Thermal cycle co-combustion cone-pot steam turbine engine system

Abstract

The invention discloses a heat cycle mixed combustion cone-pot steam turbine engine system which comprises a mixed combustion high-pressure steam generation furnace and a heat recovery cone-pot steam turbine, the mixed combustion high-pressure steam generation furnace comprises a furnace body and a high-pressure water pipe, the high-pressure water pipe communicates with the middle of an inner cavity of the furnace body through a high-pressure water atomization nozzle, and a rotary mixing combustion module is arranged in the inner cavity of the lower portion of the furnace body; the upper part of the furnace body is connected with a high-pressure steam pipeline; the heat recovery cone-pot steam turbine comprises an annular spray pipe and a cone-pot steam turbine which are in relative running fit, the cone-pot steam turbine comprises a cone-pot shell, steam turbine blades and a transmission shaft which are connected, the transmission shaft is provided with a power output end, and a fluid outlet is formed in the bottom of the cone-pot shell; a low-temperature high-pressure steam inlet and a nozzle are arranged on the annular spray pipe, and an outlet of the nozzle faces the steam turbine blade; a cold cap is arranged above the steam turbine blades, and a cold core is arranged in an inner cavity of the lower portion of the conical kettle steam turbine. The high-pressure steam pipeline is communicated with the low-temperature high-pressure steam inlet. The thermal cycle mixed combustion cone pot steam turbine engine system is low in energy consumption and high in energy conversion efficiency.

Description

Technical Field

[0001] This invention relates to the field of steam engines, and more particularly to a thermally circulating co-fired cone turbine engine system. Background Technology

[0002] Existing fuel energy conversion rates fall into two categories:

[0003] 1) Single-use energy: This type of energy is only converted into mechanical or electrical energy, including internal combustion engines and thermal power plants. The energy conversion rate is usually less than 40%. The main reasons include: low engine efficiency, inability to recover waste heat, and the need to allocate energy to the cooling system.

[0004] 2) Dual Energy Utilization: After converting energy into mechanical or electrical energy, waste heat is recovered and utilized. A representative example is the thermoelectric linkage system, with an energy conversion rate of around 70%. The main reason for the significant increase in energy conversion rate is the efficient recovery of waste heat, eliminating the need to allocate additional energy to the cooling system; however, the low engine efficiency remains unchanged.

[0005] It is evident that to develop an engine system with extremely high energy conversion efficiency, a highly efficient engine and a thermal energy recycling system are necessary. Summary of the Invention

[0006] The purpose of this invention is to provide a thermal cycle combustion cone turbine engine system that can solve the above-mentioned technical problems.

[0007] To achieve the above objectives, the present invention provides a thermally circulating co-fired cone turbine engine system, comprising a co-fired high-pressure steam generator and a heat recovery cone turbine. The co-fired high-pressure steam generator includes a furnace body and a high-pressure water pipe. The high-pressure water pipe is connected to the middle of the furnace body cavity through a high-pressure water atomizing nozzle. A swirl-mixing combustion module is provided in the lower cavity of the furnace body, and a high-pressure steam pipe is connected to the upper part of the furnace body. The heat recovery cone turbine includes a ring nozzle and a cone turbine that rotate relative to each other. The cone turbine includes a cone shell, turbine blades, and a drive shaft connected together. The drive shaft has a power output end, and a fluid outlet is provided at the bottom of the cone shell. The ring nozzle has a low-temperature high-pressure steam inlet and a nozzle, with the nozzle outlet facing the turbine blades. A cold cap is provided above the turbine blades, and a cold core is provided in the lower cavity of the cone turbine. The high-pressure steam pipe is connected to the low-temperature high-pressure steam inlet.

[0008] Furthermore, it also includes a heat source cooling and residual heat regeneration power system, which is equipped with a high-pressure gas pipe and a gas return pipe; the cold cap is equipped with a first gas inlet and a first gas outlet, and the cold core is equipped with a second gas inlet and a second gas outlet; the output end of the high-pressure gas pipe is connected to the first gas inlet and the second gas inlet respectively, the first gas outlet is connected to the input end of the gas return pipe, and the second gas outlet is connected to the high-pressure gas pipeline of the swirl combustion module.

[0009] Furthermore, the cold cap includes a cold cap shell, with a hole in the middle through which the drive shaft passes; an airflow channel is formed in the inner cavity of the cold cap shell by a number of airflow guide plates connected thereto; the cold cap shell is provided with a first air inlet and a first air outlet respectively connected to the two ends of the airflow channel; the airflow channel is located above the turbine blades, and the side wall of the cold cap shell is provided with a notch for avoiding the nozzle.

[0010] Furthermore, the cold core includes a coil support, with a support base connected to the bottom of the coil support. A heat exchange coil is installed on the coil support, with the second gas inlet and the second gas outlet at both ends of the heat exchange coil, respectively.

[0011] Furthermore, the conical kettle shell includes an upper inverted cone and a lower inverted cone, which are connected by a waist channel; the inner wall of the waist channel is connected to the drive shaft by a guide fan blade, and the inner wall of the upper inverted cone shell is connected to the drive shaft by a swirl-reducing rib; the fluid outlet is located at the bottom of the lower inverted cone, and a swirl-reducing wing plate is provided on the lower inner wall of the lower inverted cone; the turbine blade is located at the top of the upper inverted cone.

[0012] Furthermore, the top of the upper inverted cone is provided with an upper cover plate and a lower sealing plate, and the edges of the upper cover plate and the lower sealing plate are connected by an arc sealing plate. The turbine blades are connected to the outside of the arc sealing plate, and both the lower sealing plate and the upper cover plate are connected to the drive shaft. There are at least two turbine blades, and the tops of each turbine blade are connected by the same arc rib.

[0013] Furthermore, the annular nozzle also includes an annular pipe, and the low-temperature high-pressure steam inlet, the annular pipe and the nozzle are connected in sequence. The outlet direction of the nozzle is at an angle to the rotation radius of the turbine blades. An insulation shell is provided on the outside of the annular pipe.

[0014] Furthermore, the outer wall of the cone-shaped kettle shell is provided with a cone-shaped kettle insulation shell, and the furnace body is wrapped with an insulation shell.

[0015] Furthermore, the swirl-mixing combustion module includes an annular module body, a fuel pipeline, and a high-pressure gas pipeline; the front sections of both the fuel pipeline and the high-pressure gas pipeline are located outside the annular module body, and their rear sections are both annular and arranged inside the annular module body; a fuel injector and a high-pressure gas injector are provided on the inner wall of the annular module body, with the fuel injector connected to the rear section of the fuel pipeline and the high-pressure gas injector connected to the rear section of the high-pressure gas pipeline; an ignition device is also provided on the annular module body; the fuel injector is located above the high-pressure gas injector, and the fuel injector and the high-pressure gas injector... The number of nozzles is multiple and they are arranged around the inner wall of the annular module. The output end of the fuel nozzle is oriented at an angle to the radial direction of the annular module, and the output end of the high-pressure gas nozzle is oriented at an angle to the radial direction of the annular module. The rotation direction of the fuel ejected from the fuel nozzle is opposite to the rotation direction of the gas ejected from the high-pressure gas nozzle. The inner wall of the annular module includes an upper inner wall and a lower inner wall. The diameter of the upper inner wall is larger than that of the lower inner wall. The fuel nozzle is located on the upper inner wall of the annular module, and the high-pressure gas nozzle is located on the lower inner wall of the annular module.

[0016] Furthermore, the furnace body is equipped with a temperature sensor, and the high-pressure water pipe is equipped with a temperature-controlled water flow regulating valve, which is linked to the temperature sensor; a drain valve is connected to the bottom of the furnace body; the fluid outlet of the cone-shaped kettle shell is connected to a water collection tank, the water collection tank is equipped with a water pump, and the water pump is connected to the high-pressure water pipe through a diaphragm pressure stabilizing tank.

[0017] Beneficial effects

[0018] Compared with the prior art, the advantages of the thermal circulation co-firing cone turbine engine system of the present invention are:

[0019] 1. In the furnace, atomized water mist is heated to generate low-temperature, high-pressure steam. The temperature of the low-temperature, high-pressure steam is generally below 200℃, for example, around 180℃. Its function is to convert high-temperature energy into pressure energy while increasing the mass of the energy transfer medium. Its benefits include: reducing the difficulty of heat preservation, making it easier to control heat escape energy within 0.5% of the fuel combustion energy; reducing the difficulty of subsequent heat recovery, making it easier to achieve a heat energy recovery rate of over 90%; significantly increasing the proportion of potential energy in the total energy while significantly decreasing the proportion of temperature energy, ultimately leading to a significant increase in the proportion of subsequent total energy converted into mechanical energy; and ensuring that the heat escape energy is controlled within 0.5% of the fuel combustion energy by heat preservation of the furnace body and steam pipes. The low-temperature, high-pressure steam generated by the co-fired high-pressure steam generator can be used to drive the heat recovery cone turbine in the cone turbine engine, causing its drive shaft to rotate and output power. This converts the non-waste heat portion of the steam into mechanical energy. Part of the steam's waste heat is transferred to the gas in the cold cap and cold core and recovered into the heat cycle recovery system. The steam cools to form condensate, which is discharged from the fluid outlet at the bottom of the cone shell. The condensate formed after steam cooling is recovered and can be re-entered into the furnace through a high-pressure water pipe for atomization, achieving water recycling. The co-fired high-pressure steam generator is the foundation for achieving high energy conversion efficiency in the heat cycle co-fired cone turbine engine system. It ensures that the total energy entering the co-fired high-pressure steam generator is ultimately output as low-temperature, high-pressure steam, and the energy loss in this process should be less than 0.5%.

[0020] 2. After the low-temperature, high-pressure steam enters the conical kettle shell, it moves towards the center of the kettle along the turbine blades and falls into the kettle under the guidance of the guide fan blades. The cooled steam becomes condensate + steam and rotates downwards at high speed in the kettle while converging towards the central axis. Most of the remaining potential energy of the condensate and steam is absorbed by the kettle body, mainly by anti-spin ribs, and converted into mechanical energy, further improving energy recovery efficiency.

[0021] 3. The waste heat from the condensate and steam is absorbed by the cold core. The cold core sends the low-temperature high-pressure gas flow into the swirl combustion module of the co-fired high-pressure steam generator and mixes it with the fuel for combustion, recovering the waste heat and generating low-temperature high-pressure steam with lower energy consumption.

[0022] 4. The annular nozzle has multiple nozzles, allowing for more even force distribution on the turbine blades. The guide vanes prevent steam from overflowing from the top of the vessel, controlling the airflow direction. The swirl deflectors collect the remaining potential energy of the condensate.

[0023] 5. In the swirl-mixing combustion module, the fuel and high-pressure gas rotate in opposite directions and collide to mix, resulting in better mixing and allowing the mixture to burn completely after being ignited.

[0024] The invention will become clearer from the following description, taken in conjunction with the accompanying drawings, which are used to explain embodiments of the invention. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 Schematic diagram of a thermally circulating conical turbine engine system;

[0027] Figure 2 This is a front view of a mixed-fired high-pressure steam generator;

[0028] Figure 3 This is a right-side sectional view of a co-fired high-pressure steam generator.

[0029] Figure 4 This is a top sectional view of a co-fired high-pressure steam generator.

[0030] Figure 5 This is a front view of the swirl-mix combustion module;

[0031] Figure 6 This is a top view of the swirl-mix combustion module;

[0032] Figure 7 This is a front sectional view of the swirl-mixing combustion module;

[0033] Figure 8 This is a front view of a heat recovery cone turbine.

[0034] Figure 9 This is a top view of a heat recovery cone turbine.

[0035] Figure 10 for Figure 9 1-1 view;

[0036] Figure 11 for Figure 10 2-2 view;

[0037] Figure 12 This is a front view of a cone turbine.

[0038] Figure 13 This is a top view of a cone turbine.

[0039] Figure 14 This is a front sectional view of a cone turbine.

[0040] Figure 15 for Figure 14 3-3 view;

[0041] Figure 16 for Figure 14 4-4 view;

[0042] Figure 17 for Figure 14 5-5 view;

[0043] Figure 18 This is a top view of the beanie;

[0044] Figure 19 This is the front view of the beanie;

[0045] Figure 20 This is a horizontal cross-sectional view of the airflow channel of the cold cap;

[0046] Figure 21 This is a vertical sectional view of the cold hat;

[0047] Figure 22 This is a top view of the cold core;

[0048] Figure 23 This is a top view of the annular nozzle. Detailed Implementation

[0049] Embodiments of the present invention will now be described with reference to the accompanying drawings.

[0050] Example

[0051] Specific embodiments of the present invention are as follows: Figures 1 to 23 As shown, a thermal recirculation co-fired cone turbine engine system includes a co-fired high-pressure steam generator 1 and a heat recovery cone turbine 2. The co-fired high-pressure steam generator 1 includes a furnace body 11 and a high-pressure water pipe 12. The high-pressure water pipe 12 is connected to the middle of the inner cavity of the furnace body 11 through a high-pressure water atomizing nozzle 14. A swirl-mixing combustion module 15 is provided in the lower inner cavity of the furnace body 11. A high-pressure steam pipe 16 is connected to the upper part of the furnace body 11, and a drain valve 17 is connected to the bottom of the furnace body 11. The furnace body 11 is covered with an insulation shell 18.

[0052] A temperature sensor 131 is installed inside the furnace body 11, and a temperature-controlled water flow regulating valve 13 is installed on the high-pressure water pipe 12. The temperature-controlled water flow regulating valve 13 is linked to the temperature sensor 131. When the temperature sensor 131 detects that the temperature inside the furnace reaches the opening temperature set by the temperature-controlled water flow regulating valve 13 (generally the vaporization temperature of water at 3 atmospheres, such as 135℃), the temperature-controlled water flow regulating valve 13 automatically opens, and the high-pressure water atomizing nozzle 14 sprays high-pressure water mist into the furnace body 11. The spray volume increases as the temperature rises. When the temperature drops below the opening temperature set by the temperature-controlled water flow regulating valve 13, the temperature-controlled water flow regulating valve 13 automatically closes.

[0053] The swirl-mixing combustion module 15 includes an annular module body 151, a fuel pipeline 152, and a high-pressure gas pipeline 153. An electrically controlled flow valve 1531 is connected to the high-pressure gas pipeline 153. The front sections of both the fuel pipeline 152 and the high-pressure gas pipeline 153 are located outside the annular module body 151, while their rear sections are annular and arranged inside the annular module body 151. A fuel injector 156 and a high-pressure gas injector 155 are provided on the inner wall of the annular module body 151. The fuel injector 156 communicates with the rear section of the fuel pipeline 152, and the high-pressure gas injector 155 communicates with the rear section of the high-pressure gas pipeline 153. An ignition device 154 is also provided inside the annular module body 151.

[0054] Fuel nozzles 156 are located above high-pressure gas nozzles 155. Multiple fuel nozzles 156 and high-pressure gas nozzles 155 are evenly distributed around the inner wall of the annular module 151. The output end of the fuel nozzle 156 forms an angle with the radial direction of the annular module 151, and the output end of the high-pressure gas nozzle 155 also forms an angle with the radial direction of the annular module 151. The rotation direction of the fuel ejected from the fuel nozzle 156 is opposite to the rotation direction of the gas ejected from the high-pressure gas nozzle 155. In this embodiment, in the top view, the fuel from the fuel nozzle 156 rotates counterclockwise, and the high-pressure gas from the high-pressure gas nozzle 155 rotates clockwise. The mixture is ignited by the ignition device 154.

[0055] The inner wall of the annular module 151 includes an upper inner wall and a lower inner wall, which are stepped. The diameter of the upper inner wall is larger than that of the lower inner wall. The fuel nozzle 156 is located on the upper inner wall of the annular module 151, and the high-pressure gas nozzle 155 is located on the lower inner wall of the annular module 151. The upper and lower inner walls serve to guide the fuel gas and high-pressure gas.

[0056] The co-fired high-pressure steam generator 1 is an internal combustion pressure furnace that co-fires fuel with high-pressure air in a high-pressure resistant furnace body 11 to generate high temperature, and then the high temperature vaporizes the high-pressure water mist injected into the furnace in a controlled manner, and finally gathers almost all the energy obtained from the reaction in the furnace into low-temperature high-pressure steam and outputs it from the high-pressure steam pipe 16.

[0057] The heat recovery cone turbine 2 includes an annular nozzle 21 and a cone turbine 23 that rotate relative to each other, with the cone turbine 23 arranged vertically. The cone turbine 23 includes a cone shell 231, turbine blades 233, and a drive shaft 232 connected together as a single unit, with the drive shaft 232 also arranged vertically. The drive shaft 232 has a power output end, serving as the power output end of the engine. A fluid outlet 2310 is located at the bottom of the cone shell 231. The annular nozzle 21 has a low-temperature, high-pressure steam inlet 211 and multiple nozzles 213, with the nozzles 213 exiting towards the turbine blades 233. A cold cap 22 is located above the turbine blades 233, and a cold core 24 is located in the lower inner cavity of the cone turbine 23. A cone insulation shell 230 is located on the outer wall of the cone shell 231.

[0058] The high-pressure steam pipe 16 is connected to the low-temperature high-pressure steam inlet 211. The fluid outlet 2310 of the conical kettle shell 231 is connected to the water collection tank 6, which is equipped with a water pump 251. The water pump 251 is connected to the high-pressure water pipe 12 through a diaphragm pressure stabilizing tank 101.

[0059] The cooling cap 22 includes a cooling cap outer shell 221, with a hole 222 in the middle of the cooling cap outer shell 221 through which the drive shaft 232 passes. An airflow channel 226 is formed in the inner cavity of the cooling cap outer shell 221 by several airflow guide plates 225 connected thereto. The cooling cap outer shell 221 has a first air inlet 223 and a first air outlet 224 respectively connected to both ends of the airflow channel 226. The airflow channel 226 is located above the turbine blades 233, and a notch 227 is provided on the side wall of the cooling cap outer shell 221 to avoid the nozzle 213.

[0060] The cold core 24 includes a coil support 242, with a support base 243 connected to the bottom of the coil support 242. A heat exchange coil 241 is mounted on the coil support 242, with a second gas inlet 244 and a second gas outlet 245 at its two ends. The coil support 242 and the heat exchange coil 241 are located within the lower inverted cone of the conical shell 231. The support base 243 of the cold core 24 extends downward from the fluid outlet 2310 to below the conical shell 231. The cold core 24 does not rotate with the conical turbine 23.

[0061] The conical kettle shell 231 includes an upper inverted cone and a lower inverted cone, with the lower end cross-sectional dimension of the upper inverted cone being smaller than the upper end cross-sectional dimension of the lower inverted cone. The lower end of the upper inverted cone and the upper end of the lower inverted cone are connected by a waist channel 2312. The inner wall of the waist channel 2312 is connected to the drive shaft 232 by at least two guide vanes 239, and the inner wall of the upper inverted cone of the conical kettle shell 231 is connected to the drive shaft 232 by six anti-spin ribs 238. The fluid outlet 2310 is located at the bottom of the lower inverted cone, and six anti-spin ribs 2311 are provided on the lower inner wall of the lower inverted cone. The turbine blades 233 are multiple and located at the top of the upper inverted cone.

[0062] The top of the inverted cone is provided with an upper cover plate 235 and a lower sealing plate 236, both of which are circular. The edges of the upper cover plate 235 and the lower sealing plate 236 are connected by an arc-shaped sealing plate 237. Each turbine blade 233 is connected to the outside of the arc-shaped sealing plate 237. The middle of both the lower sealing plate 236 and the upper cover plate 235 are connected to the drive shaft 232. There are at least two turbine blades 233, and the tops of each turbine blade 233 are connected by the same arc-shaped rib plate 234.

[0063] The annular nozzle 21 also includes an annular pipe 212. The low-temperature high-pressure steam inlet 211, the annular pipe 212, and the nozzle 213 are connected in sequence. The outlet direction of the nozzle 213 forms an angle with the rotation radius of the turbine blade 233. An insulating shell is provided on the outer side of the annular pipe 212. The outer edge of the turbine blade 233 is provided with an indented notch to avoid interference between the nozzle 213 and the nozzle 213.

[0064] The thermal recirculation combustion cone turbine engine system also includes a heat source cooling and residual heat regeneration power system 3, which is equipped with a high-pressure gas pipe 31 and a gas return pipe 32. The cold cap 22 is equipped with a first gas inlet 223 and a first gas outlet 224, and the cold core 24 is equipped with a second gas inlet 244 and a second gas outlet 245. The output end of the high-pressure gas pipe 31 is connected to the first gas inlet 223 and the second gas inlet 244, respectively. The first gas outlet 224 is connected to the input end of the gas return pipe 32, and the second gas outlet 245 is connected to the high-pressure gas pipe 153 of the swirl combustion module 15.

[0065] The heat source cooling and residual heat regeneration power system 3 adopts the technical solution with application number 202111358063.0, publication number CN114017135A, and titled "Heat Source Cooling and Residual Heat Regeneration Power System". The pipeline at the output end of the gas storage tank in the heat source cooling and residual heat regeneration power system 3 serves as a high-pressure gas pipe 31.

[0066] 1. The system operation process is as follows:

[0067] (1) The heat source cooling and other heat regeneration power system 3 is started, and the cold cap 22 and cold core 24 of the heat recovery cone turbine 2 are supplied with cooling through the high pressure gas pipe 31.

[0068] (2) Input fuel and high-pressure gas into the co-fired high-pressure steam generator 1 and start it up.

[0069] (3) When the furnace temperature of the co-fired high-pressure steam generator 1 reaches the high-pressure water spray setting value (generally around 135°C), the high-pressure water atomizing nozzle 14 will automatically open, and the spray will be larger as the temperature increases.

[0070] (4) The co-fired high-pressure steam generator 1 is a heat-insulated, sealed co-fired chamber where all energy is gathered into low-temperature, high-pressure steam, which drives the heat recovery cone turbine 2 through pipelines.

[0071] (5) The heat recovery cone turbine 2 converts almost all of the non-waste heat energy of the low-temperature high-pressure steam into mechanical energy as power output. The waste heat energy is recovered to the "heat source cooling and waste heat regeneration power system" through heat exchange. Part of it is sent back to the co-fired high-pressure steam generator 1 as high-pressure gas through the high-pressure gas pipeline 153, and the other part is sent back to the heat source cooling and waste heat regeneration power system 3 as active energy through the gas return pipe 32.

[0072] (6) After passing through the heat recovery cone turbine 2, the high-pressure steam becomes extremely low-energy residual gas and condensate and is discharged. The condensate is collected in the water collection tank 25.

[0073] (7) Water pump 251 pumps water from water collection tank 25 into diaphragm pressure stabilizing tank 101. When the temperature-controlled high-pressure water spray valve is opened, water is automatically sprayed into the co-fired high-pressure steam generator 1 under the pressure of diaphragm pressure stabilizing tank 101. The mist water is vaporized into high-pressure steam and becomes condensate after passing through heat recovery cone turbine 2. It is then collected back into water collection tank 25, thus realizing the recycling of water. At the same time, it has a good effect on purifying exhaust gas when using liquid fuels such as gasoline and diesel.

[0074] 2. Evaluate the energy conversion rate of fuel based on the principle of energy conservation:

[0075] Q 出 =Q 燃 +Q 水 +N 电 +N 入气 -Q 排 -Q 电 -Q w -N 排气 -N w

[0076] Q 出 —Net output of mechanical power;

[0077] Q 燃 —The energy from the combustion of fuel in the furnace;

[0078] Q 水 —Input high-pressure water energy into the furnace;

[0079] N 电 —The electrical energy input to the heat circulation system;

[0080] N 入气 —The energy of the air drawn into the heat circulation system;

[0081] Q排 —Energy released from condensate;

[0082] Q 电 —Water pumps consume electricity;

[0083] Q w —The energy losses within the "thermal circulation co-firing cone turbine engine," such as water vapor splashing, temperature reduction, wind resistance, pipe resistance, and bearing friction, are controlled within Q. 燃 Within 5%;

[0084] N 排气 —The energy used to expel air from the system;

[0085] N w —The overall energy loss of the heat circulation system can be controlled within 10% of the system's total energy, which is equivalent to Q 燃 Within 3%.

[0086] in:

[0087] Q 水 -Q 排 -Q 电 ≈0

[0088] N 入气 -N 排气 ≈0

[0089] N 电 -N w ≈0

[0090] The formula simplifies to:

[0091] Q 出 =Q 燃 -Q w

[0092] Then Q 出 / Q 燃 >95%

[0093] This can be understood as the energy conversion rate of the fuel being above 95%.

[0094] If N 电 Also as Q 燃 Loss:

[0095] Q 出 =Q 燃 -Q w -N 电

[0096] Then Q 出 / Q 燃 >92%

[0097] This can be understood as the actual energy utilization rate of the fuel being over 92%.

[0098] The above calculations show that it is feasible for the "thermal circulation combustion cone turbine engine system" to achieve an energy conversion efficiency of over 90%.

[0099] The present invention has been described above in conjunction with the preferred embodiments, but the present invention is not limited to the embodiments disclosed above, but should cover various modifications and equivalent combinations made in accordance with the essence of the present invention.

Claims

1. A thermally circulating co-fired cone turbine engine system, characterized in that, The system includes a co-fired high-pressure steam generator (1) and a heat recovery cone turbine (2). The co-fired high-pressure steam generator (1) includes a furnace body (11) and a high-pressure water pipe (12). The high-pressure water pipe (12) is connected to the middle of the inner cavity of the furnace body (11) through a high-pressure water atomizing nozzle (14). A swirl-mixing combustion module (15) is provided in the lower inner cavity of the furnace body (11). A high-pressure steam pipe (16) is connected to the upper part of the furnace body (11). The heat recovery cone turbine (2) includes a ring nozzle (21) and a cone turbine (23) that rotate relative to each other. The cone turbine (23) includes a cone turbine connected to the ring nozzle. The conical kettle shell (231), turbine blades (233), and drive shaft (232) are provided. The drive shaft (232) is provided with a power output end. The bottom of the conical kettle shell (231) is provided with a fluid outlet (2310). The ring nozzle (21) is provided with a low-temperature high-pressure steam inlet (211) and a nozzle (213). The outlet of the nozzle (213) faces the turbine blades (233). A cold cap (22) is provided above the turbine blades (233). A cold core (24) is provided in the lower inner cavity of the conical kettle turbine (23). The high-pressure steam pipe (16) is connected to the low-temperature high-pressure steam inlet (211).

2. The thermal circulation co-firing cone turbine engine system according to claim 1, characterized in that, It also includes a heat source cooling and residual heat regeneration power system (3), which is equipped with a high-pressure gas pipe (31) and a gas return pipe (32); the cold cap (22) is equipped with a first air inlet (223) and a first air outlet (224), and the cold core (24) is equipped with a second gas inlet (244) and a second gas outlet (245); the output end of the high-pressure gas pipe (31) is connected to the first air inlet (223) and the second gas inlet (244) respectively, the first air outlet (224) is connected to the input end of the gas return pipe (32), and the second gas outlet (245) is connected to the high-pressure gas pipeline (153) of the swirling combustion module (15).

3. The thermal circulation co-firing cone turbine engine system according to claim 2, characterized in that, The cold cap (22) includes a cold cap shell (221), with a hole (222) in the middle of the cold cap shell (221), through which the drive shaft (232) passes; the inner cavity of the cold cap shell (221) is formed by several airflow guide plates (225) connected thereto to form an airflow channel (226), and the cold cap shell (221) is provided with a first air inlet (223) and a first air outlet (224) respectively connected to both ends of the airflow channel (226); the airflow channel (226) is located above the turbine blade (233), and the side wall of the cold cap shell (221) is provided with a notch (227) for avoiding the nozzle (213).

4. The thermal circulation co-firing cone turbine engine system according to claim 2, characterized in that, The cold core (24) includes a coil support (242), a support base (243) is connected to the bottom of the coil support (242), a heat exchange coil (241) is installed on the coil support (242), and the two ends of the heat exchange coil (241) are the second gas inlet (244) and the second gas outlet (245), respectively.

5. The thermal circulation co-firing cone turbine engine system according to claim 1, characterized in that, The conical kettle shell (231) includes an upper inverted cone and a lower inverted cone, which are connected by a waist channel (2312). The inner wall of the waist channel (2312) is connected to the drive shaft (232) by a guide fan blade (239). The inner wall of the upper inverted cone of the conical kettle shell (231) is connected to the drive shaft (232) by a swirl-reducing rib (238). The fluid outlet (2310) is located at the bottom of the lower inverted cone, and a swirl-reducing wing plate (2311) is provided on the lower inner wall of the lower inverted cone. The turbine blade (233) is located at the top of the upper inverted cone.

6. The thermal circulation co-firing cone turbine engine system according to claim 5, characterized in that, The top of the upper inverted cone is provided with an upper cover plate (235) and a lower sealing plate (236). The edges of the upper cover plate (235) and the lower sealing plate (236) are connected by an arc sealing plate (237). The turbine blade (233) is connected to the outside of the arc sealing plate (237). Both the lower sealing plate (236) and the upper cover plate (235) are connected to the drive shaft (232). There are at least two turbine blades (233), and the top of each turbine blade (233) is connected by the same arc rib plate (234).

7. The thermal circulation co-firing cone turbine engine system according to claim 1, characterized in that, The annular nozzle (21) also includes an annular pipe (212). The low-temperature high-pressure steam inlet (211), the annular pipe (212) and the nozzle (213) are connected in sequence. The outlet direction of the nozzle (213) is at an angle to the rotation radius of the turbine blade (233). The annular pipe (212) is provided with a heat-insulating shell on the outside.

8. The thermal circulation co-firing cone turbine engine system according to claim 1, characterized in that, The outer wall of the conical kettle shell (231) is provided with a conical kettle heat insulation shell (230), and the furnace body (11) is wrapped with a heat insulation shell (18).

9. A thermally circulating co-fired cone turbine engine system according to claim 1, characterized in that, The swirl-mixing combustion module (15) includes an annular module body (151), a fuel pipeline (152), and a high-pressure gas pipeline (153). The front sections of both the fuel pipeline (152) and the high-pressure gas pipeline (153) are located outside the annular module body (151), and their rear sections are both annular and arranged inside the annular module body (151). A fuel injector (156) and a high-pressure gas injector (155) are provided on the inner wall of the annular module body (151). The fuel injector (156) is connected to the rear section of the fuel pipeline (152), and the high-pressure gas injector (155) is connected to the rear section of the high-pressure gas pipeline (153). An ignition device (154) is also provided on the annular module body (151). The fuel injector (156) is located above the high-pressure gas injector (155), and the fuel injector... There are multiple fuel nozzles (156) and high-pressure gas nozzles (155) arranged around the inner wall of the annular module (151); the output end of the fuel nozzle (156) is oriented at an angle to the radial direction of the annular module (151), and the output end of the high-pressure gas nozzle (155) is oriented at an angle to the radial direction of the annular module (151); the rotation direction of the fuel ejected by the fuel nozzle (156) is opposite to the rotation direction of the gas ejected by the high-pressure gas nozzle (155); the inner wall of the annular module (151) includes an upper inner wall and a lower inner wall, the diameter of the upper inner wall is larger than that of the lower inner wall, the fuel nozzle (156) is located on the upper inner wall of the annular module (151), and the high-pressure gas nozzle (155) is located on the lower inner wall of the annular module (151).

10. A thermally circulating co-fired cone turbine engine system according to claim 1, characterized in that, The furnace body (11) is equipped with a temperature sensor (131), and the high-pressure water pipe (12) is equipped with a temperature-controlled water flow regulating valve (13), which is linked with the temperature sensor (131). The bottom of the furnace body (11) is connected to a drain valve (17). The fluid outlet (2310) of the conical kettle shell (231) is connected to a water collection tank (6), and the water collection tank (6) is equipped with a water pump (251). The water pump (251) is connected to the high-pressure water pipe (12) through a diaphragm pressure stabilizing tank (101).

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