CN214196483U

CN214196483U - Rotary combustion jet engine

Info

Publication number: CN214196483U
Application number: CN202022964150.8U
Authority: CN
Inventors: 赵军
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-12-12
Filing date: 2020-12-12
Publication date: 2021-09-14
Anticipated expiration: 2030-12-12

Abstract

The utility model relates to the technical field of power machinery, in particular to a rotary combustion jet engine, which comprises a stator component and a rotor component, wherein the stator component comprises a casing, and the rotor component comprises an air compressor, a rotary fuel pump and a rotary combustion chamber which are rotationally connected inside the casing and are fixedly connected in sequence; the air compressor comprises a first centrifugal impeller, a centripetal impeller and a second centrifugal impeller which are sequentially connected to the hollow shaft; the rotary fuel pump comprises a centripetal fuel oil delivery pump connected to the hollow shaft, a sealing ring is arranged between a shell of the centripetal fuel oil delivery pump and a machine shell, and a fuel oil inlet communicated with a blade cavity of the centripetal fuel oil delivery pump is formed in the machine shell; different inlets of the pneumatic fuel nozzle are respectively communicated with fuel and high-pressure air; the side wall circumference equipartition of rotatory combustion chamber inclines the gas spout of spraying, and the side of casing is equipped with the gas vent that supplies waste gas exhaust. The engine has the advantages of high power density, light weight, high efficiency, simple structure, low manufacturing cost and high reliability.

Description

Rotary combustion jet engine

Technical Field

The utility model relates to a power machinery technical field, concretely relates to rotatory burning jet engine.

Background

The heat engines commonly used at present mainly comprise two types, namely a piston engine and a jet engine. The piston engine has more parts and heavy weight, the rotating speed which can be reached by the reciprocating motion work of the piston is limited, and although the oil consumption of the jet engine is higher than that of the piston engine at low speed, the jet engine has excellent high-speed performance, so that the jet engine quickly replaces the piston engine and becomes the mainstream of an aeroengine. However, the existing turbojet engine also has the defects of more parts, high price of the turbine blade, poor low-speed performance and the like, and the problem of high temperature resistance of the turbine blade.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the problem and not enough of the aforesaid existence, provide a rotatory burning jet engine, its power density is big, light in weight, efficient, simple structure, low in manufacturing cost, reliability height.

In order to realize the purpose of the utility model, the technical proposal of the utility model is that:

a rotary combustion jet engine comprises a stator part and a rotor part, wherein the stator part comprises a machine shell, and the rotor part comprises an air compressor, a rotary fuel pump and a rotary combustion chamber which are rotationally connected inside the machine shell and fixedly connected in sequence; the air compressor comprises a first centrifugal impeller, a centripetal impeller and a second centrifugal impeller which are sequentially connected onto a hollow shaft, wherein the air inlet position of the first centrifugal impeller is an air inlet at the front end of a casing, the air inlet position of the second centrifugal impeller is a plurality of air inlets on the casing at the rear end of the second centrifugal impeller, the air outlet position of the centripetal impeller is inside the hollow shaft, and the periphery of the hollow shaft is provided with the plurality of air inlets; the rotary fuel pump comprises a centripetal fuel oil delivery pump connected to a hollow shaft, a sealing ring is arranged between a shell of the centripetal fuel oil delivery pump and a machine shell, the sealing ring is fixed on the machine shell, a fuel oil inlet communicated with a blade cavity of the centripetal fuel oil delivery pump is arranged on the machine shell, an oil outlet end of the centripetal fuel oil delivery pump is communicated with a peripheral annular cavity of a pneumatic fuel oil nozzle arranged in the hollow shaft, a central hole inlet section of the pneumatic fuel oil nozzle is communicated with the interior of a front section of the hollow shaft, and an outlet of the peripheral annular cavity is communicated with a central hole outlet section; the rotary combustion chamber is characterized in that a radial sealing element is arranged between the rotary combustion chamber and the machine shell, a spark plug is arranged on the side wall of the rotary combustion chamber, a spark plug conducting ring penetrating out of the rotary combustion chamber is connected to the outer side of the spark plug, the spark plug conducting ring is in sliding contact with a carbon brush connected to the machine shell, inclined jet gas nozzles are evenly distributed on the side wall of the rotary combustion chamber in the circumferential direction, and an exhaust port for exhausting waste gas is formed in the side edge of the machine shell.

Further, in the above rotary combustion jet engine, the rotary combustion chamber includes a combustion chamber housing gradually reduced from the middle to the upper and lower ends, heat dissipation rib plates continuously extending from top to bottom are uniformly distributed in the circumferential direction of the inner wall of the combustion chamber housing, the spark plug is mounted on the side wall of the inlet of the combustion chamber housing, the gas nozzle is arranged in the circumferential direction of the middle of the combustion chamber housing, the pneumatic fuel nozzle is connected in the hollow shaft through a plurality of radial support plates, the lower end of the pneumatic fuel nozzle extends into the upper opening of the combustion chamber housing, and the upper end of the heat dissipation rib plate corresponds to the radial support plate of the outer ring of the pneumatic fuel nozzle.

Further, in the rotary combustion jet engine, the combustion chamber shell is in arc transition from the middle to the upper end and the lower end, a first cooling air channel is formed between adjacent heat dissipation rib plates on the inner wall of the upper portion and the inner wall of the lower portion of the combustion chamber shell, and a second cooling air channel is formed between adjacent heat dissipation rib plates on the inner wall of the middle portion of the combustion chamber shell.

Further, in the rotary combustion jet engine, a high-pressure plunger fuel pump is arranged in a blade cavity of the centripetal fuel delivery pump, an oil inlet of a plunger pump on the high-pressure plunger fuel pump is located inside the blade cavity of the centripetal fuel delivery pump, an oil outlet end of the high-pressure plunger fuel pump is communicated with a peripheral annular cavity of a pneumatic fuel nozzle arranged in the hollow shaft, a cam is arranged on the side edge of a pressurizing column of the high-pressure plunger fuel pump, and the cam is connected with a cam handle penetrating out of the casing.

Furthermore, in the rotary combustion jet engine, the oil outlet end of the high-pressure plunger fuel pump is sequentially connected with a one-way valve, a pressure stabilizing chamber and a pressure valve, the pressure stabilizing chamber is provided with an oil inlet and outlet hole, and a pressure stabilizing spring and a piston connected with the pressure stabilizing spring are arranged in the pressure stabilizing chamber.

Further, in the rotary combustion jet engine, the casing is configured as two symmetrical halves, and a plurality of bolt holes are arranged on the butt joint surface of the casing.

Further, in the above rotary combustion jet engine, a guide plate is disposed on the inner wall of the casing at a position corresponding to the first centrifugal impeller, the centripetal impeller, and the second centrifugal impeller.

Further, in the above rotary combustion jet engine, the hollow shaft is provided as a front section and a rear section, and is connected to the rotary combustion chamber through a flange and a bolt, the rear section hollow shaft is connected to the rotary combustion chamber through a flange and a bolt, the front section hollow shaft and the rotary combustion chamber are connected to the casing through a bearing, and the bearing is connected to the inside of the casing or the inside of the radial support rib in the casing.

The utility model discloses a rotatory combustion jet engine's beneficial effect:

compared with a piston engine, the rotary combustion jet engine has fewer parts, does not need a lubricating system, can continuously combust and jet, has stable work, small vibration, low noise, high thermal power efficiency and high achievable rotating speed; compare with current turbojet, do not need high temperature turbine part, do the turbine by rotatory combustion chamber concurrently, provide the moment of torsion, so the utility model discloses a rotatory jet-propelled engine power density is big, light in weight, efficient, simple structure, low in manufacturing cost, reliability height, if be used as automobile engine, can show the increase speed.

The utility model discloses a rotatory burning jet engine's combustion chamber is rotatory, sets up heat dissipation gusset through at combustion chamber casing inner wall to make the passageway between the heat dissipation gusset correspond with the cooling air of pneumatic fuel nozzle circumference, can leading-in cooling air and make cooling air form the air film at combustion chamber wall face shape, solve combustion chamber cooling and ablation problem effectively.

Drawings

Fig. 1 is a schematic structural view of a rotary combustion jet engine according to an embodiment of the present invention.

Fig. 2 is a schematic structural view of the oil supply principle of a rotary combustion jet engine according to an embodiment of the present invention.

Fig. 3 is a schematic top cross-sectional structural view of a rotary combustor in accordance with an embodiment of the present invention.

In the figure: the centrifugal fuel pump comprises a first centrifugal impeller 1, a centripetal impeller 2, a centripetal fuel oil delivery pump 3, a high-pressure plunger fuel pump 4, a cam 5, a rotary combustion chamber 6, a gas nozzle 7, a bearing 8, a flange 9, a spark plug 10, a spark plug conductive ring 11, a carbon brush 12, a pneumatic fuel oil nozzle 13, a casing 14, an air inlet 15, an air outlet 16, a cooling air channel I, a cooling air channel II, a cam handle 19, a fuel oil inlet 20, a bolt 21, a heat dissipation rib plate 22, a check valve 23, a centripetal fuel oil delivery pump blade cavity 24, a plunger pump oil inlet 28, a second centrifugal impeller 29, a bolt hole 30, a pressure stabilizing chamber 31, a piston 31-1, a pressure stabilizing spring 31-2, a guide plate 32, a radial sealing element 33, a pressure valve 34, a sealing ring 35 and a hollow shaft 36.

Detailed Description

A rotary combustion jet engine according to the invention will now be described in more detail by way of specific embodiments with reference to the accompanying drawings.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Referring to fig. 1-3, the present embodiment discloses a rotary combustion jet engine comprising a stator component and a rotor component, the stator component comprising a housing, the rotor component comprising an air compressor, a rotary fuel pump and a rotary combustion chamber rotatably connected inside the housing and fixedly connected in sequence; the air compressor comprises a first centrifugal impeller, a centripetal impeller and a second centrifugal impeller which are sequentially connected onto a hollow shaft, wherein the air inlet position of the first centrifugal impeller is an air inlet at the front end of a casing, the air inlet position of the second centrifugal impeller is a plurality of air inlets on the casing at the rear end of the second centrifugal impeller, the air outlet position of the centripetal impeller is the inside of the hollow shaft, the plurality of air inlets are arranged in the circumferential direction of the hollow shaft, air is firstly pressed to the circumferential side edges by the first centrifugal impeller and the second centrifugal impeller, and then the air enters the inside of the hollow shaft from the air inlets on the hollow shaft after being compressed by the centripetal impeller; the rotary fuel pump comprises a centripetal fuel oil delivery pump connected to a hollow shaft, a sealing ring is arranged between a shell of the centripetal fuel oil delivery pump and a machine shell, the sealing ring is fixed on the machine shell and used for preventing fuel oil from entering the machine shell, a fuel oil inlet communicated with a blade cavity of the centripetal fuel oil delivery pump is arranged on the machine shell, an oil outlet end of the centripetal fuel oil delivery pump is communicated with a peripheral annular cavity of a pneumatic fuel oil nozzle arranged in the hollow shaft, a central hole inlet section of the pneumatic fuel oil nozzle is communicated with the interior of a front section of the hollow shaft, an outlet of the peripheral annular cavity is communicated with a central hole outlet section, and air flowing at high speed drives the fuel oil to be sprayed out through jet flow; be equipped with radial seal spare between rotatory combustion chamber and the casing, radial seal spare can seal rotatory combustion chamber exhaust waste gas, prevent that waste gas from getting into in the gap between casing and the rotatory combustion chamber, rotatory combustion chamber lateral wall is equipped with the spark plug, the outside of spark plug is connected with the spark plug conducting ring of wearing out rotatory combustion chamber, spark plug conducting ring and the carbon brush sliding contact who connects on the casing, can guarantee that the spark plug circular telegram is igniteed, the lateral wall circumference equipartition of rotatory combustion chamber has the gas spout of slope injection, the slope sprays the gas, can drive the whole high-speed rotation of rotor part, the side of casing is equipped with the gas vent that supplies waste gas to discharge.

The working principle of the centripetal impeller and the centrifugal impeller in the embodiment is opposite, the centrifugal impeller is used for axially feeding air and radially discharging air, the gas is accelerated by the centrifugal force generated by the high-speed rotation of the centrifugal impeller, the kinetic energy is improved, and the kinetic energy is converted into pressure energy; the centripetal impeller is used for radially feeding air and axially discharging air, the air inlet is large, the air outlet is small, the centripetal impeller rotates at a high speed to compress air to the axis, the gas speed is increased, the kinetic energy is increased and is converted into pressure energy, the centripetal impeller compression is similar to the compression of a punching engine, the punching compression needs forward high-speed flight, and the centripetal impeller compression needs high-speed circumferential rotation compression.

In this embodiment, preferably, the rotary combustion chamber comprises a combustion chamber shell which is gradually reduced from the middle to the upper and lower ends, the inner wall of the combustion chamber shell is circumferentially and uniformly provided with heat dissipation rib plates which continuously extend from top to bottom, the spark plug is arranged on the side wall of the inlet of the combustion chamber shell, the gas nozzles are arranged in the middle circumference of the combustion chamber shell to facilitate diffusion of combustible mixture gas, the pneumatic fuel nozzle is connected in the hollow shaft through a plurality of radial support plates, the lower end of the heat dissipation rib plate extends into an upper opening of the combustion chamber shell, the upper end of the heat dissipation rib plate corresponds to a radial support plate of the outer ring of the pneumatic fuel nozzle, a small part of high-pressure air enters the pneumatic fuel nozzle from the middle part, a large part of high-pressure air enters the space between the heat dissipation rib plates to cool the combustion chamber shell, a large part of air cools the combustion chamber and finally enters the combustion chamber to participate in combustion, namely, the air is preheated and then continuously mixed with fuel to combust, so that the fuel is fully combusted.

In this embodiment, specifically, the combustion chamber shell is in arc transition from the middle to the upper and lower ends, a first cooling air channel is formed between adjacent heat dissipation rib plates on the inner wall of the upper portion and the inner wall of the lower portion of the combustion chamber shell, and a second cooling air channel is formed between adjacent heat dissipation rib plates on the inner wall of the middle portion of the combustion chamber shell.

In this embodiment, preferably, a high-pressure plunger fuel pump is arranged in a vane cavity of the centripetal fuel delivery pump, an oil inlet of a plunger pump on the high-pressure plunger fuel pump is positioned inside the vane cavity of the centripetal fuel delivery pump, an oil outlet end of the high-pressure plunger fuel pump is communicated with a peripheral annular cavity of a pneumatic fuel nozzle arranged in the hollow shaft, a cam is arranged on a side edge of a pressurizing column of the high-pressure plunger fuel pump, the cam is connected with a cam handle penetrating out of the casing, when a plurality of high-pressure plunger pumps in the centripetal fuel delivery pump rotate at high speed along with the centripetal fuel delivery pump, pressurizing columns on the high-pressure plunger pumps are sequentially compressed by the cam to increase fuel pressure, the other end of the cam handle penetrates out of the casing, the high-pressure plunger fuel pump can further increase fuel pressure, the angle of the cam handle can be conveniently adjusted outside the casing, thereby controlling the size of the throttle, and the size, the cam handle is a throttle controller and is used for adjusting the size of the throttle and stopping the engine.

In the embodiment, preferably, the oil outlet end of the high-pressure plunger fuel pump is sequentially connected with a one-way valve, a pressure stabilizing chamber and a pressure valve, the one-way valve enables fuel to flow only in one direction, the pressure stabilizing chamber is provided with an oil inlet and outlet hole, a pressure stabilizing spring and a piston connected with the pressure stabilizing spring are arranged in the pressure stabilizing chamber, the gap is formed between a cam and a pressurizing column in a rotating contact manner, the oil supply pressure is unstable, the pressure stabilizing chamber is arranged between the outlet of the high-pressure plunger fuel pump and the one-way valve, the fluctuation of the oil supply pressure can be reduced, when the high-pressure plunger fuel pump presses the fuel into the space between the outlet of the high-pressure plunger fuel pump and the one-way valve, the fuel pressure acts on the piston of the pressure stabilizing chamber, the piston moves to compress the pressure stabilizing spring, when the high-pressure plunger fuel pump does not press oil, the pressure is reduced, the pressure stabilizing spring restores to reset the piston, and the oil pressure between the outlet of the high-pressure plunger fuel pump and the one-way valve is stable; the pressure valve is arranged to ensure that when the fuel pumped by the high-pressure plunger fuel pump reaches a certain pressure and the fuel pressure is higher than the pressure of the pressure valve, the fuel flows into the pneumatic fuel nozzle through the pressure valve, and when the fuel pressure is lower than the pressure of the pressure valve, the fuel does not flow out.

In this embodiment, preferably, the casing sets up to bilateral symmetry's two half structures, is equipped with a plurality of bolt holes on the butt joint face of casing, convenient preparation.

In this embodiment, preferably, the inner wall of the casing is provided with guide plates corresponding to the first centrifugal impeller, the centripetal impeller and the second centrifugal impeller, and the guide plates are arranged to rectify air compressed by the centrifugal impeller compressor, so that the compressed air flows along channels between the guide plates, thereby facilitating further compression of the air by the centripetal impeller.

In this embodiment, specifically, the hollow shaft may be provided as a front section and a rear section, and is connected to the front section through a flange and a bolt, the rear section hollow shaft is connected to the rotary combustion chamber through a flange and a bolt, the front section hollow shaft and the rotary combustion chamber are connected to the casing through a bearing, and the bearing is connected to the casing or a radial support rib in the casing.

The operating principle of the rotary combustion jet engine of the present embodiment is: at the beginning, the starter drives the rotor part of the rotary combustion jet engine to rotate, air is compressed by a first centrifugal impeller and a second centrifugal impeller through an air inlet 15 and then enters a machine shell, then the air is further compressed by a centripetal impeller and then enters a hollow shaft and flows into a rotary combustion chamber for diffusion and temperature rise, meanwhile, fuel oil is pressurized by a centripetal fuel oil delivery pump through an oil inlet 20 and then is pumped into a peripheral annular cavity of a pneumatic fuel oil nozzle after being further pressurized by a high-pressure plunger fuel pump, high-pressure air in a central hole of the pneumatic fuel oil nozzle atomizes and mixes the fuel oil and the high-pressure air in the peripheral annular cavity through the jet flow effect and then sprays the fuel oil and the air into the rotary combustion chamber, the fuel oil and the air are mixed to form combustible mixed gas, the combustible mixed gas is ignited and combusted through a spark plug, high-temperature and high-pressure gas formed after the combustion is sprayed out through a, the rotary combustion jet engine enters a self-running working state and then is separated from a starter, and waste gas is finally exhausted from an exhaust port on the shell.

Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the description and in the claims does not indicate any order, quantity, or importance, but rather is used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not necessarily denote a limitation of quantity. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

The exemplary embodiments of the present invention have been described in detail with reference to the preferred embodiments, however, it will be understood by those skilled in the art that various modifications and changes may be made to the specific embodiments without departing from the concept of the present invention, and various combinations of the technical features and structures of the present invention may be implemented without departing from the scope of the present invention.

Claims

1. A rotary combustion jet engine is characterized by comprising a stator component and a rotor component, wherein the stator component comprises a machine shell, and the rotor component comprises an air compressor, a rotary fuel pump and a rotary combustion chamber which are rotationally connected inside the machine shell and fixedly connected in sequence;

the air compressor comprises a first centrifugal impeller, a centripetal impeller and a second centrifugal impeller which are sequentially connected onto a hollow shaft, wherein the air inlet position of the first centrifugal impeller is an air inlet at the front end of a casing, the air inlet position of the second centrifugal impeller is a plurality of air inlets on the casing at the rear end of the second centrifugal impeller, the air outlet position of the centripetal impeller is inside the hollow shaft, and the periphery of the hollow shaft is provided with the plurality of air inlets;

the rotary fuel pump comprises a centripetal fuel oil delivery pump connected to a hollow shaft, a sealing ring is arranged between a shell of the centripetal fuel oil delivery pump and a machine shell, the sealing ring is fixed on the machine shell, a fuel oil inlet communicated with a blade cavity of the centripetal fuel oil delivery pump is arranged on the machine shell, an oil outlet end of the centripetal fuel oil delivery pump is communicated with a peripheral annular cavity of a pneumatic fuel oil nozzle arranged in the hollow shaft, a central hole inlet section of the pneumatic fuel oil nozzle is communicated with the interior of a front section of the hollow shaft, and an outlet of the peripheral annular cavity is communicated with a central hole outlet section;

the rotary combustion chamber is characterized in that a radial sealing element is arranged between the rotary combustion chamber and the machine shell, a spark plug is arranged on the side wall of the rotary combustion chamber, a spark plug conducting ring penetrating out of the rotary combustion chamber is connected to the outer side of the spark plug, the spark plug conducting ring is in sliding contact with a carbon brush connected to the machine shell, inclined jet gas nozzles are evenly distributed on the side wall of the rotary combustion chamber in the circumferential direction, and an exhaust port for exhausting waste gas is formed in the side edge of the machine shell.

2. A rotary combustion jet engine according to claim 1, characterized in that the rotary combustion chamber comprises a combustion chamber shell which is tapered from the middle to the upper and lower ends, the inner wall of the combustion chamber shell is circumferentially and uniformly provided with heat dissipation ribs which continuously extend from top to bottom, the spark plug is mounted on the side wall of the inlet of the combustion chamber shell, the gas nozzle is circumferentially arranged in the middle of the combustion chamber shell, the pneumatic fuel nozzle is connected in the hollow shaft through a plurality of radial support plates, the lower end of the pneumatic fuel nozzle extends into the upper opening of the combustion chamber shell, and the upper end of each heat dissipation rib corresponds to the radial support plate of the outer ring of the pneumatic fuel nozzle.

3. A rotary combustion jet engine according to claim 2, characterized in that the combustion chamber housing is in arc transition from the middle to the upper and lower ends, the channel between adjacent heat dissipation ribs on the inner wall of the upper part and the inner wall of the lower part of the combustion chamber housing is a first cooling air channel, and the channel between adjacent heat dissipation ribs on the inner wall of the middle part of the combustion chamber housing is a second cooling air channel.

4. A rotary combustion jet engine according to claim 1, wherein a high pressure plunger fuel pump is provided in the vane cavity of the centripetal fuel transfer pump, the plunger fuel inlet of the high pressure plunger fuel pump is located inside the vane cavity of the centripetal fuel transfer pump, the fuel outlet end of the high pressure plunger fuel pump communicates with the peripheral annular cavity of the pneumatic fuel nozzle provided in the hollow shaft, and the side of the pressurizing column of the high pressure plunger fuel pump is provided with a cam which is connected with a cam handle penetrating out of the casing.

5. A rotary combustion jet engine as claimed in claim 4 wherein the high pressure plunger fuel pump has its oil outlet end connected in series to a one way valve, a surge chamber and a pressure valve, the surge chamber having an oil inlet and outlet and a surge spring and a piston connected to the surge spring.

6. A rotary combustion jet engine as claimed in claim 1 wherein the casing is provided in two symmetrical halves, with bolt holes in the abutting faces of the casing.

7. A rotary combustion jet engine according to claim 1, wherein baffles are provided on the inner wall of the casing at positions corresponding to the first centrifugal impeller, the centripetal impeller and the second centrifugal impeller.

8. A rotary combustion jet engine according to claim 1, wherein the hollow shaft is arranged in front and rear sections and is connected by flanges and bolts, the rear section hollow shaft is connected to the rotary combustion chamber by flanges and bolts, the front section hollow shaft and the rotary combustion chamber are connected to the casing by bearings, and the bearings are connected to radial support ribs in the casing or in the casing.