Anti-explosion water-cooling supercharger

Abstract

The invention relates to an anti-explosion water-cooling supercharger which comprises a turbine motor, an intermediate, a gas compressor and a waste gas bypass mechanism. The waste gas bypass mechanism comprises a silicone tube, a diaphragm valve, a rocker arm and a waste gas bypass valve. The diaphragm valve comprises a shell, a diaphragm valve gas inlet tube, a diaphragm, an inner piston, a piston spring and a push rod. The diaphragm is fixedly connected to the shell, the push rod and the shell are slidably connected, and the push rod and the rocker arm are rotationally connected. The innerpiston and the push rod are fixedly connected. The lower end of the piston spring abuts against the shell, and the upper end of the piston spring abuts against the inner piston. The two ends of the silicone tube are connected to a gas outlet tube of the gas compressor and the diaphragm valve gas inlet tube. The waste gas bypass valve comprises a rotary shaft, a rotary arm, a valve body and a sealing sleeve. The rotary shaft is rotationally connected to the sealing sleeve and fixedly connected with the rocker arm. The rocker arm is fixedly connected to the rotary shaft. The valve body is fixedly connected to the rotary arm and arranged on a gas vent of a gas vent valve hole in an opening or closing mode. The supercharge pressure is adjustable, and the reliability is good.

Description

technical field [0001] The invention relates to an explosion-proof water-cooled supercharger for an explosion-proof diesel engine. Background technique [0002] Due to the limited ventilation conditions and the presence of methane gas in coal mine underground tunnels, only explosion-proof diesel engines that have undergone explosion-proof design modifications can be used underground. The explosion-proof water-cooled supercharger is the core component of the explosion-proof diesel engine, and its performance directly affects the power, economy and harmful emissions of the explosion-proof diesel engine. [0003] Chinese patent document CN203809104U (application number 201320873299.2) proposes a water-cooled explosion-proof variable supercharging device, including a compressor, an intermediate body and a turbine. Drive the coaxial impeller, and the impeller presses the air sent by the air filter pipe to pressurize it into the cylinder of the explosion-proof diesel engine. Whe...

AI Technical Summary

Problems solved by technology

[0004] The explosion-proof water-cooled supercharger of the prior art has the following two disadvantages: one is that the supercharging pressure cannot be adjusted, so that when the supercharging pressure of the explosion-proof water-cooled supercharger satisfies the requirements of the air intake volume of the explosion-proof diesel engine at low speed, the high-speed working condition increases. The pressure is too high and the intake air volume is too much, so that the exhaust temperature of the diesel engine is too high, the emission of harmful NOx is greatly increased, and the underground working environment of the coal mine is seriously polluted.

When the supercharging pressure of the explosion-proof water-cooled supercharger meets the requirements of the air intake volume in the high-speed working condition of the explosion-proof diesel engine, the supercharging pressure in the low-speed working condition is insufficient, and the air intake volume is relatively small, which makes the efficiency of the supercharger low

Second, because the volute inlet flange not only has a volute inlet, but also has a volute water inlet. When damaged, the water in the water inlet of the volute will enter the air inlet of the volute, resulting in the final water entering the cylinder of the explosion-proof diesel engine and damaging the explosion-proof diesel engine, that is, the reliability is poor

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