CN-122014862-A - Vertical axis rotary pulse valve and combustion system

Abstract

After a rotor similar to a vertical axis wind driven generator which simply blows by wind force is arranged on an air supply or fuel pipeline, fuel or air supply forms pulse flow, the pulse flow is amplified by chemical reaction in the combustion process to form stronger pulse combustion, and strong physicochemical mixing ensures that the heating surface in the furnace is clean, heat transfer is enhanced, NOx is reduced, and the load of the furnace is increased.

Inventors

• YONG ZHANFENG

Assignees

• 雍占锋

Dates

Publication Date

20260512

Application Date

20241110

Claims (8)

1. 1. A vertical axis rotary pulse valve and a combustion system are characterized in that a rotary valve core of the pulse valve adopts an impeller similar to a vertical axis wind driven generator, a rotary shaft is perpendicular to an air inlet and outlet passage, and the impeller is rotated to realize self-rotation by means of pressure difference of fluid before and after the valve.
2. 2. The vertical axis rotary pulse valve and combustion system as set forth in claim 1, wherein the combustion system comprises at least one pulse valve in the air supply, fuel supply and flue.
3. 3. The vertical axis rotary pulse valve and combustion system of claim 1, wherein the rotary valve core is dragged by the motor, but the impeller can still rotate by itself by means of the pressure difference of the fluid when the motor is powered off.
4. 4. The vertical axis rotary pulse valve and combustion system according to claim 1, wherein the blades of the rotary valve core are convex and concave, and the resistance of the convex surface is high when the convex surface faces into the wind and the resistance of the concave surface is low when the concave surface faces into the wind.
5. 5. The vertical axis rotary pulse valve and combustion system of claim 1, wherein the number of blades of the rotary valve core is 3.
6. 6. The rotary pulse valve with vertical shaft and combustion system of claim 1, wherein the inlet and outlet of the pulse nozzle or the pulse valve are rectangular, and the long side of the rectangle is parallel to the mandrel of the rotary valve.
7. 7. The vertical axis rotary pulse valve and combustion system of claim 1, wherein the two ends of the rotary valve core are provided with disc-shaped reinforcing ribs.
8. 8. The vertical axis rotary pulse valve and the combustion system according to claim 1, wherein the frequency of the pulse valve of the combustion system is 1-50 Hz.

Description

Vertical axis rotary pulse valve and combustion system Technical Field The application relates to a rotary pulse valve for realizing pulse flow in the fields of air supply, pulverized coal conveying, fuel conveying, powder conveying, fluid conveying, chemical reaction, heat exchangers and the like of a combustion system, in particular to a vertical axis rotary pulse valve and the combustion system. Background Pulse combustion or pulse combustion has found many advantages in the combustion field since the use of pulse engines in the second world, such as self-air intake, high heat transfer coefficient, high volumetric heat load, low pollutants, etc., which means that the combustion system is small, strong, small, and cost effective. The pulse jet flow is more beneficial than the smooth flow in the aspects of a combustion system, powder drying, fire fighting, heat exchangers and the like. The pulse flow also has the functions of reducing the transmission gas consumption, the wind speed, the energy consumption and improving the efficiency in the fields of powder transmission, heat transfer, chemical reaction, heat exchangers and the like. Pulse combustion applied to the industrial heating furnace in the prior art realizes temperature control of the heating furnace by adjusting the duty ratio of the combustion time, which is also called pulse width modulation. The pulse combustion period in the prior art is about 30-240 seconds, and the period of the pulse combustion method is about 0.01-1 second, which are related and different. The acoustic pulse combustion with a short period is not mature in theory until the present time, and is a non-mainstream combustion technology in industrial application. The pulse combustion formed by the high-speed pulse valve control is relatively controllable, and from the occurrence of pulse combustion to date, a simple and reliable pulse valve is always a focus of people in the combustion field. High speed solenoid valves and valves are certainly the most successful in the field of internal combustion engines, but are rarely used in other industrial combustion fields, generally because they are relatively complex, and the valves in the industrial combustion field are larger than the valves of the internal combustion engines and are more difficult to switch quickly. If the device is found in detail, some rotary pulse valves, such as CN202111615256, are used for intelligent closestool rotary valve core type pulse valves, and some pulse nozzles are also used, so that a pen person designs a pulse nozzle, and a spring and a static pressure and dynamic pressure conversion switch in flowing are used for realizing pulse flow, so that the device is similar to a sprinkler valve for rotary water spraying on a lawn in principle. Also a pulse shower head for bathing. The above things were purchased and improved by the manufacturer from seven to eight years ago. The CN00218992 rotary air flow pulsation coal injection device and the CN00218994 rotary pulsation air flow generator are one of the patents closest to the technical field of the application, and the pulse coal injection device is undoubtedly one of the closest patents in the technical field of the application, wherein the pulverized coal air flow does not pulsate and the outer layer combustion air is pulsated, a person who tries to use the device also needs a motor to drag, the rotor is stressed greatly when a runner is blocked, and the stress is small when the runner is opened, so that the working condition of a bearing is severe, the motor and the bearing are easy to damage, and the motor and the bearing are easy to suddenly not rotate to extinguish the fire, and the device is described in more detail in the next patent. The principle of the rotary valve for high-frequency pulsation air pressure modulation of CN202110536994 is similar to the thinking of the aforementioned Bao-steel, and the rotary valve belongs to a plug valve structure with an open hole on a rotor, and is suitable for small air quantity. The rotary pulse valves of the aforementioned 3 patents all require motor dragging and frequently do not rotate suddenly, which limits their industrial application. The CN201821439407 low NOx pulsation gas combustion device with a rotary throttle valve is one of the closest patents of the application, and forms pulsation flow by continuously rotating a valve core similar to a butterfly valve on an air duct or a fuel channel to reduce NOx in the gas combustion process, and has the defects that the on-off ratio of pulsation gas flow cannot be adjusted, a motor is required to drive, the rotor stress is maximum when the motor is not completely closed, and the motor and a bearing are easily damaged due to the maximum torque. But such a valve is indeed the most practical. Most pulse valve pencils are used in trial production, when the vent hole is plugged, the air pressure presses the rotor towards the outlet direction, so that the rotor