CN102434281A - Dual-mode gas generation device and generation method - Google Patents

Abstract

The invention relates to a dual-mode gas generation device and a dual-mode gas generation method, which comprise a gas cylinder assembly, an air stop and pressure reducing valve, a fuel oil storage tank, a fuel oil stop and control valve, an air control valve, a gas generator and a control system, wherein gas in the gas cylinder assembly is divided into two paths through the air stop and pressure reducing valve to be output, one path is output to the fuel oil storage tank, the other path is output to the gas generation device through the air control valve, and the fuel oil storage tank is communicated with the gas generator through the fuel oil stop and control valve. The invention solves the technical problems that the existing gas generating device can only be used once, has higher cost and is complex to maintain, and the invention provides power for the ground start of an auxiliary system while being used as a power source for flight emergency, thereby simplifying the system.

Description

A kind of double mode gas generator and generation method

Technical field

The present invention relates to a kind of double mode gas generator and generation side; Particularly use air and kerosene as medium; Through the gas driven turbine, start the gas generator and the generation side that are repeatedly used that emergency power and hydraulic pressure ability are provided with aerial emergency system for aircraft floor.

Background technique

The gas generator that traditional aircraft adopts is independent system; Awing when the aircraft primary power supply or when the Main Hydraulic Pump system breaks down or generator stops; The emergency power system is preferential to use the pressurized air that extracts from airplane engine as power, if the available pressurized air of motor is not enough, the combustion gas of then using SP to decompose to produce is as replenishing; Drive turbine power plant, produce emergent hydraulic pressure and electric energy.

Adopt the gas generator of such scheme; Single uses when often only being emergent aloft, needs to change propellant tank or filling once more after being used to complete at every turn, and owing to adopted comparatively expensive catalysts and poisonous propellant agent; Except that cost was higher, working service was also comparatively complicated.

Summary of the invention

Existing gas generator can only single uses, cost is higher and safeguard the complicated technology problem in order to solve, and the present invention provides a kind of and is used for that aircraft floor starts and aerial emergent double mode gas generator and generation side.

Technical solution of the present invention:

A kind of double mode gas generator; Its special way is: comprise that cylinder package, air interception and reduction valve, fuel oil tank, fuel oil are by reaching control valve, air shut-off valve, gas generator and control system; Gas in the said cylinder package is divided into two-way output through air interception and reduction valve, and one the tunnel exports to the fuel oil tank, and the air shut-off valve of leading up to is exported to gasifier section; Said fuel oil tank is communicated with gas generator by reaching control valve through fuel oil

Said control system is used for measuring in real time secondary speed and fuel gas temperature, sends out the control air flux signal and send control fuel flow signal to fuel oil by reaching control valve according to fuel gas temperature to air shut-off valve according to secondary speed, and said control system is sent actuating signal to air interception and reduction valve.

Above-mentioned gas generator also comprises fuel feeding valve, and fuel oil is given the filling of fuel oil tank through fuel feeding valve.

Above-mentioned gas generator also comprises gas charging valve, and the compressed air system that master motor drives is connected with cylinder package through gas charging valve.

Above-mentioned air interception and the reduction valve in the reduction valve adopt the sealing configuration of metal to metal.

A kind of double mode combustion gas generation method, its special way is: may further comprise the steps:

1] early-stage preparations: system is in halted state; Air interception and reduction valve and fuel oil are closed by reaching control valve; Gas in the fuel oil tank is discharged from gas generator through air shut-off valve; When the tank internal pressure was lower than the supplying fuel pressure of aircraft, fuel oil was fills up in the fuel oil tank through fuel feeding valve;

2] ground starts: control system is sent actuating signal to air interception and reduction valve; Air interception and reduction valve are opened; Gas is divided into two-way output through air interception and reduction valve in the cylinder package; Lead up to fuel oil tank and fuel oil by and control valve export to gasifier section, the air shut-off valve of leading up to is exported to gasifier section, the angry high-temperature fuel gas that produces of gas valve blows turbine; The compressed air system that the aircraft master motor drives is given inflation in the cylinder package through gas charging valve;

3] aerial emergent: control system is measured secondary speed and fuel gas temperature in real time, and control system is sent out the control air flux signal according to secondary speed to air shut-off valve, sends control fuel flow signal to fuel oil by reaching control valve according to fuel gas temperature.

The present invention compared with prior art have a beneficial effect:

1, the present invention is in the power source emergent as flight, and also the ground startup for auxiliary system provides power, has simplified system;

2, combustion gas generation system involved in the present invention adopts double mode work, and ground starts the oxygen enrichment pattern that adopts, and reduces carbon distribution, and the aerial emergent rich combustion pattern that adopts increases the operating time;

3, the present invention adopts is nontoxic propellant agent, and security of system is good; Do not adopt expensive catalyzer and propellant agent, the cost of system is relatively low;

4, fuel oil of the present invention can be realized the repetition fuel up from aircraft fuel oil.

5, cylinder package of the present invention and fuel oil tank can obtain pressurized air and fuel oil from principal and subordinate's aircraft main system, and working service property is good, and can realize repeatedly repeating generating.

Description of drawings

Fig. 1 is the double mode combustion gas generation system of a present invention principle sketch;

Fig. 2 is the structure scheme of installation of the double mode combustion gas generation system of the present invention;

Wherein the description of drawings book is: the 1-cylinder package, and the 2-gas charging valve, 3-air interception and reduction valve, the 4-air shut-off valve, 5-fuel oil tank, the 6-fuel oil is by reaching control fuel tap, 7-gas generator, 8-turbine, 9-control system, 10-fuel feeding valve.

Embodiment

It is following to be applied to certain emergency power system implementation instance: double mode gas generator is bygas cylinder group 1,gas charging valve 2, air interception andreduction valve 3;Fuel oil tank 5,fuel feeding valve 10, air shut-offvalve 4, fuel oil are formed by reachingcontrol valve 6,gas generator 7, turbine 8 andcontrol system 9; Its set of systems prejudice Fig. 1, the mounting structure schematic representation is seen Fig. 2.

The gas cylinder group is adopted as two important actor shape graphite fiber winding gas cylinders; Pressure ends when reaching relief valves designs according in the system work process; Only require the pressure degree of regulation, do not have the work characteristics of closed condition, relief valves designs the structure of metal to metal; Spool, valve seat are oversimplified; And guarantee easily and realize spool, valve seat to neutrality, guarantee accurate control to the pressure adjustment process, also improved the smooth transition property in high pressure draught flow field simultaneously; Tank can be repeatedly used; Air shut-off valve, fuel oil end and control valve all adopts solenoid valve, and it is simple and reliable to work;

Gas generator adopts a bodily movement of practising Wushu flange connection structure.Gas generator body portion comprises inside and outside wall and thermal insulating layer, and inside and outside wall welds at outlet end, and inwall bears high temperature, and outer wall bearing strength, spark plug and inwall and interlayer are Spielpassung.The effect of heat insulation layer is that inwall was reached a high temperature in the very fast time, reduces the inwall carbon distribution, and heat can not pass to outer wall simultaneously, reduces the outer wall surface temperature, increases the intensity of outer wall, thereby reduces the architecture quality of whole outer wall.

For.This gas generator possesses two kinds of mode of operations, applicable emergency power system and the incorporate assembled scheme of accessory power system.This device not only can start and the self check process is that the startup of accessory power system provides power at aircraft floor.And when the aircraft primary power supply or when the Main Hydraulic Pump system breaks down or generator stops, the pressurized air that the utilization of aircraft emergency power system is stored in advance and fuel oil mixed combustion are blown turbine meet an urgent need hydraulic pressure and electric energy are provided, and start accessory power system simultaneously.When the master motor proper functioning; The air supply system that is equipped with on the aircraft can be the inflation of the gas cylinder in the combustion gas generation system automatically; Fuel supply system then can be full of the fuel oil tank of combustion gas generation system automatically, for next ground start or the flight emergency starting ready.

The own nontoxic pollution-free of air/Kerosene propellant that gas generator adopts, and can when normal flight, replenish voluntarily, need not the ground filling and safeguard.The combustion gas generation system adopts poor oil firing's pattern when aircraft floor starts, during work not carbon distribution, can be repeatedly used, shortened the war preparedness time of aircraft greatly, reduced ground working service facility scale; And adopting rich oil oxygen deficient combustion pattern aloft during urgency, the consumption of air is little, functional reliability is high, the time of emergency operation is long, can significantly alleviate the weight of emergency power system.

The principle of such scheme is: this system is divided into normal startup in ground and aerial emergency starting and prepares three kinds of mode of operations before the task again.

(1) ground normally starts: pilot's enable switch; Control system is sent instruction; Open air interception and reduction valve; Be divided into 2 the tunnel, the one tunnel after high-pressure air in the gas cylinder reduces pressure through reduction valve and lead to fuel oil tank supercharging kerosene fuel oil, the one tunnel as flowing to gas generator behind the oxygenant process air conditioning valve regulation flow; When opening air interception and reduction valve, open fuel oil by reaching control valve; Also flow into gas generator under the extruding of fuel oil air in the fuel oil tank and after regulating flow; Electric igniter on the gas generator is lighted the mixed gas of air and fuel oil; Gas generator produces high-temperature fuel gas and blows turbine with oil-poor pattern work.

(2) aerial emergency starting

Aerial emergency starting process and ground is normal to be started basic identically, and difference is gas generator with the work of rich oil pattern, with the minimizing comsumption of compressed air, thereby alleviates the architecture quality of whole system.In addition, for adapting to aerial working long hours, control system is measured secondary speed and turbine inlet temperature in real time, and feedback control air shut-off valve and fuel oil are by the spool aperture that reaches control valve.

(3) prepare before the task again

After system quit work, air interception and reduction valve were closed, and the pressurization gas in the fuel oil tank is discharged through gas generator, and when the tank internal pressure was lower than the supplying fuel pressure of aircraft, fuel oil was filled in the fuel oil tank through fuel feeding valve automatically once more.Flight is just often inflated in the gas cylinder through gas charging valve by the compressed air system that the aircraft master motor drives, and being that next ground is normal starts or aerial emergency start or ready.

Theory analysis and experimental study show, the aerial emergent power supply demand that starts with ground of the satisfiable aircraft of this combustion gas generation system.

The structure of the gas generator shown in the above-mentioned embodiment is a kind of situation of the present invention, and according to different requirement, gas generator assembly and physical dimension all can change.Those skilled in the art can carry out variously augmenting, improving and change under the situation of the structure that does not depart from claim and defined according to different designing requirements and design parameter, and therefore, the present invention is widely.

Claims (5)

1. double mode gas generator; It is characterized in that: comprise that cylinder package, air interception and reduction valve, fuel oil tank, fuel oil are by reaching control valve, air shut-off valve, gas generator and control system; Gas in the said cylinder package is divided into two-way output through air interception and reduction valve, and one the tunnel exports to the fuel oil tank, and the air shut-off valve of leading up to is exported to gasifier section; Said fuel oil tank is communicated with gas generator by reaching control valve through fuel oil

Said control system is used for measuring in real time secondary speed and fuel gas temperature, sends out the control air flux signal and send control fuel flow signal to fuel oil by reaching control valve according to fuel gas temperature to air shut-off valve according to secondary speed, and said control system is sent actuating signal to air interception and reduction valve.

2. double mode gas generator according to claim 1 is characterized in that: said gas generator also comprises fuel feeding valve, and fuel oil is given the filling of fuel oil tank through fuel feeding valve.

3. double mode gas generator according to claim 1 and 2 is characterized in that: said gas generator also comprises gas charging valve, and the compressed air system that master motor drives is connected with cylinder package through gas charging valve.

4. double mode gas generator according to claim 3 is characterized in that: the reduction valve in described air interception and the reduction valve adopts the sealing configuration of metal to metal.

5. double mode combustion gas generation method is characterized in that: may further comprise the steps:

1] early-stage preparations: system is in halted state; Air interception and reduction valve and fuel oil are closed by reaching control valve; Gas in the fuel oil tank is discharged from gas generator through air shut-off valve; When the tank internal pressure was lower than the supplying fuel pressure of aircraft, fuel oil was fills up in the fuel oil tank through fuel feeding valve;

2] ground starts: control system is sent actuating signal to air interception and reduction valve; Air interception and reduction valve are opened; Gas is divided into two-way output through air interception and reduction valve in the cylinder package; Lead up to fuel oil tank and fuel oil by and control valve export to gasifier section, the air shut-off valve of leading up to is exported to gasifier section, the angry high-temperature fuel gas that produces of gas valve blows turbine; The compressed air system that the aircraft master motor drives is given inflation in the cylinder package through gas charging valve;

3] aerial emergent: control system is measured secondary speed and fuel gas temperature in real time, and control system is sent out the control air flux signal according to secondary speed to air shut-off valve, sends control fuel flow signal to fuel oil by reaching control valve according to fuel gas temperature.

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