CN213063707U

CN213063707U - Explosion venting device of gas engine

Info

Publication number: CN213063707U
Application number: CN202020814101.3U
Authority: CN
Inventors: 璧典寒; 赵亮
Original assignee: Xi'an Kemei Power Technology Co ltd
Current assignee: Shandong Kemei Power Technology Co ltd
Priority date: 2020-05-15
Filing date: 2020-05-15
Publication date: 2021-04-27
Anticipated expiration: 2030-05-15

Abstract

The utility model discloses a gas engine explosion venting device, which comprises a gas engine and an explosion venting valve, wherein the engine comprises a mixer, a supercharger, an air inlet cavity, an air outlet cavity and a silencer; the explosion venting valve comprises a pressurization front explosion venting valve, an intercooling front explosion venting valve, a crankcase explosion venting valve, an air inlet pipe explosion venting valve and an exhaust explosion venting valve; a supercharging front explosion venting valve is communicated between the mixer and the air inlet part of the supercharger, the air inlet part of the supercharger is communicated with an air inlet cavity, the air inlet cavity is provided with an intercooling front explosion venting valve, and an intercooler is communicated between the air inlet cavity and the air outlet cavity; this scheme can in time release gas engine or generating set internal pressure through letting out explode the valve, can not damage spare part because of the pressure rises suddenly.

Description

Explosion venting device of gas engine

Technical Field

The utility model relates to a gas engine safety technical field especially relates to a gas engine lets out and explodes device.

Background

The high-power fixed gas engine adopts a premixing air inlet mode, gas and air are mixed in a mixer in front of a supercharger, the air-fuel ratio of mixed gas is in the ignition range of the gas, the mixed gas enters a combustion chamber through the supercharger, an air inlet cavity, an intercooler, an air outlet cavity and a cylinder cover air passage, the mixed gas in the whole flow passage has the hidden trouble of being ignited, for example, sparks are generated by the rotation of a supercharger impeller, high-temperature hot spots are generated by the carbon deposition of an air inlet valve or the air inlet pipe is tempered when the air valve is folded, the mixed gas is combusted in the air inlet flow passage to cause deflagration, the air inlet pipeline of the engine explodes when the air inlet pipe is serious, flame can be spread to the mixer, the pressure rises.

When a gas engine runs, the air-fuel ratio of mixed gas is too large or the combustion in a cylinder catches fire, so that the combustion of the gas in a combustion chamber is insufficient, part of unburned combustible gas enters an exhaust pipe along with exhaust, the exhaust pipe is ignited due to high temperature in the exhaust pipe, and the exhaust pipe is blown out, so that a supercharger and an external exhaust pipe or a silencer are damaged in severe cases. When the gas engine runs, part of mixed gas in the combustion chamber is blown into a crankcase through a piston ring, and residual waste gas in the crankcase is possibly ignited, so that the engine body or parts on the side surface of the engine body are damaged in a severe condition.

SUMMERY OF THE UTILITY MODEL

The utility model provides a solve above-mentioned problem, provide a gas engine and let out and explode device, let out and explode the valve at gas engine's full flow key setting, in time with the release of gas mixture burning explosion pressure in the inlet channel, the safe operation of guarantee engine.

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

the explosion venting device of the gas engine comprises the gas engine and an explosion venting valve, wherein the engine comprises a mixer, a supercharger, an air inlet cavity, an air outlet cavity and a silencer; the explosion venting valve comprises a pressurization front explosion venting valve, an intercooling front explosion venting valve, a crankcase explosion venting valve, an air inlet pipe explosion venting valve and an exhaust explosion venting valve; a supercharging front explosion venting valve is communicated between the mixer and the air inlet part of the supercharger, the air inlet part of the supercharger is communicated with an air inlet cavity, the air inlet cavity is provided with an intercooling front explosion venting valve, and an intercooler is communicated between the air inlet cavity and the air outlet cavity; the gas outlet cavity is also communicated with a machine body, the machine body comprises a crankcase, a gas inlet pipe and a gas outlet pipe, a crankcase explosion venting valve is arranged on a side observation cover of the crankcase, and a gas inlet pipe explosion venting valve is arranged on the end surface of the gas inlet pipe; the air inlet pipe is communicated with the silencer through the exhaust part of the supercharger, and an exhaust explosion venting valve is arranged between the exhaust part of the supercharger and the silencer; after being mixed in the mixer, the air and the fuel gas are compressed by the supercharger and cooled by the intercooler, enter the combustion chamber of the engine for combustion, are discharged by the air outlet cavity and are finally discharged out of the engine by the silencer; and at least 1 explosion venting valve is arranged at the same position.

Optionally, the explosion venting valve is a mechanical explosion venting valve or an electric control explosion venting valve, the electric control explosion venting valve is further provided with a pressure sensor and an electric device, and the electric device controls opening and closing of the explosion venting valve according to the pressure detected by the pressure sensor.

Optionally, the opening pressure of the explosion venting valve 2 before pressurization is 0.1 bar; opening pressure of an explosion venting valve 4 is 3bar before intercooling; the opening pressure of the crankcase explosion venting valve 8 is 0.1 bar; the opening pressure of an air inlet pipe explosion venting valve 12 is 3 bar; the exhaust explosion venting valve 14 opens at a pressure of 0.1 bar.

Adopt the utility model discloses a beneficial effect of production does: through the explosion venting valve of the whole flow of air inlet, air exhaust and crankcase ventilation, the gas engine has a complete explosion venting function, when the gas engine runs, if the conditions of combustion and explosion of mixed gas, combustion waste gas and residual waste gas occur, the pressure can be released in time through the explosion venting valve, the parts cannot be damaged due to sudden rise of the pressure, and simultaneously, the temperature is reduced due to rapid release of the pressure, so that the flame is automatically extinguished.

Drawings

Fig. 1 is a schematic view of the structure principle of the present invention.

In the figure: 1-a mixer; 2-explosion relief valve before pressurization; 3, a supercharger; 4-explosion relief valve before intercooling; 5, an air inlet cavity; 6, an intercooler; 7-air outlet cavity; 8-crankcase explosion relief valve; 9-body; 10-an air inlet pipe; 11-exhaust pipe; 12-air inlet pipe explosion venting valve; 13-a silencer; and 14, an exhaust explosion venting valve.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below 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.

Referring to fig. 1, the explosion venting device for the gas engine comprises the gas engine and an explosion venting valve, wherein the engine comprises a mixer 1, a supercharger 3, an air inlet cavity 5, an air outlet cavity 7 and a silencer 13; the explosion venting valve comprises a pressurization front explosion venting valve 2, an intercooling front explosion venting valve 4, a crankcase explosion venting valve 8, an air inlet pipe explosion venting valve 12 and an exhaust explosion venting valve 14; a supercharging front explosion venting valve 2 is communicated between the air inlet parts of the mixer 1 and the supercharger 3, the air inlet part of the supercharger 3 is communicated with an air inlet cavity 5, the air inlet cavity 5 is provided with an intercooling front explosion venting valve 4, and an intercooler 6 is communicated between the air inlet cavity 5 and an air outlet cavity 7; the air outlet cavity 7 is also communicated with a machine body 9, the machine body 9 comprises a crankcase, an air inlet pipe 10 and an air outlet pipe 11, a crankcase explosion venting valve 8 is arranged on a side observation cover of the crankcase, and an air inlet pipe explosion venting valve 12 is arranged on the end surface of the air inlet pipe 10; the air inlet pipe 10 is communicated with a silencer 13 through an exhaust part of the supercharger 3, and an exhaust explosion venting valve 14 is arranged between the exhaust part of the supercharger 3 and the silencer 13; after being mixed in the mixer 1, the air and the fuel gas are compressed by the supercharger 3 and cooled by the intercooler 6, enter the combustion chamber of the engine for combustion, are discharged by the air outlet cavity 7 and are finally discharged out of the engine by the silencer 13; and at least 1 explosion venting valve is arranged at the same position.

The explosion venting valve is a mechanical explosion venting valve or an electric control explosion venting valve, the electric control explosion venting valve is also provided with a pressure sensor and an electric device, and the electric device controls the opening and closing of the explosion venting valve according to the pressure detected by the pressure sensor.

Gas engine can adopt the gas engine let out explode the device.

Generating set also can adopt the gas engine let out explode the device.

The utility model discloses a gas engine admits air, exhausts, the whole flow of crankcase ventilation lets out and explodes the valve, makes the engine possess complete let out and explode the function. Arranging an explosion venting valve in an air inlet flow of the gas engine to release the combustion explosion pressure of the mixed gas in the air inlet flow in time; arranging an explosion venting valve in the exhaust flow of the gas engine to timely release the combustion explosion pressure of the combustion exhaust gas in the exhaust flow channel; the crankcase of the gas engine is provided with an explosion venting valve, so that the residual waste gas in the crankcase is combusted and exploded in time and pressure is released.

When the engine runs, the flow from the mixing of gas and air to the combustion chamber, the exhaust flow after the combustion and the flow of residual waste gas into the crankcase are realized, the gas engine has a complete explosion venting function through the explosion venting valve of the whole ventilation flow of the gas inlet, the exhaust and the crankcase, and if the conditions of combustion and explosion of the mixed gas, the combustion waste gas and the residual waste gas occur, the pressure can be released in time through the explosion venting valve, the parts cannot be damaged due to sudden pressure rise, and meanwhile, the temperature is reduced due to the rapid pressure release, so that the flame is automatically extinguished.

In the embodiment 1, referring to fig. 1, the explosion venting device of the gas engine comprises a pressurization front explosion venting valve 2, an intercooling front explosion venting valve 4 and an air inlet pipe explosion venting valve 12 which are arranged on an air inlet flow channel; an exhaust explosion venting valve 14 is arranged in the exhaust flow; and a crankcase explosion venting valve 8 is arranged in the crankcase gas blowby flow.

The explosion venting valve 2 before pressurization is arranged behind the mixer 1 and in front of the supercharger 3; the pre-intercooling explosion venting valve 12 is arranged behind the supercharger 3 and in front of the intercooler 6; the air inlet pipe explosion venting valve 12 is arranged on the end surface of the air inlet cavity 5. The exhaust flow explosion venting valve 14 is arranged behind the supercharger 3 and in front of the silencer 13. The crankcase flow explosion venting valve 8 is arranged on the observation cover on the side surface of the machine body 9. The explosion venting valves are all mechanical explosion venting valves, the valves are automatically opened when the pressure is higher than the set pressure, and the valves are automatically closed and reset after the pressure is reduced, so that the operation of an engine is not influenced.

The explosion venting valve 2 before pressurization is arranged on a pipeline behind the mixer 1 and in front of the supercharger 3, and the opening pressure is 0.1 bar; the pre-intercooling explosion venting valve 4 is arranged on an air inlet cavity 5 behind the supercharger 3 and in front of the intercooler 6, and the opening pressure is 3 bar; the crankcase explosion venting valve 8 is arranged on the engine body 9, and the opening pressure is 0.1 bar; an air inlet pipe explosion venting valve 12 is arranged on an air inlet pipe 10, and the opening pressure is 3 bar; the exhaust explosion venting valve 14 is opened at a pressure of 0.1bar before the muffler 13 after the supercharger 3 is installed.

After being mixed in the mixer, the air and the fuel gas enter a combustion chamber of the engine through a supercharger 3, an intercooler 6 and an air inlet cavity 5, and explosion venting valves are arranged among parts; and the exhaust explosion venting valve 14 and the crankcase explosion venting valve 8 are added, and the explosion venting valves are arranged in flow passages of the air inlet and exhaust devices of the whole gas engine and the like with backfire explosion to perform explosion venting, so that the engine has a complete explosion venting function.

The number and the pressure of the explosion venting valves can be designed in a matching way according to the requirements of the gas engine.

Embodiment 2, referring to fig. 1, the difference from embodiment 1 is that the explosion venting valve is an electrically controlled explosion venting valve, the electrically controlled explosion venting valve is further provided with a pressure sensor and an electric device, and the electric device controls the opening and closing of the explosion venting valve according to the pressure detected by the pressure sensor.

The foregoing is a more detailed description of the present invention taken in conjunction with the accompanying drawings, which are not intended to limit the invention to the particular embodiments described herein. For those skilled in the art to which the invention pertains, equivalent substitutes or obvious modifications may be made without departing from the spirit of the invention, and the same properties or uses are deemed to be within the scope of the invention as determined by the claims as filed.

Claims

1. A gas engine explosion venting device comprises a gas engine and an explosion venting valve, and is characterized in that the engine comprises a mixer (1), a supercharger (3), an air inlet cavity (5), an air outlet cavity (7) and a silencer (13); the explosion venting valve comprises a pressurization front explosion venting valve (2), an intercooling front explosion venting valve (4), a crankcase explosion venting valve (8), an air inlet pipe explosion venting valve (12) and an exhaust explosion venting valve (14); a supercharging front explosion venting valve (2) is communicated between the mixer (1) and the air inlet part of the supercharger (3), the air inlet part of the supercharger (3) is communicated with an air inlet cavity (5), the air inlet cavity (5) is provided with an intercooling front explosion venting valve (4), and an intercooler (6) is communicated between the air inlet cavity (5) and the air outlet cavity (7); the air outlet cavity (7) is also communicated with a machine body (9), the machine body (9) comprises a crankcase, an air inlet pipe (10) and an air outlet pipe (11), the crankcase explosion venting valve (8) is arranged on a side observation cover of the crankcase, and the air inlet pipe explosion venting valve (12) is arranged on the end surface of the air inlet pipe (10); the air inlet pipe (10) is communicated with a silencer (13) through an exhaust part of the supercharger (3), and an exhaust explosion venting valve (14) is arranged between the exhaust part of the supercharger (3) and the silencer (13); after being mixed in the mixer (1), air and fuel gas are compressed by the supercharger (3) and cooled by the intercooler (6), enter the combustion chamber of the engine for combustion, are discharged by the air outlet cavity (7), and are finally discharged out of the engine by the silencer (13); and at least 1 explosion venting valve is arranged at the same position.

2. The gas engine explosion venting apparatus of claim 1, wherein: the explosion venting valve is a mechanical explosion venting valve or an electric control explosion venting valve, the electric control explosion venting valve is also provided with a pressure sensor and an electric device, and the electric device controls the opening and closing of the explosion venting valve according to the pressure detected by the pressure sensor.

3. The gas engine explosion venting apparatus of claim 1, wherein: the opening pressure of the explosion venting valve (2) is 0.1bar before pressurization; opening pressure of a explosion venting valve (4) before intercooling is 3 bar; the opening pressure of a crankcase explosion venting valve (8) is 0.1 bar; the opening pressure of an air inlet pipe explosion venting valve (12) is 3 bar; the opening pressure of the exhaust explosion venting valve (14) is 0.1 bar.