CN203478234U - Quick-start ground ultra-large three-component heater - Google Patents

Abstract

The utility model relates to a quick-start ground ultra-large three-component heater. The quick-start ground ultra-large three-component heater comprises an igniter, a casing, an air coupling, a two-component injector arranged in the casing, an air injector, a combustion cylinder, an oxygen coupling, a fuel coupling, and a throat, wherein the throat and the air coupling are respectively fixed at two ends of the casing; an air cavity is formed in the casing; the two-component injector includes an injector casing, a plurality of injection pipes uniformly distributed in the casing, and a separation plate for fixing the injection pipes; the separation plate divides the inner cavity of the injector casing into an oxygen cavity and a fuel cavity; the injection pipes are communicated with the oxygen cavity and the fuel cavity; the oxygen coupling is communicated with the oxygen cavity through an oxygen pipe; the fuel coupling is communicated with the fuel cavity through a fuel pipe; the air injector is fixed on the injector casing; the outlet of the air injector is located in the combustion cylinder. The heater provided by the utility model can realize quick start and stable combustion of three components, i.e. air, oxygen and liquid fuel, under the conditions of large flow rate and high temperature, and has the advantages of reliable structure and high combustion efficiency.

Description

A kind of ground ultra-large type three constituent element heaters of quick startup

Technical field

The utility model relates to a kind of ground ultra-large type three constituent element heaters of quick startup, can be used for Major Ground Test system, airbreathing motor pilot system particularly, as direct-connected in large flow high temperature or free jet formula pilot system, and high-temperature tunnel equipment.

Background technology

In recent years, fast development along with aeronautical and space technology, High Mach number, large spatial domain, high-performance air suction type power set become study hotspot both domestic and external, carrying out ground experiment is the important means of air suction type powerplant research, need to build advanced high temperature, large flow ground is direct-connected or free jet formula testing equipment, to meet the experimental study of power set.In the development process of the type ground-testing plant, in order to simulate the incoming flow air conditions of power set under state of flight, conventionally the front end at equipment arranges the technical problem that air heater solves mass flow air heating, and the direct mode of heating of fuel combustion is the heater that adopts one of conventional mode of heating.Along with the flight Mach number of air suction type power set and the increase of structure dimension, require the air mass flow of heater also will increase, temperature improves, and need to develop the test requirements document that superhuge heater meets power set.

Summary of the invention

Technical problem to be solved in the utility model is: ultra-large type heater is realized quick startup and the smooth combustion of air, oxygen and liquid fuel three constituent elements under large flow, hot conditions, and reliable in structure, and efficiency of combustion is high.

Technical solution of the present utility model is:

A kind of ground ultra-large type three constituent element heaters of quick startup, its special character is: compriseigniter 11,housing 10, pneumatic fitting, be successively set on double elements ejector filler, air ejector filler and combustion barrel inhousing 10, be arranged on oxygen connection and fuel joint and venturi on housing, described venturi is fixedly connected with one end of housing

The other end of described housing is connected with pneumatic fitting, forms air chamber 9 in described housing,

Described double elements ejector filler comprisesspray housing 31, be arranged on a plurality ofspray pipelines 32 of evenly arranging in housing and thefixing demarcation strip 36 of spray pipeline, described demarcation strip is divided intooxygen chamber 34 andfuel cavity 35 by spray housing inner chamber, described spray pipeline is communicated withoxygen chamber 34 andfuel cavity 35

Described oxygen connection is communicated withoxygen chamber 34 by oxygen hose 8, and described fuel joint is communicated withfuel cavity 35 by cartridge,

Described air ejector filler is fixed onspray housing 31, and the outlet of air ejector filler is positioned at combustion barrel.

Air ejector filler comprisesguide shell 63 and installingplate 64, one end of described guide shell is fixed onspray housing 31, the other end is connected with housing by installingplate 62, described guide shell is enlarging, on described guide shell, be provided with a plurality of singleflow air nozzles 61, on described installing plate, be provided with a plurality ofair tap holes 62, described combustion barrel is fixed on the junction ofguide shell 63 and installingplate 64, between describedcombustion barrel 63 and housing, form coolant flow channel, portion of air enters combustion barrel through singleflow air nozzle 61, portion of air enters coolant flow channel throughair tap hole 62 and carries out cooling.

Above-mentioned combustion barrel comprises a plurality of air film air rings that connect by corrugated plating.

The utility model compared with prior art tool has the following advantages:

1, heater of the present utility model combustion chamber diameter of phi 480mm, maximum stream flow 140kg/s, combustion chamber diameter surpasses 2 times of heater of the same type, flow is over 6 times, average fuel gas temperature surpasses 1700K, is the three constituent element air heaters that current domestic one-pipe heater flow is maximum, ignition temperature is the highest.

2, the utility model adopts fuel nitrogen flushing technology, has solved the front fuel atomization problem of heater starting, shortens fuel and builds the pressure time, has solved the quick starting problem of heater under large flow simultaneously, reduces the risk that starting pressure peak appears in heater.

Accompanying drawing explanation

Fig. 1 is general structure schematic diagram of the present utility model;

Fig. 2 is double elements ejector filler structural representation of the present utility model;

Fig. 3 is air ejector structural representation of the present utility model.

The specific embodiment

As shown in Figure 1, a kind of ground ultra-large type three constituent element heaters of quick startup, compriseigniter 11,housing 10, pneumatic fitting 1, be successively set on double elements ejector filler 3,air ejector filler 6 and combustion barrel 5 inhousing 10, be arranged onoxygen connection 2 and fuel joint 7 and venturi 4 on housing, venturi 4 is fixedly connected with one end ofhousing 10, the other end of housing is connected with pneumatic fitting, in housing, form air chamber 9

As shown in Figure 2, double elements ejector filler comprisesspray housing 31, be arranged on a plurality ofspray pipelines 32 of evenly arranging in housing and thefixing demarcation strip 36 of spray pipeline, demarcation strip is divided intooxygen chamber 34 andfuel cavity 35 by spray housing inner chamber, spray pipeline is communicated withoxygen chamber 34 andfuel cavity 35, oxygen connection is communicated withoxygen chamber 34 by oxygen hose 8, fuel joint is communicated withfuel cavity 35 by cartridge, air ejector filler is fixed onspray housing 31, and the outlet of air ejector filler is positioned at combustionbarrel.Spray pipeline 32 quantity and arrangement mode can be adjusted according to the design parameter of heater.

As shown in Figure 3, air ejector filler comprisesguide shell 63 and installingplate 64, one end of guide shell is fixed onspray housing 31, the other end is connected with housing by installingplate 62, guide shell is enlarging, on guide shell, be provided with a plurality of singleflow air nozzles 61, on installing plate, be provided with a plurality ofair tap holes 62, combustion barrel is fixed on the junction ofguide shell 63 and installingplate 64, betweencombustion barrel 63 and housing, form coolant flow channel, portion of air enters combustion barrel through singleflow air nozzle 61, portion of air enters coolant flow channel throughair tap hole 62 and carries out cooling.Combustion barrel comprises a plurality of air film air rings that connect by corrugated plating.

Operation principle of the present utility model and the course of work are:

The increase of oxygen can promote the burning of fuel and air greatly, supplements the airborne oxygen consuming because of fuel combustion simultaneously, and the oxygen percentage composition that makes heater outlet combustion gas is suitable with air.

During the utility model work, oxygen is entered double elements ejector filler 3 oxygen chamber byoxygen inlet pipe 2 sprays into combustion barrel through spray pipeline, fuel is entered double elements ejector filler fuel cavity by fuel joint 7 sprays into combustion barrel through spray pipeline, air enters air chamber by air interface 1, part air sprays into combustion barrel by the singleflow air nozzle 61 ofair ejector 6, before starting, in fuel, be blown into nitrogen, oxygen, fuel and part air mix, utilizeelectric igniter 11 to light a fire, realize three constituent element reliable ignitions and start fast, each spray unit forms stable little torch, and form primary zone, center, realize the smooth combustion of three constituent elements, surplus air enters combustion barrel outer tunnel by theair tap hole 62 of air ejector, then by air film air ring 5 classification cooling combustion chamber interior walls, carry out blending with the combustion gas in primary zone, center simultaneously, guarantee that the performance parameters such as the air mass flow of heater outlet and temperature meet design requirement.

The utility model discloses a kind of ground ultra-large type three constituent element heaters of quick startup, this heater can be used for Major Ground Test system, airbreathing motor pilot system particularly, as direct-connected in large flow high temperature or free jet formula pilot system, and high-temperature tunnel equipment.Described heater is comprised of head, body portion, double elements ejector filler, air sparge ring, air film air ring, oxygen inlet pipe and fuel inlet tube, adopt air, oxygen and liquid fuel (kerosene or other hydrocarbon fuel) three constituent element combustion systems to heat normal temperature air, make the flow of air and temperature reach predetermined value.The flow of this heater is large especially, temperature is high, efficiency of combustion is high, structural design is ingenious, reliability is high.

Claims (3)

1. ground ultra-large type three constituent element heaters that start fast, it is characterized in that: comprise igniter (11), housing (10), pneumatic fitting, be successively set on housing (10) interior double elements ejector filler, air ejector filler and combustion barrel, be arranged on oxygen connection and fuel joint and venturi on housing, described venturi is fixedly connected with one end of housing

The other end of described housing is connected with pneumatic fitting, forms air chamber (9) in described housing,

Described double elements ejector filler comprises spray housing (31), be arranged on a plurality of spray pipelines (32) of evenly arranging in housing and the fixing demarcation strip of spray pipeline (36), described demarcation strip is divided into oxygen chamber (34) and fuel cavity (35) by spray housing inner chamber, described spray pipeline is communicated with oxygen chamber (34) and fuel cavity (35)

Described oxygen connection is communicated with oxygen chamber (34) by oxygen hose (8), and described fuel joint is communicated with fuel cavity (35) by cartridge,

It is upper that described air ejector filler is fixed on spray housing (31), and the outlet of air ejector filler is positioned at combustion barrel.

2. the ground ultra-large type three constituent element heaters of quick startup according to claim 1, it is characterized in that: air ejector filler comprises guide shell (63) and installing plate (64), one end of described guide shell is fixed on spray housing (31), the other end is connected with housing by installing plate (62), described guide shell is enlarging, on described guide shell, be provided with a plurality of single flow air nozzles (61), on described installing plate, be provided with a plurality of air tap holes (62), described combustion barrel is fixed on the junction of guide shell (63) and installing plate (64), between described combustion barrel (63) and housing, form coolant flow channel, portion of air enters combustion barrel through single flow air nozzle (61), portion of air enters coolant flow channel through air tap hole (62) and carries out cooling.

3. the ground ultra-large type three constituent element heaters of quick startup according to claim 1 and 2, is characterized in that: described combustion barrel comprises a plurality of air film air rings that connect by corrugated plating.

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