Smoke screen generation method and system and infrared shielding type gas turbine type smoke generator

Abstract

The invention relates to a smoke screen generation method and system and an infrared shielding type gas turbine type smoke generator. The method comprises the steps that a gas compressor is controlled to convey compressed air into a combustion chamber; a fuel oil supply device is controlled to convey a first preset amount of fuel oil into the combustion chamber, so that the fuel oil is incompletely combusted in the combustion chamber, and mixed flue gas with carbon black particles is formed; and a turbine is controlled to spray out the mixed smoke generated in the combustion chamber through an exhaust nozzle, and an infrared shielding smoke screen is formed. The technical problems that in the prior art, when an injection section is arranged behind a tail spray pipe, the smoke generator is large in size and heavy in weight can be solved.

Description

Technical Field

[0001] The present invention relates to the technical field of smoke generation, and in particular to a smoke screen generation method and system and an infrared shielding gas turbine type smoke generator. Background Art

[0002] A smoke generator, also known as a smoke generator or smoke screen applicator, is a device that mechanically generates smoke and is widely used in smoke concealment applications. The core function of a smoke generator is to convert liquid or solid smoke agents into smoke through a specific mechanism, creating a large-area obscuration effect. In traditional infrared gas turbine smoke generators, some technical solutions incorporate an ejector section (including an ejector cooling section, a graphite powder ejector section, a graphite powder storage tank, and a graphite powder feeding device) behind the tailpipe. While introducing ambient air to cool the gas, graphite powder is injected into the mixed airflow to form an infrared obscuration smoke screen, used to obscure infrared images. However, the weight and volume of the ejector section are very high, resulting in increased weight, limited flexibility, increased risk of volume exposure, slower deployment, and limited usage scenarios when using the smoke generator in smoke concealment applications. Summary of the Invention

[0003] The present invention provides a smoke screen generation method, system and infrared shielding gas turbine type smoke generator, which can solve the technical problem of large size and heavy weight when the smoke generator in the traditional technology is provided with an introduction section after the tail nozzle.

[0004] In order to solve the above technical problems, the present invention provides a smoke screen generation method applied to an infrared shielding gas turbine type smoke generator; the infrared shielding gas turbine type smoke generator comprises a compressor, a combustion chamber, a turbine, a tail nozzle connected in sequence, and a fuel supply device connected to the combustion chamber;

[0005] The smoke screen generation method comprises:

[0006] Control the compressor to deliver compressed air to 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 burned in the combustion chamber to form a mixed flue gas containing carbon black particles;

[0008] The turbine is controlled to eject the mixed flue gas generated in the combustion chamber through a tail nozzle to form an infrared shielding smoke screen.

[0009] Optionally, controlling the fuel supply device to deliver a first preset amount of fuel into the combustion chamber to cause incomplete combustion of the fuel in the combustion chamber includes:

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

[0011] controlling the first preset amount of fuel to produce an incomplete combustion reaction with the preset amount of air in the compressed air, causing a portion of the fuel to decompose to form carbon black particles and causing the remaining fuel to completely burn to form high-temperature flue gas;

[0012] Other air in the compressed air is controlled to mix with the carbon black particles and the high-temperature flue gas to form mixed flue gas containing carbon black particles.

[0013] Optionally, the fuel supply device is controlled to deliver a first preset amount of fuel into the combustion chamber, so that when the fuel is incompletely burned in the combustion chamber, the following relationship is maintained:

[0014] Setting the outlet temperature of 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 to be the first outlet temperature when the flue gas is output from the combustion chamber;

[0015] Setting the outlet temperature of the mixed flue gas containing carbon black particles when outputting the combustion chamber to a second outlet temperature;

[0016] When the fuel supply control device delivers a first preset amount of fuel to the combustion chamber, causing the fuel to be incompletely burned 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 the second preset amount of fuel in the combustion chamber with the preset amount of air in the compressed air as the first total heat of the fuel, and setting the combustion efficiency during complete combustion as the first combustion efficiency;

[0019] Setting the total heat generated by incomplete combustion of the first preset amount of fuel in the combustion chamber with the preset amount of air in the compressed air as the second total heat of fuel, and setting the combustion efficiency during incomplete combustion as the second combustion efficiency;

[0020] Then the product of the first total calorific value of the fuel and the first combustion efficiency is equal to the product of the second total calorific value of the fuel and the second combustion efficiency.

[0021] Optionally, the fuel-gas ratio when the second preset amount of fuel is completely burned with the preset amount of air in the combustion chamber is set as the first fuel-gas ratio, and the first combustion efficiency is the combustion efficiency under the first fuel-gas ratio;

[0022] The fuel-gas ratio when the first preset amount of fuel is incompletely burned with the preset amount of air in the combustion chamber is set to a second fuel-gas ratio, and the second combustion efficiency is the combustion efficiency under the second fuel-gas ratio.

[0023] Optionally, when the second outlet temperature is equal to the first outlet temperature, the following relationship exists:

[0024]

[0025] Where:

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

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

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

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

[0030] Controlling the fuel supply device to deliver fuel from the fuel supply tank to one or more fuel nozzles;

[0031] One or more fuel nozzles are controlled to deliver a 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 compressor delivers compressed air to the combustion chamber, comprising:

[0034] Controlling the compressor to deliver a preset amount of compressed air directly to the inlet of the main combustion zone of the combustor;

[0035] The compressor is controlled to deliver the remaining portion of the compressed air to the middle section and / or 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-through combustion chamber, a recirculating combustion chamber, an annular combustion chamber, and an annular combustion chamber;

[0037] The fuel is diesel or kerosene.

[0038] In addition, the present invention also provides a smoke screen generating system, which is applied to an infrared shielding gas turbine type smoke generator; the infrared shielding gas turbine type smoke generator comprises a compressor, a combustion chamber, a turbine, a tail nozzle connected in sequence, and a fuel supply device connected to the combustion chamber;

[0039] The smoke screen generating system comprises:

[0040] An air delivery control module is used to control the compressor to deliver compressed air to the combustion chamber;

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

[0042] The flue gas ejection control module is used to control 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] In addition, the present invention also provides an infrared shielded gas turbine smoke generator, comprising 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;

[0044] Wherein, the controller is used to implement the smoke screen generation method as described above.

[0045] In addition, the present invention also provides a computer-readable storage medium, which stores computer-executable instructions. When the computer-executable instructions are executed by a processor, they are used to implement all or part of the method steps of the smoke screen generation method described above.

[0046] The beneficial effects brought about by the technical solution provided by the present invention include:

[0047] A first preset amount of fuel is injected into the combustion chamber via a fuel supply device, causing incomplete combustion of the rich fuel (i.e., the first preset amount of fuel) in the combustion chamber. The high temperature in the combustion chamber decomposes a portion of the fuel, producing carbon black particles. These particles mix with the high-temperature flue gas generated by the combustion of the fuel to form a mixed flue gas. This mixed flue gas, mixed with the carbon black particles, propels the turbine to produce work, and is then discharged from the smoke generator through a tailpipe to form an infrared shielding smoke screen. In the infrared shielding smoke screen, the carbon black particles can be used instead of graphite powder to shield infrared images. This eliminates the need for graphite powder-related equipment, and the carbon black particles generated by the incomplete combustion of hydrocarbon fuels, such as hydrocarbon fuels, can be used to directly shield infrared images, significantly reducing the size and weight of the infrared shielding gas turbine smoke generator. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0049] Figure 1 A simplified block diagram of the structure of a conventional infrared gas turbine smoke generator in conventional technology;

[0050] Figure 2 This is a schematic structural diagram of the infrared shielding gas turbine smoke generator according to an embodiment of the present invention. Figure 1 ;

[0051] Figure 3 This is a simplified structural diagram of the fuel supply device of the infrared shielding gas turbine smoke generator according to an embodiment of the present invention when injecting fuel into the combustion chamber;

[0052] Figure 4 This is a schematic diagram of the steps of the smoke screen generation method according to an embodiment of the present invention;

[0053] Figure 5 This is a simplified block diagram showing the structure of the smoke screen generating system according to an embodiment of the present invention;

[0054] Figure 6 This is a schematic structural diagram of the infrared shielding gas turbine smoke generator according to an embodiment of the present invention. Figure 2 . DETAILED DESCRIPTION

[0055] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0056] In traditional technologies, such as Figure 1As shown, in a conventional infrared gas turbine smoke generator 10', some technical solutions employ 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) after the tail nozzle 14. This section, while introducing ambient air to cool the gas, simultaneously injects graphite powder into the mixed airflow, forming an infrared-shielding smoke screen to obscure infrared images. However, the ejector section has a significant weight and volume ratio, leading to increased weight, limited flexibility, increased risk of volume exposure, slower deployment, and limited usage scenarios when the smoke generator is used for smoke concealment. To address the aforementioned technical issues, the present invention provides a smoke screen generation method, system, and infrared-shielding gas turbine smoke generator 10.

[0057] like Figure 4 As shown, the present invention provides a method for generating a smoke screen, which is applied to an infrared shielding gas turbine type 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, a tail nozzle 14, and a fuel supply device 15 connected to the combustion chamber 12. The compressor 11, combustion chamber 12, turbine 13, and tail nozzle 14 may form a gas turbine engine. The compressor 11 may draw in and compress air, which is then delivered to the combustion chamber 12. The compressed air is then mixed with fuel supplied to the combustion chamber 12 by the fuel supply device 15 and combusted to produce high-temperature, high-pressure combustion gas. The combustion gas may then be delivered to the turbine 13 for expansion and work, driving the turbine 13 to rotate and the compressor 11 to continue operating. Finally, the smoke is discharged from the tail nozzle.

[0058] Specifically, if Figure 4 As shown, the smoke screen generation method may specifically include the following steps:

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

[0060] S200, 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 burned in the combustion chamber 12 to form a mixed flue gas containing carbon black particles;

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

[0062] A first preset amount of fuel is injected into the combustion chamber 12 via the fuel supply device 15, causing incomplete combustion of the fuel-rich (i.e., the first preset amount) fuel in the combustion chamber 12. The high temperature within the combustion chamber 12 decomposes some of the fuel, producing carbon black particles. These particles mix with the high-temperature flue gas generated by the combustion of the fuel to form a mixed flue gas. This mixed flue gas, mixed with carbon black particles, drives the turbine 13 to produce work. The mixed flue gas is then discharged from the smoke generator through the tailpipe 14, forming an infrared shielding smoke screen. In the infrared shielding smoke screen, the carbon black particles can be used instead of graphite powder to block infrared images. Furthermore, the fuel flow controlled by the method proposed in the present invention is extremely fuel-rich, resulting in an amount of carbon black that is more than an order of magnitude higher than that generated by conventional engines under abnormal operating conditions. Since infrared shielding effectiveness is positively correlated with carbon black concentration, the carbon black smoke generated according to the present invention exhibits infrared shielding capabilities.

[0063] In this way, the graphite powder ejection 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, and there is no need to set up graphite powder-related devices. The carbon black particles produced by incomplete combustion of hydrocarbon fuels and other fuels can be used to directly shield the infrared image, greatly reducing the volume and structural weight of the infrared smoke generator, and thus greatly reducing the system size, weight and complexity.

[0064] In addition, the smoke generator made of the aircraft engine used in the present invention is a small turbojet engine. This type of engine has no duct and no fresh air supply behind the turbine. When the first preset amount (i.e., excess) of fuel is provided, secondary combustion (i.e., afterburning) will not occur, so that it can produce enough carbon black particles to form a mixed flue gas; in addition, even if the engine has a duct, because the present invention organizes the oil supply in an extremely oil-rich manner, in the spatial area behind the turbine, the oil-gas ratio has far exceeded the oil-rich flameout boundary, and there is no risk of secondary combustion, that is, it will not easily cause afterburning, and it can also produce enough carbon black particles to form a mixed flue gas.

[0065] Furthermore, the combustion chamber 12 has a main combustion zone and a mixing zone. The main combustion zone is the core of the combustion reaction in the combustion chamber 12, and the mixing zone is the key location for temperature control in the combustion chamber 12. Therefore, in step S100, controlling the compressor 11 to deliver compressed air into the combustion chamber 12 may 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 primary combustion zone of the combustion chamber 12 .

[0067] Compressor 11 (typically axial or centrifugal) draws in ambient air and compresses it to form compressed air. Compressor 11 raises the air's pressure and temperature, facilitating subsequent combustion. Furthermore, a portion (i.e., a predetermined amount) of this compressed air can be directly delivered into the primary combustion zone of the combustion chamber 12, where it mixes with the fuel injected into the primary combustion zone and ignites, resulting in intense combustion that produces high-temperature, high-pressure combustion 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 initially mixed and the main combustion is completed. It usually bears an air flow rate of about 20% of the total intake volume (that is, a preset amount of air). Its core task is to maintain efficient combustion through a stable flame while controlling the generation of pollutants.

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

[0070] After compression, the compressed air is not only partially delivered directly into the main combustion zone of the combustion chamber 12 for combustion, but other portions are also delivered to the middle and / or rear sections of the main combustion zone, as well as the blending zone, where it mixes with the high-temperature, high-pressure combustion gas to reduce its temperature. Specifically, the blending zone, located downstream of the main combustion zone, introduces cooling air (accounting for approximately 80% of the total intake air volume) to achieve temperature reduction and flow field homogenization. This reduces the high-temperature combustion gas at the main combustion zone outlet (1800-2000K) to below the 1500K tolerance of the turbine 13. It also eliminates temperature gradients, ensuring a uniform temperature distribution at the turbine 13 inlet (non-uniformity coefficient ≤ 15%).

[0071] Furthermore, it should be noted that the present invention injects an excess amount of fuel (i.e., a first predetermined amount of fuel) into the main combustion zone of the combustion chamber 12, confining the cracking process to a spatial region within the main combustion zone, away from the walls. Within the combustion chamber 12 walls, the fuel, under the influence of internal swirling flow, flows along the walls. Due to the presence of excess fuel, which exceeds the stoichiometric ratio by several times, the wall temperature is lower than the cracking temperature. This fuel undergoes a phase change to vapor, obscuring the visible light spectrum and eliminating the conditions for cracking and carbon deposition. Furthermore, under normal circumstances, the fuel supply in the present invention exceeds the stoichiometric ratio by more than five times. Except in the core of the main combustion zone, where high temperatures promote cracking and produce carbon black, cracking conditions near the walls are unavailable, making carbon deposition difficult. Furthermore, the typical maintenance interval for aircraft engines is approximately 1,000 hours, while the maintenance interval for smoke generators is generally around one hour. Even if carbon deposition occurs, it can be properly addressed to ensure that combat and technical indicators are not affected.

[0072] Furthermore, in step S200, 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 burned in the combustion chamber 12 may further include:

[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 a first predetermined amount of fuel to the primary combustion zone of the combustion chamber 12, the fuel is not completely burned in the primary combustion zone, and some of the fuel may be incompletely burned, thereby producing carbon black particles. In this embodiment, the first predetermined amount of fuel refers to a predetermined amount of fuel that exceeds the amount required for complete combustion with the predetermined amount of air.

[0075] S220: Control the first preset amount of fuel and the preset amount of air in the compressed air to produce an incomplete combustion reaction, so that part of the fuel decomposes to form carbon black particles and the rest of the fuel is completely burned to form high-temperature flue gas.

[0076] In the main combustion zone of the combustion chamber 12, a portion of the first preset amount of fuel reacts completely with the preset amount of air to produce high-temperature smoke, while another portion of the fuel reacts incompletely with the preset amount of air to produce carbon black particles.

[0077] S230: Control other 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.

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

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

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

[0081] Injecting fuel into the combustion chamber 12 through the fuel nozzles is a critical component of the smoke generator's combustion system. The injection process directly impacts combustion efficiency, stability, pollutant generation, and system performance. Multiple fuel nozzles allow fuel to be evenly injected into the primary combustion zone of the combustion chamber 12, ensuring efficient combustion.

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

[0083] like Figure 4As shown, a first preset amount of fuel is sprayed into the middle section and / or rear section of the main combustion zone of the combustion chamber 12 through a fuel nozzle, so that part of the first preset amount of fuel is discharged without being fully burned, which is more conducive to the generation of carbon black particles.

[0084] Furthermore, in step S220, when the fuel supply device 15 is controlled to deliver a first preset amount of fuel into the combustion chamber 12 so that the fuel is incompletely burned in the combustion chamber 12, the following relationship is maintained:

[0085] The outlet temperature of 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 when the flue gas is output from the combustion chamber 12 is set to be the first outlet temperature;

[0086] Setting the outlet temperature of the mixed flue gas containing carbon black particles when it exits the combustion chamber 12 to a second outlet temperature;

[0087] When the fuel supply device 15 is controlled to deliver 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 mixed flue gas containing carbon black particles, the second outlet temperature is equal to the first outlet temperature.

[0088] Generally speaking, injecting a first preset amount of fuel into the main combustion zone may cause the outlet temperature of the gas in the combustion chamber 12 to increase, thereby driving the operating speed of the smoke generator to increase. However, under the layout of the present invention, it can be ensured that the operating state of the smoke generator remains almost unchanged, that is, the outlet temperature of the gas in the combustion chamber 12 remains basically unchanged. How to ensure that the outlet temperature of the gas in the combustion chamber 12 does not increase under the condition that the first preset amount of fuel is injected into the main combustion zone, its core technology lies in the precise balance of energy, so that the enthalpy increase caused by the excessive injection of fuel is exactly balanced with the heat absorbed by the fuel through heat absorption, evaporation, and decomposition. That is, by increasing the oil-to-gas ratio in the main combustion zone and reducing the combustion efficiency, the decrease in combustion efficiency is exactly offset by the increase in the fuel supply.

[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 the first total heat of the fuel, and the combustion efficiency during the complete combustion is set as the first combustion efficiency;

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

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

[0093] The first total fuel calorific value may be the total fuel calorific value when the gas turbine engine operates only at a selected speed (at which time the fuel supply amount is the second preset amount) and no infrared smoke is generated; correspondingly, the first combustion efficiency may be a combustion efficiency function of the combustion chamber 12 when the gas turbine engine operates only at a selected speed and no infrared smoke is generated;

[0094] The second total calorific value of the fuel may be the total calorific value of the fuel when the gas turbine engine generates an infrared smoke screen after increasing the fuel supply to the main combustion zone of the combustion chamber 12 (the fuel supply at this time is the first preset amount); correspondingly, the second combustion efficiency may be the combustion efficiency function when the gas turbine engine generates an infrared smoke screen after increasing the fuel supply to the main combustion zone of the combustion chamber 12 (the fuel supply at this time is the first preset amount).

[0095] Furthermore, the fuel-gas ratio when the second preset amount of fuel is completely burned with the preset amount of air in the combustion chamber 12 is set as the first fuel-gas ratio, and the first combustion efficiency is the combustion efficiency under the first fuel-gas ratio;

[0096] The fuel-gas ratio when the first preset amount of fuel and the preset amount of air are incompletely combusted in the combustion chamber 12 is set as the second fuel-gas ratio, and the second combustion efficiency is the combustion efficiency under the second fuel-gas ratio.

[0097] The first fuel-gas ratio may be the fuel-gas ratio of the combustion chamber 12 when the gas turbine engine operates only at a selected speed (at which time the fuel supply amount is the second preset amount) and when no infrared smoke is generated, and the first combustion efficiency is a combustion efficiency function related to the first fuel-gas ratio;

[0098] The second oil-gas ratio may be the oil-gas ratio of the combustion chamber 12 when the gas turbine engine generates an infrared smoke screen after increasing the oil supply to the main combustion zone of the combustion chamber 12 (the oil supply at this time is the first preset amount), and the second combustion efficiency is a combustion efficiency function related to the second oil-gas ratio.

[0099] In this embodiment, when the second outlet temperature is equal to the first outlet temperature, the following relationship exists:

[0100]

[0101] Where:

[0102] is the total heat of the first fuel, in joules J; is the first oil-gas ratio, a dimensionless number; is a first combustion efficiency associated with the first fuel-air ratio;

[0103] is the total heat of the second fuel, in joules J; is the second oil-gas ratio, a dimensionless number; is the second combustion efficiency associated with the second fuel-air ratio.

[0104] In the above relationship, only is an unknown number, the relational equation can be solved. One-to-one correspondence with the fuel flow rate, the solution is The corresponding total fuel supply (i.e., the total amount of the first preset fuel supply) is obtained. The fuel supply designed according to this control equation can generate carbon black for infrared shielding, forming a conformal layout, while barely changing the engine's operating state.

[0105] In addition, in step S300, controlling the turbine 13 to eject the mixed flue gas generated in the combustion chamber 12 through the tail nozzle 14 to form an infrared shielding smoke screen may 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, controlling the rotating turbine 13 to drive the compressor 11 to continuously operate through the transmission shaft, and causing the mixed flue gas containing carbon black particles to be discharged through the tail nozzle 14, forming an infrared shielding smoke screen with infrared shielding effect.

[0108] In this embodiment, the combustion chamber 12 may be any one of a through-flow combustion chamber 12, a recirculating combustion chamber 12, an annular combustion chamber 12, and an annular combustion chamber 12. In any of the through-flow combustion chamber 12, the recirculating combustion chamber 12, the annular combustion chamber 12, and the annular combustion chamber 12, incomplete combustion of the first preset amount of fuel may be achieved, causing a portion of the fuel to decompose and form carbon black particles.

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

[0110] The present invention proposes an infrared shielding gas turbine smoke generator 10 and a corresponding smoke screen generation method, so that the combustion chamber 12 and the infrared smoke screen generation are conformally arranged, and the existing components (combustion chamber 12) in the traditional smoke generator are used as the space for fuel decomposition to generate carbon black, eliminating the graphite powder related devices, and using the carbon black particles generated by the incomplete combustion of hydrocarbon fuel to directly block the infrared image, which greatly simplifies the structure of the smoke generator, thereby greatly reducing the volume and structural weight of the infrared shielding gas turbine smoke generator and improving tactical effectiveness.

[0111] In addition, if Figure 5As shown, the present invention also provides a smoke screen generating system 1000, which is applied to an infrared shielding gas turbine type smoke generator 10. Figure 2 As shown, the infrared shielding type gas turbine smoke generator 10 may include a compressor 11, a combustion chamber 12, a turbine 13, a tail nozzle 14, and a fuel supply device 15 connected to the combustion chamber 12.

[0112] Specifically, if Figure 5 As shown, the smoke screen generation system 1000 may include:

[0113] The air delivery control module 1002 is used to control the compressor 11 to deliver compressed air to the combustion chamber 12;

[0114] The smoke generation control module 1004 is configured to control the fuel supply device 15 to deliver 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 mixed smoke containing carbon black particles;

[0115] The flue gas ejection control module 1006 is used to control the turbine 13 to eject the mixed flue gas generated in the combustion chamber 12 through the tail nozzle 14 to form an infrared shielding smoke screen.

[0116] The smoke screen generating system 1000 described in this embodiment corresponds to the above-mentioned smoke screen generating method. The functions of each module in the smoke screen generating system 1000 in this embodiment are described in detail in the corresponding method embodiment and will not be repeated here. Figure 2 As shown, the specific structure of the infrared shielding gas turbine smoke generator 10 is also described in detail in the above-mentioned smoke screen generation method, and will not be repeated here.

[0117] In addition, if Figure 6 As shown, the present invention also proposes an infrared shielding gas turbine smoke generator 10, including a compressor 11, a combustion chamber 12, a turbine 13, a tail nozzle 14, a fuel supply device 15 connected to the combustion chamber 12, and a controller 19 connected to the compressor 11, the combustion chamber 12, the turbine 13, the tail nozzle 14, and the fuel supply device 15.

[0118] The controller 19 is used to implement the above-mentioned smoke screen generation method. That is, in this embodiment, the controller 19 can be used to implement each step in the above-mentioned smoke screen generation method. The specific implementation method can refer to the specific content of the above-mentioned smoke screen generation method, which will not be repeated here. Figure 2 As shown, the specific structure of the infrared shielding gas turbine smoke generator is also described in detail in the above-mentioned smoke screen generation method, which will not be repeated here.

[0119] In addition, in other embodiments, the present invention provides a computer-readable storage medium, which stores computer-executable instructions. When the computer-executable instructions are executed by a processor, they are used to implement all or part of the method steps of the smoke screen generation method described above.

[0120] The present invention may implement all or part of the above-described method processes by instructing related hardware through a computer program. The computer program may be stored in a computer-readable storage medium. When executed by a processor, the computer program may implement the steps of each of the above-described method embodiments. The computer program includes computer program code, which may be in source code form, object code form, an executable file, or some intermediate form. Computer-readable media may include any entity or device capable of carrying computer program code, recording media, USB flash drives, removable hard drives, magnetic disks, optical disks, computer memory, read-only memory (ROM), random access memory (RAM), electric carrier signals, telecommunications signals, and software distribution media. It should be noted that the content of a computer-readable medium may be appropriately expanded or reduced based on the requirements of legislation and patent practice within a jurisdiction. For example, in some jurisdictions, based on legislation and patent practice, computer-readable media do not include electric carrier signals or telecommunications signals.

[0121] Based on the same inventive concept, an embodiment of the present invention also provides an electronic device, including a memory and a processor, wherein the memory stores a computer program running on the processor, and when the processor executes the computer program, all or part of the method steps in the above method are implemented.

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

[0123] The memory can be used to store computer programs and / or models. The processor implements the various functions of the computer device by running or executing the computer programs and / or models stored in the memory and accessing the data stored in the memory. The memory may primarily include a program storage area and a data storage area. The program storage area may store an operating system and at least one application required for a function (e.g., a sound playback function, an image playback function, etc.); the data storage area may store data generated based on the use of the mobile phone (e.g., audio data, video data, etc.). Furthermore, the memory may include high-speed random access memory and non-volatile memory, such as a hard disk, internal 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 storage device.

[0124] Those skilled in the art will appreciate that embodiments of the present invention may be provided as methods, systems, servers, or computer program products. Thus, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage and optical storage) containing computer-usable program code.

[0125] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), servers, and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowcharts and / or block diagrams, as well as combinations of processes 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 generate instructions for implementing the processes in the flowcharts and / or block diagrams. Figure 1 a process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0126] These computer program instructions may also be stored in a computer readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 a process or multiple processes and / or boxes Figure 1 The function specified in one or more boxes.

[0127] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing the instructions executed on the computer or other programmable device for implementing the process. Figure 1 a process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0128] Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if such changes and modifications fall within the scope of the claims and their equivalents, the present invention is intended to include such changes and modifications.

Claims

1. A smoke screen generation method, applied to an infrared-shielded gas turbine smoke generator; the infrared-shielded gas turbine smoke generator comprises a compressor, a combustion chamber, a turbine, a tail nozzle, and a fuel supply device connected to the combustion chamber. It is characterized by: The smoke screen generation method comprises: Control the compressor to deliver compressed air to 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 burned in the combustion chamber to form mixed flue gas containing carbon black particles; The turbine is controlled to eject the mixed flue gas generated in the combustion chamber through a tail nozzle to form an infrared shielding smoke screen.

2. The smoke screen generation method according to claim 1, characterized in that: The controlling the fuel supply device to deliver a first preset amount of fuel into the combustion chamber so that the fuel is incompletely burned in the combustion chamber includes: controlling the fuel supply device to deliver a first preset amount of fuel to the main combustion zone of the combustion chamber; controlling the first preset amount of fuel to produce an incomplete combustion reaction with the preset amount of air in the compressed air, causing a portion of the fuel to decompose to form carbon black particles and causing the remaining fuel to completely burn to form high-temperature flue gas; Other air in the compressed air is controlled to mix with the carbon black particles and the high-temperature flue gas to form mixed flue gas containing carbon black particles.

3. The smoke screen generation method according to claim 1, characterized in that: The fuel supply device is controlled to deliver a first preset amount of fuel into the combustion chamber, so that when the fuel is incompletely burned in the combustion chamber, the following relationship is achieved: Setting the outlet temperature of 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 to be the first outlet temperature when the flue gas is output from the combustion chamber; Setting the outlet temperature of the mixed flue gas containing carbon black particles when outputting the combustion chamber to a second outlet temperature; When the fuel supply control device delivers a first preset amount of fuel to the combustion chamber, causing the fuel to be incompletely burned in the combustion chamber to form mixed flue gas with carbon black particles, the second outlet temperature is equal to the first outlet temperature.

4. The smoke screen generation method according to claim 3, characterized in that: When the second outlet temperature is equal to the first outlet temperature, the following relationship exists: Setting the total heat generated by complete combustion of the second preset amount of fuel in the combustion chamber with the preset amount of air in the compressed air as the first total heat of the fuel, and setting the combustion efficiency during complete combustion as the first combustion efficiency; Setting the total heat generated by incomplete combustion of the first preset amount of fuel in the combustion chamber with the preset amount of air in the compressed air as the second total heat of fuel, and setting the combustion efficiency during incomplete combustion as the second combustion efficiency; Then the product of the first total calorific value of the fuel and the first combustion efficiency is equal to the product of the second total calorific value of the fuel and the second combustion efficiency.

5. The smoke screen generation method according to claim 4, characterized in that: The fuel-gas ratio when the second preset amount of fuel is completely burned with the preset amount of air in the combustion chamber is set as the first fuel-gas ratio, and the first combustion efficiency is the combustion efficiency under the first fuel-gas ratio; The fuel-gas ratio when the first preset amount of fuel is incompletely burned with the preset amount of air in the combustion chamber is set to a second fuel-gas ratio, and the second combustion efficiency is the combustion efficiency under the second fuel-gas ratio.

6. The smoke screen generation method according to claim 5, characterized in that: When the second outlet temperature is equal to the first outlet temperature, the following relationship exists: ； Where: is the total heat of the first fuel, in joules J; is the first oil-gas ratio, a dimensionless number; is a first combustion efficiency associated with the first fuel-air ratio; is the total heat of the second fuel, in joules J; is the second oil-gas ratio, a dimensionless number; is the second combustion efficiency associated with the second fuel-air ratio.

7. The smoke screen generation method according to claim 1, characterized in that: The fuel supply device includes a fuel supply tank, and one or more fuel nozzles connected to the fuel supply tank; The controlling fuel supply device to deliver a first preset amount of fuel to the main combustion zone of the combustion chamber comprises: Controlling the fuel supply device to deliver fuel from the fuel supply tank to one or more fuel nozzles; One or more fuel nozzles are controlled to deliver a first preset amount of fuel to the middle section and / or the rear section of the main combustion zone of the combustion chamber.

8. The smoke screen generation method according to claim 1, characterized in that: The combustion chamber has a main combustion zone and a mixing zone; The control compressor delivers compressed air to the combustion chamber, comprising: Controlling the compressor to deliver a preset amount of compressed air directly to the inlet of the main combustion zone of the combustor; The compressor is controlled to deliver the remaining portion of the compressed air to the middle section and / or rear section of the main combustion zone and the mixing zone of the combustion chamber.

9. The smoke screen generation method according to claim 1, characterized in that: The combustion chamber is any one of a straight-through combustion chamber, a recirculating combustion chamber, an annular combustion chamber, and an annular combustion chamber; The fuel is diesel or kerosene.

10. A smoke screen generating system for an infrared shielding gas turbine smoke generator; the infrared shielding gas turbine smoke generator comprises a compressor, a combustion chamber, a turbine, a tail nozzle connected in sequence, and a fuel supply device connected to the combustion chamber; It is characterized by: The smoke screen generating system comprises: An air delivery control module is used to control the compressor to deliver compressed air to the combustion chamber; a flue gas generation control module, configured to control the fuel supply device to deliver a first preset amount of fuel into the combustion chamber, so that the fuel is incompletely burned in the combustion chamber to form mixed flue gas containing carbon black particles; The flue gas ejection control module is used to control the turbine to eject the mixed flue gas generated in the combustion chamber through the tail nozzle to form an infrared shielding smoke screen.

11. An infrared shielding gas turbine smoke generator, characterized in that: The invention 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; Wherein, the controller is used to implement the smoke screen generation method according to any one of claims 1 to 9.

12. A computer-readable storage medium, characterized in that The computer-readable storage medium stores computer-executable instructions, which, when executed by a processor, are used to implement all or part of the steps of the smoke screen generation method according to claims 1-9.

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