CN102644932B - Metal powder fuel supply device - Google Patents

Abstract

The invention provides a metal powder fuel supply device. A metal powder grain, a piston and a transmission assembly are arranged in the metal powder grain chamber, the piston and transmission assembly are at the back end of the metal powder grain, the piston and the transmission assembly are driven by a motor, and a gas generator is arranged beside the metal powder grain chamber. The gas generator is equipped with a powder column that can be combusted to generate high-temperature gas. The front end of the gas generator is equipped with an igniter. The gas generator is connected to a gas channel externally. The annular gas collection chamber is connected with the annular nozzle. The invention can avoid the phenomenon of leftover drug; the grain adopts all-metal powder grain, and the metal filling ratio is large; the feeding of the grain is controlled by the piston, and the flow rate of the metal powder fuel can be controlled by adjusting the piston; the metal powder grain is controlled by high temperature For gas cutting fluidization, the fluidization quality of metal powder fuel can be controlled by adjusting the angle of the annular nozzle.

Description

A metal powder fuel supply device

technical field

The invention relates to a metal powder fuel supply device applied to a metal and water reaction system.

Background technique

At present, the combustion mechanism that produces high-temperature gas by the reaction of water and gas rich in active metal particles, and then works through the nozzle or turbine device has attracted people's attention. However, research in this field is still a brand-new topic in China, and some key technologies, such as the organizational form of combustion, the water intake method of the propulsion system and the distribution of supply, have not yet been well resolved. The traditional engine structure cannot complete the mixing process of water vapor and gas well, which greatly reduces the reaction rate and affects the engine performance. Efficiently mixing water vapor and gas, giving full play to their chemical properties, and releasing high energy in a short period of time is a bottleneck in the current research of this system.

Contents of the invention

The object of the present invention is to provide a metal powder fuel supply device that can fully fluidize and preheat the metal powder fuel, is efficient, reliable, and has little ablation to the ventilation pipe.

The purpose of the present invention is achieved like this:

The metal powder grain 2 and the piston and the transmission assembly 1 are arranged in the metal powder grain chamber, the piston and the transmission assembly 1 are at the rear end of the metal powder grain 2, the piston and the transmission assembly 1 are driven by a motor, and the metal powder grain chamber is arranged beside the metal powder grain chamber. There is a gas generator 3, and the gas generator 3 is equipped with a charge column that can be burned to generate high-temperature gas. The front end of the gas generator 3 is equipped with an igniter 4, and the gas generator 3 is externally connected to a gas channel 5. The front end of the metal powder charge storehouse is provided with a fluidization Chamber 8, gas channel 5 and fluidization chamber 8 are connected by annular gas collection chamber 6 and annular nozzle 7.

The end face of the piston and transmission assembly 1 is conical, and the cone angle of the cone is the same as the injection angle of the annular nozzle 7 .

The annular gas collecting chamber 6 and the annular nozzle 7 are made of a high temperature resistant ceramic material.

The invention adopts the method of powder blowing through slits to realize the supply of metal powder fuel, the piston pushes the metal powder grain to feed, and the metal powder grain is fluidized and preheated under the action of high-temperature gas generated by the gas generator. In order to make up for the shortcomings of low metal powder content and poor fluidization effect of the existing metal powder supply device, the present invention designs a new metal powder fuel supply device, which can not only fully fluidize and preheat the metal powder fuel, The flow rate and fluidization effect of metal powder fuel can also be adjusted by adjusting the feed speed of the piston and the injection angle of the annular nozzle.

The gist of the technical solution adopted by the present invention is that a conical piston is arranged at the rear end of the metal powder fuel to push the metal powder grain to realize feeding. A gas generator is installed next to the metal powder column. The high-temperature gas passes through the annular gas collection chamber and accelerates in the annular nozzle to cut, fluidize and preheat the metal powder column to enhance its combustion characteristics.

The metal powder is fluidized and preheated by slit blowing to improve the combustion performance. Pure metal powder can be used as the grain material to maximize the metal loading ratio. The cone angle of the piston is the same as the injection angle of the annular nozzle, which avoids the phenomenon of residual medicine. The annular gas collection chamber and the annular nozzle are integrally made of high-temperature resistant ceramic materials, which prevent the device from being ablated and damaged when the high-temperature gas is accelerated.

The beneficial effects of the present invention are: the cone angle of the piston is set reasonably, which avoids the phenomenon of leftover drug; the grain adopts all-metal powder grain, and the metal filling ratio is large; the feed of the grain is controlled by the piston, and the metal powder can be controlled by adjusting the piston. The flow rate of powdered fuel; the metal powder grain is cut and fluidized by high-temperature gas, and the fluidization quality of the metal powder fuel can be controlled by adjusting the angle of the annular nozzle.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is a diagram of the internal structure of the annular air collecting chamber and the annular nozzle.

Detailed ways

The present invention will be further described in conjunction with accompanying drawing:

Referring to FIG. 1 , the piston and transmission assembly 1 are arranged at the rear end of the metal powder grain 2 , and the piston and transmission assembly 1 move forward under the drive of the motor to push the metal powder grain 2 forward. A gas generator 3 is arranged beside the metal powder grain 2, and the grain is housed in the gas generator 3, which can burn to generate high-temperature gas. The front end of the gas generator 3 is equipped with an igniter 4, and after the igniter 4 is ignited, the gas generator 3 starts to work. The gas generator 3 is externally connected with a gas channel 5 , and the gas channel 5 and the fluidization chamber 8 are connected by an annular gas collection chamber 6 and an annular nozzle 7 . When the device starts to work, the igniter 4 ignites, the gas generator 3 starts to work, and generates a large amount of high-temperature gas. The high-temperature gas enters the annular gas collection chamber 6 through the gas pipeline 5. The annular gas collection chamber 6 can temporarily store gas and serve as an annular nozzle. 7 air supply. The high-temperature gas is accelerated in the annular nozzle 7 to form a high-temperature and high-speed gas flow, which is injected into the fluidization chamber 8 . At this time, the metal powder grain 2 is fed into the fluidization chamber 8 under the push of the piston and the transmission assembly 1, and the metal powder grain 2 is fluidized and preheated under the cutting action of the high-temperature and high-speed gas flow. Then it enters the combustion chamber of the engine to participate in combustion. The end face of the piston and transmission assembly 1 adopts a conical design, and its cone angle is the same as the injection angle of the annular nozzle 7 . The annular air collecting chamber 6 and the annular nozzle 7 are manufactured as a whole, and the material is high temperature resistant ceramic material.

FIG. 2 is the internal structure of the annular gas collecting chamber 6 and the annular nozzle 7 . When the device is working, the high-temperature gas is temporarily stored in the annular gas collection chamber 6, accelerated in the annular nozzle 7, and then enters the fluidization chamber. Sealing ring 9 can prevent the leakage of gas caused in the process of device work.

Claims (2)

1. a metal dust fuel supply device, it is characterized in that: metal dust powder column (2) and piston and transmission component (1) are set in metal dust powder column storehouse, piston and transmission component (1) are in metal dust powder column (2) rear end, piston and transmission component (1) are driven by motor, the other gas generator (3) that is provided with in metal dust powder column storehouse, the powder column that incendivity generates high-temperature fuel gas is housed in gas generator (3), gas generator (3) front end is equipped with igniter (4), the outside blast tube (5) that connects of gas generator (3), metal dust powder column storehouse front end arranges fluidising chamber (8), between blast tube (5) and fluidising chamber (8), by annular air collecting chamber (6), be connected with toroidal nozzle (7), piston and transmission component (1) end face is conical, described conical cone angle is identical with the jet angle of nozzle ring (7).

2. a kind of metal dust fuel supply device according to claim 1, is characterized in that: annular air collecting chamber (6) adopts high temperature ceramic material to make one with nozzle ring (7).