Flow-limiting fuel gas proportional valve

The invention discloses a flow-limiting fuel gas proportional valve, which comprises a valve body, wherein the lower end face of the valve body is provided with a gas inlet; a plunger is arranged inside the valve body; a patch which can be used for blocking the gas inlet is arranged at the lower end of the plunger; a movable core is arranged at the upper end of the plunger; a plurality of proportional valve coils are arranged outside the movable core; an elastic resetting device is further arranged between the lower end of the movable core and the plunger; and a limiting device is further arranged at the upper end of the movable core. The limiting device is arranged, and the movable core is used for applying magnetic field force to the plunger after the proportional valve coils are electrified, so that the plunger is used for driving the patch to move, and an opening is formed between the patch and the gas inlet; when current applied to the proportional valve coils is too large or too small, the work of the g