, the quick pressure relief of the explosion door and the fire extinguishing function of the pipeline fire arrester are realized, so that the intercooler is protected from being burnt out and being damaged by explosion, and the existence of the fire arrester further protects the supercharger of the engine.

Drawings

The utility model will be further described with reference to the following drawings and detailed description:

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

FIG. 2 is a schematic view of a flame arrestor for a pipe.

In the figure: 1. a first pipe flame arrestor; 101. a first housing; 102. a fire retardant core; 103. a second housing; 2. an intercooler air inlet cavity; 3. an intercooler; 4. an intercooler air outlet cavity; 5. a throttle valve; 6. a second conduit flame arrestor; 7. an air inlet pipe; 8. an explosion vent.

Detailed Description

In order to make the technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following specific embodiments.

Referring to fig. 1-2, an air intake structure with safety protection function comprises a first pipeline flame arrester 1, an intercooler 3, a throttle valve 5 and an air intake pipe 7, wherein the first pipeline flame arrester 1 is designed according to the principle of small hole quenching, the working principle of the first pipeline flame arrester is that flame can be extinguished when passing through narrow passages, the first pipeline flame arrester 1 consists of a first shell 101, a second shell 103 and a flame arresting core 102, the first shell 101 and the second shell 103 of the flame arrester have higher strength and can bear dynamic high pressure caused by detonation, the flame arresting core 102 is of a corrugated belt type and is made of stainless steel materials, the flame arresting core 102 is of a corrugated belt type and is folded into a disc shape, the disc shape is arranged in the shell of the first pipeline flame arrester 1 to divide the pipeline into a plurality of small triangular sections, each triangular hole is a narrow passage, when flame passes through, the flame surface in the pipeline is forced to pass through the narrow passages, the passages all meet the requirement of quenching diameter, so that flame is extinguished when passing through the flame retardant core, the flame retardant core not only needs to consider the requirement of quenching flame, but also needs to reduce the flow resistance of gas as much as possible, one end of the first pipeline flame arrester 1 is connected with the intercooler air inlet cavity 2 through a bolt, the other end of the intercooler air inlet cavity 2 is connected with the intercooler 3 through a bolt, the intercooler 3 has the function of reducing the temperature of the pressurized premixed gas to about 50 ℃, the gas temperature is reduced to improve the air inflow of the engine, the power of the engine is improved, and the engine is effectively prevented from knocking, the other side of the intercooler 3 is connected with the intercooler air outlet cavity 4 through a bolt, the other side of the intercooler air outlet cavity 4 is connected with the throttle valve 5 through a bolt, the throttle valve 5 controls the air inflow of the engine, so that the power of the engine is adjusted, the other side of the throttle valve 5 is connected with the second pipeline flame arrester 6 through a bolt, the structure principle of the second pipeline flame arrester 6 is the same as that of the first pipeline flame arrester 1, the other side of the second pipeline flame arrester 6 is connected with an air inlet pipe 7 through a bolt, the cooled gas enters the air inlet pipe 7 through a throttle valve 5 and the second pipeline flame arrester 6, the air inlet pipe 7 is welded by high-quality low-carbon steel, cast aluminum materials which are easy to crack and break during blasting are not adopted, the toughness of the high-quality low-carbon steel is good, the welding performance is good, for the convenience of manufacturing, the air inlet pipe 7 adopts a segmented structure and is formed by connecting 2 segments through bolts, the joint of the 2 segments is sealed through a sealing gasket, 6 air outlets are arranged inside the air inlet pipe 7, the other end of the air inlet pipe 7 is connected with an explosion-proof door 8 through a bolt, the explosion-proof door 8 is a spring type explosion-proof door, when a gas engine normally operates, the sealing is realized by the pretightening force of the spring, and the pressure in the air inlet pipe 7 is ensured to fluctuate, the explosion-proof door 8 is well and reliably sealed, when the air inlet pipe 7 is tempered and blasted, the explosion-proof door 8 can be rapidly opened, so that the air inlet pipe 7 is communicated with the atmosphere, and the rapidly increased gas pressure is discharged, thereby protecting the air inlet pipe 7, the intercooler 3 and other parts, and after pressure relief, the explosion-proof door 8 can rapidly return to a sealing state under the action of a spring, and ensuring the normal work of an engine.

The pressurized premixed fuel gas enters a cylinder head and a cylinder of the engine through the following paths: the supercharged premixed gas → the first pipeline flame arrester 1 → the intercooler air inlet cavity 2 → the intercooler 3 → the intercooler air outlet cavity 4 → the throttle valve 5 → the second pipeline flame arrester 6 → the air inlet pipe 7, the explosion-proof door 8 is connected to the other end of the air inlet pipe 7 through a bolt, the supercharged premixed gas is about 100-.

It should be understood that the detailed description and specific examples, while indicating the utility model, are given by way of illustration only, since various other embodiments will become apparent to those skilled in the art upon reference to the following detailed description.

Claims

1. The utility model provides an air intake structure with safety protection function, includes first pipeline spark arrester (1), intercooler (3), throttle valve (5) and intake pipe (7), its characterized in that: the first pipeline flame arrester (1) consists of a first shell (101), a second shell (103) and a flame-retardant core (102), the first shell (101) and the second shell (103) of the flame arrester have high strength, the flame-retardant core (102) adopts a corrugated belt type, one end of the first pipeline flame arrester (1) is connected with an intercooler air inlet cavity (2) through a bolt, the other end of the intercooler air inlet cavity (2) is connected with an intercooler (3) through a bolt, the other side of the intercooler (3) is connected with an intercooler air outlet cavity (4) through a bolt, the other side of the intercooler air outlet cavity (4) is connected with a throttle valve (5) through a bolt, the other side of the throttle valve (5) is connected with a second pipeline flame arrester (6) through a bolt, the other side of the second pipeline flame arrester (6) is connected with a bolt (7), and the other end of the air inlet pipe (7) is connected with an explosion-proof door (8) through a bolt, the pressurized premixed fuel gas enters a cylinder head and a cylinder of the engine through the following paths: pressurized premixed fuel gas → a first pipeline flame arrester (1) → an intercooler air inlet cavity (2) → an intercooler (3) → an intercooler air outlet cavity (4) → a throttle valve (5) → a second pipeline flame arrester (6) → an air inlet pipe (7).

2. The air intake structure with a safety protection function according to claim 1, wherein: 6 air outlets are arranged in the air inlet pipe (7).

3. An air intake structure with a safety guard function as claimed in claim 1 or 2, wherein: the air inlet pipe (7) is made in a welding mode, the air inlet pipe (7) is of a segmented structure and is formed by connecting 2 segments through bolts, and the joint of the 2 segments is sealed through a sealing gasket.

4. The air intake structure with a safety protection function according to claim 1, wherein: the explosion vent (8) is a spring type explosion vent.

5. The air intake structure with a safety protection function according to claim 1, wherein: the fire retardant core (102) is folded and rolled into a disc shape by a corrugated belt, and is arranged in the shell of the first pipeline fire retardant (1) to divide the section of the pipeline into a plurality of small triangular sections, and each triangular hole is a narrow channel.

6. The air intake structure with a safety protection function according to claim 1, wherein: the throttle valve (5) controls the intake air amount of the engine.

7. The air intake structure with a safety protection function according to claim 1, wherein: the second pipeline flame arrester (6) has the same structure principle as the first pipeline flame arrester (1).