CN112211748B

CN112211748B - Wheel block type explosive column capable of simultaneously burning inside and outside

Info

Publication number: CN112211748B
Application number: CN202011093325.0A
Authority: CN
Inventors: 张群; 高耀红; 王紫欣; 王晓燕; 马晓曦
Original assignee: Northwestern Polytechnical University
Current assignee: Northwestern Polytechnical University
Priority date: 2020-10-14
Filing date: 2020-10-14
Publication date: 2022-07-29
Anticipated expiration: 2040-10-14
Also published as: CN112211748A

Abstract

The invention relates to a wheel block type grain structure with simultaneous combustion inside and outside, compared with a common grain structure, the common grain structure cannot realize the super-large thrust in a short time due to the internal combustion, the grain structure is formed by carrying out block treatment on the grain according to the shape of a wheel, and an oxidant basically realizes the full-aspect contact with the grain, so that the contact area of the grain and the oxidant in a combustion chamber of a rocket engine is increased, the increase of the combustion surface area promotes the combustion speed of the grain in the combustion chamber, the power of the rocket is increased, the large thrust is realized in a short time, and the maneuverability of the rocket is improved.

Description

Wheel block type explosive column capable of simultaneously burning inside and outside

Technical Field

The invention belongs to the technical field of rocket engine combustion chambers, and particularly relates to a novel design of an inner explosive column of a rocket engine combustion chamber.

Background

The rocket engine comprises a chemical rocket engine, a nuclear energy rocket engine, an electric energy rocket engine and a solar energy rocket engine according to the difference of energy types used when the engine works, wherein the rocket engine which depends on chemical energy as energy is the most mature engine with the most extensive application in the prior art.

At present, the basic performance and the development level of the rocket engine have high levels, the development of the rocket engine still provides great challenges for us, and the cross-over changes to be made are the consumption of fuel reduction, the pollution to the environment reduction, the structural size limitation of the whole size and the local structure, the development of various new technologies and the like.

In order to increase the thrust performance of the rocket engine, the combustion speed of the fuel charge plays an important role, and the combustion speed can be increased by various ways, wherein the combustion speed of the fuel charge is an important way. It is desirable to accelerate the reaction rate by increasing the contact area of the fuel charge with the oxidizing agent. The rocket engine utilizes impulse principle, and is an engine with propellant fuel and independent of external air, and the high-temperature high-pressure gas produced by combustion in the combustion chamber of the rocket engine can be sprayed out from the spray pipe.

Disclosure of Invention

The invention mainly carries out innovative design aiming at the grain structure of the solid rocket engine, and specifically comprises the following steps: the fuel grain inside the rocket engine combustion chamber is designed, in particular to a free filling type. The manufacturing of the explosive columns outside the shell is firstly completed, cutting and blocking treatment is carried out along the axial direction, the cut explosive columns are embedded on the fixed supporting part according to the specified requirements, and the space size among the explosive column blocks is required to meet the requirements. The oxidant entering the combustion chamber of the rocket engine is fully contacted with the fuel grain, and after the ignition work is finished, the fuel grain is rapidly combusted in the environment of the oxidant, so that great thrust is generated, the rocket is pushed to rapidly fly, and meanwhile, the environment of the rocket requiring great thrust is met.

Technical scheme

The invention aims to realize the design of an inner explosive column in a tail combustion chamber of a rocket engine.

The technical scheme of the invention is as follows:

the utility model provides a wheel blocking type grain that inside and outside simultaneous combustion which characterized in that: the inside of the rocket engine combustion chamber is provided with a circular array of grain structures, and a front and back supporting structure for fixing the grain structures.

The wheel block type explosive column capable of combusting inside and outside simultaneously is characterized in that: the grain structures in the combustion chamber of the rocket engine are distributed in a circular shape at equal intervals, and the interval between the grain structures is the minimum amount of oxidizing gas which can keep oxides to completely enter the side surface of the grain and the outer side of part of the grain.

The wheel block type explosive column capable of combusting inside and outside simultaneously is characterized in that: each drug column block is provided with three supporting parts which are linearly distributed along the drug column.

The wheel block type explosive column capable of combusting inside and outside simultaneously is characterized in that: two outer supporting parts of the supporting parts of each grain have proper distance from the end surface of the grain, and the middle supporting part is positioned in the middle of the grain.

The wheel block type explosive column capable of combusting inside and outside simultaneously is characterized in that: the medicine column adopts a free filling type, and the perfect combination of the medicine column and the supporting part is ensured

The invention has the following beneficial effects:

(1) the blocking of the explosive column realizes the full contact of the oxidant and the explosive column, accelerates the combustion speed and can realize high thrust in a short time. (2) The combustion of the inner and outer cylindrical surfaces accelerates the reaction speed and can realize high thrust in a short time. (3) The supporting parts of the explosive columns are distributed at intervals, so that on one hand, the stability of the explosive columns is realized, on the other hand, gaps are generated, the oxidant can enter, the combustion condition of the inner and outer explosive column surfaces is realized, and the reaction speed is accelerated.

Drawings

FIG. 1: is an integral three-dimensional drawing of a wheel block type grain which burns inside and outside simultaneously;

FIG. 2 is a schematic diagram: is a sectional view of a wheel block type grain which burns inside and outside simultaneously;

FIG. 3: is an appearance diagram of a wheel block type grain and a supporting part which burn inside and outside simultaneously;

description of the main element symbols:

Detailed Description

The invention will now be further described with reference to the accompanying drawings in which:

referring to fig. 1, a three-dimensional view of a wheel block type grain which burns inside and outside simultaneously, fig. 2 is a cross-sectional view of a wheel block type grain which burns inside and outside simultaneously, and fig. 3 is an appearance view of a wheel block type grain which burns inside and outside simultaneously and a supporting part, the contact surface between an oxidant and a fuel grain is enlarged, the reaction speed of combustion is increased, and the requirement of large thrust of a rocket in a short time is met.

The specific process comprises the following steps: in the combustion chamber of the rocket engine, an oxidant is sprayed into the whole combustion chamber and is fully contacted with the explosive column, after ignition, the flame quickly surrounds the whole explosive column, the explosive column is quickly combusted, generated high-temperature and high-pressure gas is sprayed out from the spray pipe, high-temperature and high-pressure high-speed airflow is sprayed out from the Laval spray pipe, and generated reverse thrust pushes the rocket to fly.

Claims

1. The utility model provides a wheel blocking type grain that inside and outside simultaneous combustion which characterized in that: the wheel block type explosive column comprises a flame cylinder wall, an explosive column supporting part and a block explosive column;

the partitioned explosive columns are cut into blocks along the axial direction by the explosive columns, the partitioned explosive columns are distributed in a wheel-shaped equidistant circular array in the rocket engine combustion chamber, the explosive column supporting part is a front and back supporting structure for fixing the partitioned explosive columns, and the partitioned explosive columns are embedded on the explosive column supporting part;

the flame barrel wall, the explosive column supporting part and the block explosive columns are sequentially arranged from outside to inside along the radial direction;

gaps between the side surfaces of the adjacent blocked explosive columns and gaps between the outer side surfaces of partial blocked explosive columns and the flame cylinder wall form a middle interval which is used for keeping the minimum amount of oxidizing gas entering the flame furnace;

Each block grain has three grain supporting parts, and the three grain supporting parts are linearly distributed along the axial direction of the block grain at intervals from front to back.

2. The vehicle wheel block type explosive column capable of combusting inside and outside simultaneously according to claim 1, which is characterized in that: two outer explosive column supporting parts of each block explosive column are at a proper distance from the end faces of the block explosive columns, and the middle explosive column supporting part is positioned in the middle of the block explosive columns.

3. The vehicle wheel block type explosive column capable of combusting inside and outside simultaneously according to claim 1, which is characterized in that: and a free filling type is adopted, so that the perfect combination of the partitioned grain and the grain supporting part is ensured.