Smoke generating method, system and infrared obscuration gas turbine smoke generator

Abstract

The present application relates to a smoke generating method, system and infrared shielding gas turbine smoke generator. The method comprises: controlling a compressor to deliver compressed air into a combustion chamber; controlling a fuel supply device to deliver a first preset amount of fuel into the combustion chamber, so that the fuel is incompletely combusted in the combustion chamber to form mixed flue gas with carbon black particles; and controlling a turbine to eject the mixed flue gas generated in the combustion chamber through a tail nozzle to form an infrared shielding smoke screen. The present application can solve the technical problem of large volume and heavy weight of the conventional smoke generator when the ejector section is arranged behind the tail nozzle.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of smoke generating technology, in particular to a smoke screen generating method and system and an infrared shielding gas turbine type smoke generator. BACKGROUND

[0002] The smoke generator, also known as a smoke generator or a smoke screen dispenser, is a device that generates smoke through mechanical means and is widely used in the field of smoke concealment. The core function of the smoke generator is to convert liquid or solid smoke generating agents into smoke through a specific mechanism to form a large-area shielding effect. In traditional infrared gas turbine type smoke generators, some technical solutions set an injection section (including an injection cooling section, a graphite powder injection section, a graphite powder storage tank, and a graphite powder feeding device) behind the tail nozzle. While introducing ambient air to cool the gas, graphite powder is injected into the mixed gas stream to form an infrared shielding smoke screen for concealing infrared images. However, the weight and volume of the injection section are very high, which causes problems such as increased weight, limited flexibility, exposed volume risk, slowed deployment speed, and limited use scenarios when the smoke generator is applied to the field of smoke concealment. SUMMARY

[0003] The present application provides a smoke screen generating method, system and infrared shielding gas turbine type smoke generator, which can solve the technical problem of large volume and heavy weight of the smoke generator in the traditional technology when the injection section is set behind the tail nozzle.

[0004] To solve the above technical problems, the present application provides a smoke screen generating method applied to an infrared shielding gas turbine type smoke generator. The infrared shielding gas turbine type smoke generator includes a compressor, a combustion chamber, a turbine, a tail nozzle connected in sequence, and a fuel supply device connected with the combustion chamber.

[0005] The smoke screen generating method includes:

[0006] Controlling the compressor to deliver compressed air into the combustion chamber;

[0007] Controlling the fuel supply device to deliver a first preset amount of fuel into the combustion chamber, so that the fuel is incompletely combusted in the combustion chamber to form mixed smoke gas with carbon black particles;

[0008] Controlling the turbine to eject the mixed smoke gas generated in the combustion chamber through the tail nozzle to form an infrared shielding smoke screen.

[0009] Optionally, the controlling of the fuel supply device to deliver a first preset amount of fuel into the combustion chamber so that the fuel is incompletely combusted in the combustion chamber includes:

[0010] Controlling the fuel supply device to deliver a first preset amount of fuel into the main combustion zone of the combustion chamber;

[0011] controlling the first preset amount of fuel and the preset amount of air in the compressed air to generate an incomplete combustion reaction, so that part of the fuel is decomposed to form carbon black particles, and the other fuel is completely combusted to form high-temperature flue gas;

[0012] controlling the other air in the compressed air to mix with the carbon black particles and the high-temperature flue gas to form mixed flue gas with carbon black particles.

[0013] Optionally, when the control fuel supply device delivers the first preset amount of fuel into the combustion chamber for incomplete combustion of the fuel in the combustion chamber, the following relationship exists:

[0014] setting a preset flue gas generated by complete combustion of a second preset amount of fuel and the preset amount of air in the compressed air, and the outlet temperature of the combustion chamber when output is a first outlet temperature;

[0015] setting the outlet temperature of the mixed flue gas with carbon black particles when the combustion chamber is output as a second outlet temperature;

[0016] Therefore, when the control fuel supply device delivers the first preset amount of fuel into the combustion chamber for incomplete combustion of the fuel in the combustion chamber to form mixed flue gas with carbon black particles, the second outlet temperature is equal to the first outlet temperature.

[0017] Optionally, when the second outlet temperature is equal to the first outlet temperature, the following relationship exists:

[0018] setting the total heat generated by complete combustion of a second preset amount of fuel in the combustion chamber and the preset amount of air in the compressed air as a first fuel total heat, and setting the combustion efficiency when completely combusted as a first combustion efficiency;

[0019] setting the total heat generated by incomplete combustion of the first preset amount of fuel in the combustion chamber and the preset amount of air in the compressed air as a second fuel total heat, and setting the combustion efficiency when incompletely combusted as a second combustion efficiency;

[0020] Therefore, the product of the first fuel total heat and the first combustion efficiency is equal to the product of the second fuel total heat and the second combustion efficiency.

[0021] Optionally, setting the fuel-air ratio when a second preset amount of fuel is completely combusted in the combustion chamber and the preset amount of air as a first fuel-air ratio, and the first combustion efficiency is the combustion efficiency at the first fuel-air ratio;

[0022] setting the fuel-air ratio when the first preset amount of fuel is incompletely combusted in the combustion chamber and the preset amount of air as a second fuel-air ratio, and the second combustion efficiency is the combustion efficiency at the second fuel-air ratio.

[0023] Optionally, when the second outlet temperature is equal to the first outlet temperature, there is a relationship as follows:

[0024]

[0025] wherein:

[0026] is the first total fuel heat, in joules J; is the first fuel-air ratio, a dimensionless number; is the first combustion efficiency associated with the first fuel-air ratio;

[0027] is the second total fuel heat, in joules J; is the second fuel-air ratio, a dimensionless number; is the second combustion efficiency associated with the second fuel-air ratio.

[0028] Optionally, the fuel supply device comprises a fuel supply tank, and one or more fuel nozzles connected to the fuel supply tank;

[0029] The control of the fuel supply device to deliver the first preset amount of fuel to the main combustion zone of the combustion chamber comprises:

[0030] The control of the fuel supply tank of the fuel supply device to deliver fuel to the one or more fuel nozzles;

[0031] The control of the one or more fuel nozzles to deliver the first preset amount of fuel to the middle section and / or the rear section of the main combustion zone of the combustion chamber.

[0032] Optionally, the combustion chamber has a main combustion zone and a mixing zone;

[0033] The control of the compressor to deliver compressed air into the combustion chamber comprises:

[0034] The control of the compressor to deliver a preset amount of air in the compressed air directly to the inlet of the main combustion zone of the combustion chamber;

[0035] The control of the compressor to deliver other portions of air in the compressed air to the middle section and / or the rear section of the main combustion zone, and the mixing zone of the combustion chamber.

[0036] Optionally, the combustion chamber is any one of a straight-flow combustion chamber, a back-flow combustion chamber, a looped combustion chamber, and a ring-shaped combustion chamber;

[0037] The fuel is diesel or kerosene.

[0038] Furthermore, the present application also provides a smoke generating system applied to the infrared shielding gas turbine type smoke generator.

[0039] The smoke generating system comprises:

[0040] An air delivery control module for controlling the compressor to deliver compressed air into the combustion chamber;

[0041] A flue gas generation control module for controlling the fuel supply device to deliver a first preset amount of fuel into the combustion chamber, so that the fuel is incompletely combusted in the combustion chamber to form mixed flue gas with carbon black particles;

[0042] A flue gas ejection control module for controlling the turbine to eject the mixed flue gas generated in the combustion chamber through the tail nozzle to form an infrared shielding smoke screen.

[0043] Furthermore, the present application also provides an infrared shielding gas turbine type smoke generator comprising a compressor, a combustion chamber, a turbine, a tail nozzle, a fuel supply device connected with the combustion chamber, and a controller connected with the compressor, the combustion chamber, the turbine, the tail nozzle, and the fuel supply device.

[0044] The controller is used to realize the smoke generating method as described above.

[0045] Furthermore, the present application also provides a computer readable storage medium, wherein the computer readable storage medium stores computer execution instructions, and the computer execution instructions are used to realize all method steps or part of method steps of the smoke generating method as described above when executed by a processor.

[0046] The technical scheme provided by the present application has the following beneficial effects:

[0047] The first preset amount of fuel is injected into the combustion chamber through the fuel supply device, so that the fuel (i.e. the first preset amount of fuel) in the combustion chamber is incompletely combusted, the carbon black particles are generated by the high-temperature decomposition of part of the fuel in the combustion chamber, and the carbon black particles are mixed with the high-temperature flue gas generated by the combustion of the fuel to form mixed flue gas, which is generated, and the mixed flue gas mixed with the carbon black particles drives the turbine to work, and the mixed flue gas is discharged through the tail nozzle to form an infrared shielding smoke screen outside the smoke generator. In the infrared shielding smoke screen, the carbon black particles can be used to replace graphite powder to shield infrared images. In this way, without setting graphite powder related devices, the carbon black particles generated by the incomplete combustion of carbon hydrogen fuel and other fuels can be used to directly shield infrared images, and the volume and structural weight of the infrared shielding gas turbine type smoke generator are greatly reduced. BRIEF DESCRIPTION OF DRAWINGS

[0048] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the accompanying drawings needed to be used in the embodiments description will be briefly introduced. Obviously, the accompanying drawings in the following description only represent some of the embodiments of the present application, and for those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0049] Figure 1 A structural schematic diagram of a conventional infrared gas turbine smoke generator in the prior art;

[0050] Figure 2 A structural schematic diagram of an infrared shielding gas turbine smoke generator according to the embodiments of the present application Figure 1 ;

[0051] Figure 3 A structural schematic diagram of the fuel supply device of the infrared shielding gas turbine smoke generator according to the embodiments of the present application when injecting fuel into the combustion chamber;

[0052] Figure 4 A schematic diagram of the steps of the smoke generating method according to the embodiments of the present application;

[0053] Figure 5 A structural schematic diagram of the smoke generating system according to the embodiments of the present application;

[0054] Figure 6 A structural schematic diagram of the infrared shielding gas turbine smoke generator according to the embodiments of the present application Figure 1 . DETAILED DESCRIPTION

[0055] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without any creative effort belong to the scope of protection of the present application.

[0056] In the prior art, for example, Figure 1As shown, in some conventional infrared gas turbine smoke generators 10', an ejector section (including an ejector cooling section, a graphite powder ejector section 16, a graphite powder storage tank 18, and a graphite powder feeding device 17) is installed after the tail nozzle 14. While introducing ambient air to cool the gas, graphite powder is injected into the mixed airflow to form an infrared shielding smoke screen for shielding infrared images. However, the ejector section has a very high weight and volume ratio, which leads to increased weight, limited flexibility, increased risk of volume exposure, slower deployment speed, and limited application scenarios when using this smoke generator in smoke concealment applications. To solve the above technical problems, this invention provides a smoke screen generation method, system, and infrared shielding gas turbine smoke generator 10.

[0057] like Figure 4 As shown, the invention provides a method for generating a smoke screen, which is applied to an infrared-shielding gas turbine smoke generator 10. Figure 2 As shown, the infrared-shielded gas turbine smoke generator 10 may include a compressor 11, a combustion chamber 12, a turbine 13, and a tail nozzle 14 connected in sequence, as well as a fuel supply device 15 connected to the combustion chamber 12. The compressor 11, combustion chamber 12, turbine 13, and tail nozzle 14 can form a gas turbine engine. Air is drawn in and compressed by the compressor 11, and the compressed air is delivered to the combustion chamber 12, where it mixes and burns with fuel supplied to the combustion chamber 12 by the fuel supply device 15, generating high-temperature, high-pressure gas. This gas is then delivered to the turbine 13 for expansion and work, driving the turbine 13 to rotate and continuously powering the compressor 11. Finally, the smoke is discharged from the tail nozzle.

[0058] Specifically, such as Figure 4 As shown, the method for generating smoke can specifically include the following steps:

[0059] S100, control the compressor 11 to deliver compressed air into the combustion chamber 12;

[0060] S200, the fuel supply device 15 is controlled to supply a first preset amount of fuel into the combustion chamber 12, so that the fuel is incompletely burned in the combustion chamber 12 to form a mixed flue gas with carbon black particles;

[0061] S300, the control turbine 13 sprays the mixed flue gas generated in the combustion chamber 12 through the tail nozzle 14 to form an infrared shielding smoke screen.

[0062] The first preset amount of fuel is injected into the combustion chamber 12 by the fuel supply device 15, so that the fuel in the combustion chamber 12 is in an incomplete combustion state (i.e., the first preset amount of fuel), the high-temperature decomposition of part of the fuel in the combustion chamber 12 can generate carbon black particles, and the carbon black particles and the high-temperature flue gas generated by the combustion of the fuel are mixed to form mixed flue gas, which is generated and pushed by the turbine 13 to do work, and the mixed flue gas is discharged from the tail nozzle 14 to form an infrared shielding smoke screen. In the infrared shielding smoke screen, the carbon black particles can replace graphite powder to shield infrared images. Moreover, the fuel flow controlled by the method of the present application is in an extremely fuel-rich state, which is more than one order of magnitude higher than the amount of carbon black generated by the conventional engine in abnormal operating conditions, and the infrared shielding effect is positively correlated with the concentration of carbon black. Therefore, the carbon black smoke generated by the present application has infrared shielding capability.

[0063] In this way, the graphite powder injection section 16, graphite powder storage tank 18, and graphite powder feeding device 17 in the traditional infrared shielding gas turbine smoke generator 10' can be eliminated, i.e., without the need to set up graphite powder related devices, the carbon black particles generated by the incomplete combustion of hydrocarbon fuel and other fuels can be used to directly shield infrared images, greatly reducing the size and structural weight of the infrared smoke generator, and greatly reducing the system size, weight, and complexity.

[0064] In addition, the smoke generator made of an aero-engine used in the present application is a small turbojet engine, which does not have an outer channel and does not have fresh air supply after the turbine. When the first preset amount (i.e., excess) of fuel is provided, secondary combustion (i.e., afterburning) does not occur, so that it can generate sufficient carbon black particles to form mixed flue gas. In addition, even if the engine has an outer channel, since the present application organizes fuel supply in an extremely fuel-rich manner, the fuel-air ratio in the space area after the turbine is far beyond the fuel-rich flameout boundary, and there is no risk of secondary combustion, i.e., it is not easy to cause afterburning, and similarly, it can generate sufficient carbon black particles to form mixed flue gas.

[0065] Further, the combustion chamber 12 has a main combustion zone and a mixing zone. The main combustion zone is the core place of the combustion reaction of the combustion chamber 12, and the mixing zone is the key position for temperature regulation of the combustion chamber 12. Therefore, in step S100, the control of the compressor 11 to deliver compressed air into the combustion chamber 12 can further include:

[0066] S110, controlling the compressor 11 to directly deliver a preset amount of air in the compressed air to the inlet of the main combustion zone of the combustion chamber 12.

[0067] The outside air is sucked in by the compressor 11 (usually axial or centrifugal) and compressed to form compressed air. The compressor 11 can increase the pressure and temperature of the air to provide conditions for subsequent combustion. Moreover, the compressed air can be directly delivered into the main combustion zone of the combustion chamber 12 in part (i.e. the preset amount of air) to mix with the fuel injected into the main combustion zone and ignite to produce high-temperature and high-pressure flue gas (i.e. high-temperature flue gas).

[0068] Moreover, the main combustion zone of the combustion chamber 12 is the area where the fuel and compressed air are first mixed and the main combustion is completed, usually accounting for about 20% of the total air flow (i.e. the preset amount of air), and its core task is to maintain efficient combustion through stable flame while controlling pollutant generation.

[0069] S120, control the compressor 11 to deliver other parts of the compressed air to the middle or / and rear section of the main combustion zone and the mixing zone of the combustion chamber 12.

[0070] The compressed air can not only be directly delivered into the main combustion zone of the combustion chamber 12 in part for combustion, but also other parts of the air can be delivered into the middle or / and rear section of the main combustion zone and the mixing zone to mix with the high-temperature and high-pressure flue gas to reduce the temperature. Specifically, the mixing zone is located downstream of the main combustion zone, and the introduction of cooling air (accounting for about 80% of the total air flow) can achieve the effect of temperature reduction and flow field homogenization, which can reduce the high-temperature flue gas of 1800-2000K at the outlet of the main combustion zone to below 1500K which can be tolerated by the turbine 13, and can also eliminate the temperature gradient to ensure the uniformity of the inlet temperature distribution of the turbine 13 (non-uniformity coefficient ≤ 15%).

[0071] In addition, it should be pointed out that the present application sprays excess fuel (i.e. the first preset amount of fuel) into the main combustion zone of the combustion chamber 12, and controls the cracking process in the space area inside the main combustion zone away from the wall surface. In the wall surface area of the combustion chamber 12, the fuel will flow along the wall surface under the action of internal rotation, and due to the protection of excess fuel more than the chemical equivalence ratio, the wall surface temperature is lower than the cracking temperature, and the fuel will change into steam to shield the visible light spectrum and does not have the condition of cracking carbon deposition. Moreover, under normal circumstances, the fuel supply amount of the present application exceeds 5 times the chemical equivalence ratio, and except in the core area of the main combustion zone, under the action of high temperature, it promotes the generation of carbon black by cracking, and the wall surface does not have the condition of cracking and is difficult to generate carbon deposition. In addition, the typical maintenance interval of an aero-engine is about 1000 hours, and the maintenance interval of a smoke generator is generally about 1 hour. Even if carbon deposition occurs, it can be properly handled to ensure that the technical indicators are not affected.

[0072] Moreover, in step S200, the fuel supply device 15 is controlled to deliver the first preset amount of fuel into the combustion chamber 12 to incompletely combust the fuel in the combustion chamber 12, which can further comprise:

[0073] S210, controlling the fuel supply device 15 to deliver a first preset amount of fuel to the main combustion zone of the combustion chamber 12.

[0074] By delivering the first preset amount of fuel to the main combustion zone of the combustion chamber 12, the fuel is not completely combusted in the main combustion zone, and part of the fuel is incompletely combusted to form carbon black particles. In this embodiment, the first preset amount of fuel refers to the preset amount of fuel that exceeds the preset amount of air for complete combustion reaction.

[0075] S220, controlling the first preset amount of fuel to have an incomplete combustion reaction with the preset amount of air in the compressed air, so that part of the fuel is decomposed to form carbon black particles, and the other fuel is completely combusted to form high-temperature flue gas.

[0076] In the main combustion zone of the combustion chamber 12, part of the first preset amount of fuel has a complete combustion reaction with the preset amount of air to produce high-temperature flue gas, and another part of the fuel has an incomplete combustion reaction with the preset amount of air to produce carbon black particles.

[0077] S230, controlling the other air in the compressed air to mix with the carbon black particles and the high-temperature flue gas to form mixed flue gas with carbon black particles.

[0078] The compressed air is delivered into the main combustion zone and the mixing zone, part of the air is incompletely combusted to produce carbon black particles and high-temperature flue gas, and the other part of the air mixes with the carbon black particles and the high-temperature flue gas to obtain mixed flue gas with carbon black particles.

[0079] Further, the fuel supply device 15 can include a fuel tank, and one or more fuel nozzles connected to the fuel tank (as shown in Figure 4 Therefore, in step S210, controlling the fuel supply device 15 to deliver a first preset amount of fuel to the main combustion zone of the combustion chamber 12 can further include:

[0080] S212, controlling the fuel tank of the fuel supply device 15 to deliver fuel to one or more fuel nozzles.

[0081] Spraying fuel into the combustion chamber 12 through the fuel nozzle is an important part of the combustion system of the smoke generator, and the spraying process directly affects the combustion efficiency, stability, pollutant generation and system performance. By using multiple fuel nozzles, fuel can be uniformly sprayed into the main combustion zone of the combustion chamber 12 for sufficient combustion.

[0082] S214, controlling one or more fuel nozzles to deliver a first preset amount of fuel to the middle or / and rear section of the main combustion zone of the combustion chamber 12.

[0083] As shown in Figure 4As shown, the first preset amount of fuel is sprayed by the fuel nozzle towards the middle section or / and the rear section of the main combustion zone of the combustion chamber 12, so that part of the first preset amount of fuel is not fully combusted and is discharged, which is more conducive to generating carbon black particles.

[0084] Furthermore, in step S220, when the fuel supply device 15 is controlled to deliver the first preset amount of fuel into the combustion chamber 12 to make the fuel incompletely combusted in the combustion chamber 12, the following relationship exists:

[0085] The preset flue gas generated by the complete combustion of the second preset amount of fuel and the preset amount of air in the compressed air has a first outlet temperature when the combustion chamber 12 is output;

[0086] The mixed flue gas with carbon black particles has a second outlet temperature when the combustion chamber 12 is output;

[0087] Therefore, when the fuel supply device 15 is controlled to deliver the first preset amount of fuel into the combustion chamber 12 to form the mixed flue gas with carbon black particles, the second outlet temperature is equal to the first outlet temperature.

[0088] Generally, the injection of the first preset amount of fuel into the main combustion zone may cause the outlet temperature of the gas in the combustion chamber 12 to rise, thereby driving the working speed of the smoke generator to increase. However, in the layout of the present application, the working state of the smoke generator can be ensured to be almost unchanged, i.e., the outlet temperature of the gas in the combustion chamber 12 is basically unchanged. How to ensure that the outlet temperature of the gas in the combustion chamber 12 does not increase under the condition of injecting the first preset amount of fuel into the main combustion zone lies in the accurate balance of energy, so that the enthalpy increment caused by the multiple injection of fuel is just balanced with the heat absorbed by the fuel for evaporation and decomposition. That is, the oil-gas ratio of the main combustion zone can be increased to reduce the combustion efficiency, and the decrease in the combustion efficiency just offsets the increase in the fuel supply amount.

[0089] Furthermore, when the second outlet temperature is equal to the first outlet temperature, the following relationship exists:

[0090] The total heat generated by the complete combustion of the second preset amount of fuel and the preset amount of air in the compressed air in the combustion chamber 12 is set as a first fuel total heat, and the combustion efficiency when completely combusted is set as a first combustion efficiency;

[0091] The total heat generated by the incomplete combustion of the first preset amount of fuel and the preset amount of air in the compressed air in the combustion chamber 12 is set as a second fuel total heat, and the combustion efficiency when incompletely combusted is set as a second combustion efficiency;

[0092] Therefore, the product of the first fuel total heat and the first combustion efficiency is equal to the product of the second fuel total heat and the second combustion efficiency.

[0093] wherein the first total fuel heat is a total fuel heat of the gas turbine engine when the gas turbine engine is operated at the selected rotational speed (at which the fuel supply is the second preset amount) without generating the infrared smoke, and the first combustion efficiency is a combustion efficiency function of the combustion chamber 12 when the gas turbine engine is operated at the selected rotational speed without generating the infrared smoke.

[0094] The second total fuel heat is a total fuel heat of the gas turbine engine when the gas turbine engine generates the infrared smoke after increasing the fuel supply of the main combustion zone of the combustion chamber 12 (at which the fuel supply is the first preset amount), and the second combustion efficiency is a combustion efficiency function of the combustion chamber 12 when the gas turbine engine generates the infrared smoke after increasing the fuel supply of the main combustion zone of the combustion chamber 12 (at which the fuel supply is the first preset amount).

[0095] Furthermore, the fuel-air ratio of the second preset amount of fuel when combusted completely with the preset amount of air in the combustion chamber 12 is the first fuel-air ratio, and the first combustion efficiency is a combustion efficiency at the first fuel-air ratio.

[0096] The fuel-air ratio of the first preset amount of fuel when combusted incompletely with the preset amount of air in the combustion chamber 12 is the second fuel-air ratio, and the second combustion efficiency is a combustion efficiency at the second fuel-air ratio.

[0097] wherein the first fuel-air ratio is a fuel-air ratio of the combustion chamber 12 when the gas turbine engine is operated at the selected rotational speed (at which the fuel supply is the second preset amount) without generating the infrared smoke, and the first combustion efficiency is a combustion efficiency function related to the first fuel-air ratio;

[0098] The second fuel-air ratio is a fuel-air ratio of the combustion chamber 12 when the gas turbine engine generates the infrared smoke after increasing the fuel supply of the main combustion zone of the combustion chamber 12 (at which the fuel supply is the first preset amount), and the second combustion efficiency is a combustion efficiency function related to the second fuel-air ratio.

[0099] In the present embodiment, when the second outlet temperature is equal to the first outlet temperature, there is a relationship as follows:

[0100]

[0101] wherein:

[0102] is the first total fuel heat, in joule J; is the first fuel-air ratio, which is a dimensionless number; is the first combustion efficiency related to the first fuel-air ratio;

[0103] is the second total fuel heat, in joule J; is the second fuel-air ratio, which is a dimensionless number; a second combustion efficiency related to a second oil-gas ratio.

[0104] In the above relationship, only is an unknown number, and the relationship equation can be solved. corresponding to the fuel flow, and The corresponding total fuel supply (i.e., the total amount of the first preset amount of fuel) can be obtained. The fuel supply designed according to the control equation can generate carbon black for infrared shielding while almost not changing the working state of the engine, forming a conformal layout.

[0105] In addition, in step S300, the control turbine 13 sprays the mixed flue gas generated in the combustion chamber 12 through the tail nozzle 14 to form an infrared shielding smoke screen, which can further include:

[0106] S310, the high-temperature and high-pressure mixed flue gas generated in the combustion chamber 12 enters the turbine 13, so that the mixed flue gas drives the turbine 13 to rotate;

[0107] S320, control the rotating turbine 13 to drive the compressor 11 to work continuously through the transmission shaft, and make the mixed flue gas with carbon black particles discharged through the tail nozzle 14 to form an infrared shielding smoke screen with infrared shielding effect.

[0108] In this embodiment, the combustion chamber 12 can be any one of a straight-flow combustion chamber 12, a backflow combustion chamber 12, a loop combustion chamber 12, and a ring combustion chamber 12. In the straight-flow combustion chamber 12, the backflow combustion chamber 12, the loop combustion chamber 12, and the ring combustion chamber 12, the first preset amount of fuel can be incompletely combusted to form carbon black particles.

[0109] In this embodiment, the fuel can be diesel or kerosene. Hydrocarbon fuels (hydrocarbons) such as diesel or kerosene will undergo incomplete combustion when oxygen supply is insufficient during combustion, generating carbon black particles (soot), unburned hydrocarbons, and a small amount of carbon monoxide. These products facilitate the formation of smoke (infrared shielding smoke screen) in the air.

[0110] The present application proposes an infrared shielding type gas turbine smoke generator 10 and a corresponding smoke screen generation method, so that the combustion chamber 12 and the infrared smoke screen form a conformal layout. The space for generating carbon black from fuel decomposition is cancelled by using the existing components (combustion chamber 12) in the traditional smoke generator, and the carbon black particles generated by incomplete combustion of hydrocarbon fuel are directly used to shield infrared images, greatly simplifying the structure of the smoke generator, thereby greatly reducing the volume and structural weight of the infrared shielding type gas turbine smoke generator, and improving the tactical performance.

[0111] In addition, as Figure 5As shown in the drawings, the present application also proposes a smoke screen generating system 1000 applied to the infrared shielding gas turbine smoke generator 10. As shown in the drawings, Figure 2 The infrared shielding gas turbine smoke generator 10 can include a compressor 11, a combustion chamber 12, a turbine 13, an exhaust nozzle 14 connected in sequence, and a fuel supply device 15 connected with the combustion chamber 12.

[0112] Specifically, as shown in the drawings, Figure 5 The smoke screen generating system 1000 can include:

[0113] An air delivery control module 1002 for controlling the compressor 11 to deliver compressed air into the combustion chamber 12;

[0114] A smoke gas generation control module 1004 for controlling the fuel supply device 15 to deliver a first preset amount of fuel into the combustion chamber 12, so that the fuel is incompletely combusted in the combustion chamber 12 to form mixed smoke gas with carbon black particles;

[0115] A smoke gas ejection control module 1006 for controlling the turbine 13 to eject the mixed smoke gas generated in the combustion chamber 12 through the exhaust nozzle 14 to form an infrared shielding smoke screen.

[0116] The smoke screen generating system 1000 described in the present embodiment corresponds to the smoke screen generating method described above. The functions of each module in the smoke screen generating system 1000 are described in detail in the corresponding method embodiment, which will not be described here. Moreover, as shown in the drawings, Figure 2 The specific structure of the infrared shielding gas turbine smoke generator 10 is also described in detail in the smoke screen generating method described above, which will not be described here.

[0117] In addition, as shown in the drawings, Figure 6 The present application also proposes an infrared shielding gas turbine smoke generator 10, which includes a compressor 11, a combustion chamber 12, a turbine 13, an exhaust nozzle 14, a fuel supply device 15 connected with the combustion chamber 12, and a controller 19 connected with the compressor 11, the combustion chamber 12, the turbine 13, the exhaust nozzle 14, and the fuel supply device 15.

[0118] The controller 19 is used to implement the smoke screen generating method described above. That is, in the present embodiment, the controller 19 can be used to implement each step of the smoke screen generating method described above, and the specific implementation manner can refer to the specific content of the smoke screen generating method described above, which will not be described here. Moreover, as shown in the drawings, Figure 2 The specific structure of the infrared shielding gas turbine smoke generator is also described in detail in the smoke screen generating method described above, which will not be described here.

[0119] In addition, in some other embodiments, the present application provides a computer readable storage medium, in which computer execution instructions are stored, and the computer execution instructions are used to implement all method steps or part of method steps of the smoke generating method as described above when executed by a processor.

[0120] The present application can implement all or part of the above method, and can also be implemented by a computer program instructing related hardware. The computer program can be stored in a computer readable storage medium, and the computer program can implement the steps of the above method embodiments when executed by a processor. The computer program includes computer program code, which can be in the form of source code, object code, executable files or some intermediate forms, etc. The computer readable medium can include any entity or device capable of carrying the computer program code, recording medium, U disk, mobile hard disk, magnetic disk, optical disk, computer memory, read-only memory (ROM), random access memory (RAM), electrical carrier signal, telecommunication signal and software distribution medium, etc. It should be noted that the content of the computer readable medium can be appropriately increased or decreased according to the requirements of legislation and patent practice in the jurisdiction, for example, in some jurisdictions, according to legislation and patent practice, the computer readable medium does not include electrical carrier signals and telecommunication signals.

[0121] Based on the same inventive concept, the embodiments of the present application also provide an electronic device, including a memory and a processor, the memory stores a computer program running on the processor, and the processor implements all method steps or part of method steps of the above method when executing the computer program.

[0122] The processor can be a central processing unit (CPU), and can also be other general-purpose processors, digital signal processors (DSP), application specific integrated circuits (ASIC), ready programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor can be a microprocessor or any conventional processor, etc. The processor is the control center of the computer device, and connects all parts of the computer device through various interfaces and lines.

[0123] The memory can be used to store a computer program and / or a model, and the processor implements various functions of the computer device by running or executing the computer program and / or the model stored in the memory, and calling data stored in the memory. The memory can mainly include a program storage area and a data storage area, wherein the program storage area can store an operating system and at least one application program required by a function (for example, a sound playing function, an image playing function, etc.); and the data storage area can store data created according to use of the mobile phone (for example, audio data, video data, etc.). In addition, the memory can include a high-speed random access memory, and can also include a nonvolatile memory, for example, a hard disk, a memory, a plug-in hard disk, a SmartMedia Card (SMC), a Secure Digital (SD) card, a Flash Card, at least one disk storage device, a flash memory device, or other volatile solid-state memory devices.

[0124] Those skilled in the art should understand that the embodiments of the present application can be provided as a method, a system, a server or a computer program product. Therefore, the present application can take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Moreover, the present application can take the form of a computer program product implemented on one or more computer-usable storage media (including, but not limited to, disk storage and optical storage, etc.) containing computer-usable program code.

[0125] The present application is described with reference to flowcharts and / or block diagrams of the method, device (system), server and computer program product according to the embodiments of the present application. It should be understood that each flow and / or block in the flowcharts and / or block diagrams, and the combination of the flows and / or blocks in the flowcharts and / or block diagrams can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device produce a device implemented in the flowcharts and / or block diagrams. Figure 1 one or more flows and / or blocks Figure 1 an apparatus that implements the functions specified in the flow(s) or block(s).

[0126] These computer program instructions can also be stored in a computer-readable memory capable of directing the computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer-readable memory produce a manufactured product including instruction apparatus, which implements the flowcharts and / or block diagrams. Figure 1 one or more flows and / or blocks Figure 1 an apparatus that implements the functions specified in the flow(s) or block(s).

[0127] These computer program instructions can also be loaded into a computer or other programmable data processing devices, so that a series of operational steps are performed on the computer or other programmable devices to generate computer-implemented processes, thus the instructions executed on the computer or other programmable devices provide processes for implementing the flow Figure 1 one or more flows and / or blocks Figure 1 one or more blocks or steps of the functions specified in the flow

[0128] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application belong to the scope of the claims of the present application and their equivalent technologies, the present application also intends to include these modifications and variations.

Claims

1. A smoke generating method applied to an infrared shielding gas turbine smoke generator; the infrared shielding gas turbine smoke generator comprises a compressor, a combustion chamber, a turbine, an exhaust nozzle connected in sequence, and a fuel supply device connected with the combustion chamber; characterized in that the smoke generating method comprises: controlling the compressor to deliver compressed air into the combustion chamber; controlling the fuel supply device to deliver a first preset amount of fuel into the combustion chamber, so that the fuel is incompletely combusted in the combustion chamber to form mixed smoke gas with carbon black particles; controlling the fuel supply device to deliver a first preset amount of fuel into a main combustion area of the combustion chamber; controlling the first preset amount of fuel to generate an incomplete combustion reaction with a preset amount of air in the compressed air, so that part of the fuel is decomposed to form carbon black particles, and other fuel is completely combusted to form high-temperature smoke gas; controlling other air in the compressed air to mix with the carbon black particles and the high-temperature smoke gas to form mixed smoke gas with carbon black particles; controlling the turbine to spray the mixed smoke gas generated in the combustion chamber out of the exhaust nozzle to form an infrared shielding smoke screen; wherein, when the fuel supply device is controlled to deliver a first preset amount of fuel into the combustion chamber so that the fuel is incompletely combusted in the combustion chamber, the following relationship exists: a preset amount of fuel is set to be completely combusted with a preset amount of air in the compressed air to generate preset smoke gas, and the outlet temperature of the combustion chamber when output is a first outlet temperature; the outlet temperature of the mixed smoke gas with carbon black particles when output from the combustion chamber is a second outlet temperature; and the second outlet temperature is equal to the first outlet temperature when the fuel supply device is controlled to deliver a first preset amount of fuel into the combustion chamber so that the fuel is incompletely combusted in the combustion chamber to form mixed smoke gas with carbon black particles; when the second outlet temperature is equal to the first outlet temperature, the following relationship exists: a second preset amount of fuel is set to generate a total heat in the combustion chamber when completely combusted with a preset amount of air in the compressed air, and the combustion efficiency when completely combusted is a first combustion efficiency; a first preset amount of fuel is set to generate a total heat in the combustion chamber when incompletely combusted with a preset amount of air in the compressed air, and the combustion efficiency when incompletely combusted is a second combustion efficiency; and the product of the first fuel total heat and the first combustion efficiency is equal to the product of the second fuel total heat and the second combustion efficiency; a second preset amount of fuel is set to have a fuel-air ratio when completely combusted with a preset amount of air in the combustion chamber, and the first combustion efficiency is the combustion efficiency at the first fuel-air ratio; a first preset amount of fuel is set to have a fuel-air ratio when incompletely combusted with a preset amount of air in the combustion chamber, and the second combustion efficiency is the combustion efficiency at the second fuel-air ratio.

2. The smoke generating method according to claim 1, characterized by, when the second outlet temperature is equal to the first outlet temperature, the following relationship exists: ； wherein: Htot,1 is the first total fuel heat, in joules, J; R,1 is the first fuel-air ratio, a dimensionless number; η,1 is the first combustion efficiency associated with the first fuel-air ratio; H2is the second total fuel heat, in joules, J; is the second fuel gas ratio, dimensionless; is the second combustion efficiency associated with the second fuel gas ratio.

3. The smoke generating method according to claim 1, wherein the fuel supply device comprises a fuel supply tank and one or more fuel nozzles connected with the fuel supply tank; The fuel supply control device delivers a first preset amount of fuel to the main combustion zone of the combustion chamber, including: The fuel supply tank of the fuel supply device delivers fuel to one or more fuel injectors; Control one or more of the fuel injectors to deliver a first preset amount of fuel to the middle and / or rear section of the main combustion zone of the combustion chamber.

4. The smoke generating method according to claim 1, characterized by, The combustion chamber has a main combustion zone and a mixing zone; The control compressor delivers compressed air to the combustion chamber, including: The compressor is controlled to directly deliver a preset amount of compressed air to the inlet of the main combustion zone of the combustion chamber. The compressor is controlled to deliver other portions of the compressed air to the middle and / or rear sections of the main combustion zone of the combustion chamber, as well as the mixing zone.

5. The smoke generating method according to claim 1, wherein The combustion chamber is any one of a direct-flow combustion chamber, a recirculation combustion chamber, a ring-tube combustion chamber, or an annular combustion chamber; The fuel is either diesel or kerosene.

6. A smoke screen generating system applied to an infrared shielding gas turbine smoke generator; the infrared shielding gas turbine smoke generator includes a compressor, a combustion chamber, a turbine, and a tail nozzle connected in sequence, and a fuel supply device connected to the combustion chamber; characterized in that The smoke generation system includes: The air delivery control module is used to control the compressor to deliver compressed air into the combustion chamber; The flue gas generation control module is used to control the fuel supply device to deliver a first preset amount of fuel to the combustion chamber, causing incomplete combustion of the fuel in the combustion chamber to form a mixed flue gas containing carbon black particles; to control the fuel supply device to deliver a first preset amount of fuel to the main combustion zone of the combustion chamber; to control the first preset amount of fuel to undergo an incomplete combustion reaction with a preset amount of air in the compressed air, causing some of the fuel to decompose into carbon black particles and the rest of the fuel to burn completely to form high-temperature flue gas; and to control the remaining air in the compressed air to mix with the carbon black particles and the high-temperature flue gas to form a mixed flue gas containing carbon black particles. When the fuel supply device delivers the first preset amount of fuel to the combustion chamber, causing incomplete combustion of the fuel in the combustion chamber, the following relationship exists: The preset amount of fuel is set to be completely burned with a preset amount of air in the compressed air. The outlet temperature of the flue gas produced when it is discharged from the combustion chamber is the first outlet temperature. The outlet temperature of the mixed flue gas containing carbon black particles when it is discharged from the combustion chamber is the second outlet temperature. When the fuel supply device is controlled to supply the first preset amount of fuel into the combustion chamber, so that the fuel is incompletely burned in the combustion chamber to form a mixed flue gas containing carbon black particles, the second outlet temperature is equal to the first outlet temperature. When the second outlet temperature is equal to the first outlet temperature, the following relationship exists: The total heat generated by the complete combustion of a second preset amount of fuel in the combustion chamber with a preset amount of air in the compressed air is a first fuel total heat, and the combustion efficiency at complete combustion is a first combustion efficiency; the total heat generated by the incomplete combustion of the first preset amount of fuel in the combustion chamber with a preset amount of air in the compressed air is a second fuel total heat, and the combustion efficiency at incomplete combustion is a second combustion efficiency; the product of the first fuel total heat and the first combustion efficiency is equal to the product of the second fuel total heat and the second combustion efficiency; The air-fuel ratio at the complete combustion of a second preset amount of fuel in the combustion chamber with a preset amount of air is a first air-fuel ratio, and the first combustion efficiency is the combustion efficiency at the first air-fuel ratio; the air-fuel ratio at the incomplete combustion of the first preset amount of fuel in the combustion chamber with a preset amount of air is a second air-fuel ratio, and the second combustion efficiency is the combustion efficiency at the second air-fuel ratio; A flue gas ejection control module is configured to control the turbine to eject the mixed flue gas generated in the combustion chamber through a tail nozzle to form an infrared shielding smoke screen.

7. An infrared-shielded gas turbine smoking machine, characterized by The system comprises a compressor, a combustion chamber, a turbine, a tail nozzle, a fuel supply device connected to the combustion chamber, and a controller connected to the compressor, the combustion chamber, the turbine, the tail nozzle, and the fuel supply device. The controller is configured to implement the smoke screen generation method according to any one of claims 1-5.

8. A computer-readable storage medium, characterized in that, The computer readable storage medium stores computer execution instructions, and the computer execution instructions are configured to implement all method steps or part of the method steps of the smoke screen generation method according to any one of claims 1-5 when executed by the processor.

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