WO2021032210A1 - Turbofan transducer, power generation system thereof, and power generation method - Google Patents

Abstract

A turbofan transducer (100), a power generation system (200) thereof, and a power generation method. The turbofan transducer (100) comprises a housing (10), a main shaft (20), and a turbofan blade (30). The turbofan blade (30) is installed on the main shaft (20) and arranged within the housing (10). The housing (10) has a chamber (11) formed within an interior thereof, and is provided with an air inlet (12) and an air outlet (13). The air inlet (12) is in fluid communication with an exhaust opening of an engine. An exhaust gas discharged by the engine passes through the air inlet (12), enters the chamber (11), and drives the turbofan blade (30) to move, so as to drive the main shaft (20) to rotate. The turbofan transducer (100) recycles exhaust energy.

Description

Turbofan transducer and its power generation system and power generation method Technical field

The present invention relates to the field of power generation, in particular to a turbofan transducer and its power generation system and power generation method.

Background technique

Single-power vehicles generally use ignition gasoline engines or compression-ignition diesel engines. Generally, the thermal efficiency of gasoline and diesel engines is only 40-45%, and a large amount of the heat formed by the work of fuel is dissipated with the cooling gas, and roughly 20-30% of the heat energy lost to the exhaust heat and pressure is accounted for. This will cause energy waste, and result in decreased engine efficiency, engine emission pollution and increased carbon consumption, and poor fuel economy. If this part of energy can be efficiently recovered, the thermal efficiency of the engine can be increased by 10%-20%, which will greatly improve the fuel economy of the engine, and also reduce carbon emissions and pollution emissions. In addition, the rotary turbofan engine aero engine also relates to an engine.

In 2016, MAHLE in Germany invented the use of alcohol or propane as a heat exchange medium to exchange the heat from the tail of a truck engine. The change in the volume of the heat and cold of the medium was converted into shaft output power through a turbine to realize driving and power generation. This system is also known as the Mahler Truck Alcohol Turbine Transduction Power Generation System. Large trucks are equipped with this system, which can generate 15KW of electricity uphill, but weak electricity generation on downhill or flat roads. The system consists of heat exchangers, media, pipelines, circulating pumps, radiators, turbines, generators, and fans; the basic composition is the same as the Mahler cycle system of the power plant. The actual structure of this kind of system is complex, the volume is large, and the energy conversion efficiency is not high. It is estimated to be about 20%, and it is difficult to realize on the vehicle. The Rankine cycle system also relates to a power generation system. As shown in Figure 1, the power generation system includes a waste heat source ZC41, an evaporator ZC42, an expander ZC43, a generator ZC44, a condenser ZC45, and a working fluid pump ZC46; The steam turbine power generation system is also a power generation system. The above-mentioned power generation system also has the problems of complex structure, large volume, and low energy conversion efficiency.

Summary of the invention

The purpose of the present invention is to provide a turbofan transducer and its power generation system and power generation method to solve the above-mentioned problems in the prior art.

In order to solve the above problems, according to one aspect of the present invention, a turbofan transducer is provided. The turbofan transducer includes a housing, a main shaft, and a turbofan blade, the turbofan blade being mounted on the main shaft And arranged in the housing, the inside of the housing forms a cavity and is provided with an air inlet and an air outlet, the air inlet is in fluid communication with the engine exhaust, and exhaust gas discharged from the engine passes through the air inlet Enter the chamber and drive the turbofan blades to move to drive the main shaft to rotate.

In one embodiment, the casing is provided with a guide portion, and the exhaust gas entering from the air inlet is guided along the guide portion and then flows to the turbofan blades.

In one embodiment, a tapered structure is provided inside the housing, the tapered structure is fixedly connected to the inner wall of the housing, and the flow guide is formed on the surface of the tapered structure.

In one embodiment, the tapered structure includes a tapered piece and an annular piece, the front of the tapered piece forms a tapered body, the back of the tapered piece forms an annular body, and the outer surface of the tapered body The guide portion is formed, the ring body is fixedly connected with the inner wall of the ring member, and an air flow channel is formed between the inner wall of the ring member and the outer wall of the ring body.

In one embodiment, the front end of the main shaft is rotatably installed in the tapered structure.

In one embodiment, the back surface of the tapered member is provided with a groove, the bottom of the groove is provided with a bearing installation hole, and one end of the main shaft is rotatably installed in the bearing installation hole through a bearing.

In one embodiment, the front part of the chamber forms a conical chamber, the conical member is installed in the conical chamber, and the outer wall of the conical member and the inner wall of the conical chamber Form an air flow channel between.

In one embodiment, the air inlet is provided at the front end of the housing and extends along the main axis direction, and the air outlet is provided on the side wall of the housing, and the turbofan blades are arranged at the Between the air inlet and the air outlet.

In an embodiment, the turbofan transducer includes at least two air outlets, the housing includes a first part and a second part that are cut along a plane passing through the main shaft, and the at least two air outlets are arranged at the The first part or the second part.

In one embodiment, the at least two air outlets extend along the same axis.

In an embodiment, the at least two air outlets are arranged extending in a direction perpendicular to the main axis.

In an embodiment, the turbofan transducer includes an air inlet and an air outlet, and the air inlet and the air outlet are respectively arranged at the front and the rear of the housing and are vertical Arranged on the main shaft.

In one embodiment, the housing includes a first part, a second part, and a third part that are independent of each other. The first part and the second part cooperate to form a first cavity inside, and the third part A second chamber is formed in the inside, wherein the turbofan blades are arranged in the first chamber, the second chamber has a shape matching the outer surface of the cone, and the cone is arranged in An air flow channel is formed in the second chamber and between the outer surface of the cone and the inner wall of the second chamber.

In one embodiment, a plurality of turbine fan stator blade installation steps are formed on the inner wall of the first chamber, and the distance between the plurality of turbine fan stator blade installation steps and the main shaft is along the flow direction of the exhaust gas in the housing. Increasing sequentially, the turbine fan vanes of the turbofan blades are fixedly installed on the turbine fan vane installation steps.

In one embodiment, an opening communicating with the second chamber is provided on the side wall of the third part of the housing, and a control valve is provided in the opening to control the pressure of the gas entering from the air inlet .

In an embodiment, the turbofan transducer includes at least two sets of turbofan blades, each set of turbofan blades includes a turbofan blade and a turbofan stationary blade, and the turbofan blade is fixedly installed on the main shaft And the turbofan vane is fixedly installed on the casing.

In an embodiment, the at least two sets of turbofan blades are arranged in sequence along the airflow direction, and the outer diameters of the two sets of turbofan blades increase in sequence along the airflow direction and are located between 40mm and 300mm.

In an embodiment, the turbofan transducer includes n sets of turbofan blades, the n sets of turbofan blades are arranged in sequence around the main shaft, and the outer diameters of the n sets of turbofan blades increase in sequence along the airflow direction, And the angle formed by the tangent between the outer circumference of the n+1th group of turbofan blades and the outer circumference of the nth group of turbofan blades and the main axis is between 4-12 degrees; preferably, between 5-10 degrees.

In one embodiment, the turbofan transducer includes three sets of turbofan blades.

In an embodiment, the outer diameter of each group of turbofan blades of the n groups of turbofan blades is between 40 mm and 300 mm.

In an embodiment, the air passing area S1 of the first group of turbofan blades and the air passing area S0 of the air inlet satisfy the following relationship: S0*45%<S1<S0*98%;

Preferably, the air passing area S1 of the first group of turbofan blades and the air passing area S0 of the air inlet satisfy the following relationship: S0*70%≦S1≦S0*95%.

According to another aspect of the present invention, a turbofan energy conversion power generation system is also provided. The turbofan energy conversion power generation system includes the above-mentioned turbofan transducer and a generator. The main shaft is connected with the rotor of the generator and drives the rotor of the generator to rotate.

In one embodiment, the turbofan energy conversion power generation system further includes a thermal energy conversion agent chamber and a thermal energy conversion agent heating chamber, wherein the shell of the turbofan transducer is provided with an injection port leading to the chamber, so The thermal energy conversion agent tank is in fluid communication with the thermal energy conversion agent heating chamber, and the thermal energy conversion agent heating chamber is in fluid communication with the injection port.

In one embodiment, the turbofan energy conversion power generation system further includes a thermal energy conversion agent chamber, a thermal energy conversion agent preheating chamber, and a thermal energy conversion agent heating chamber, wherein the housing of the turbofan transducer is provided with The injection port of the chamber, the thermal energy conversion agent preheating chamber is in fluid communication with the air outlet of the turbofan transducer, the thermal energy conversion agent tank is in fluid communication with the thermal energy conversion agent preheating chamber, and the thermal energy is converted The agent preheating chamber is in fluid communication with the thermal energy conversion agent heating chamber, and the thermal energy conversion agent heating chamber is in fluid communication with the injection port.

According to another aspect of the present invention, a power generation method is also provided. The method includes the following steps:

Step 1: Pass the exhaust gas of the engine into the above-mentioned turbofan transducer;

Step 2: Use the main shaft of the turbofan transducer to drive the generator to generate electricity.

In one embodiment, the method further includes the step of heating the thermal energy conversion agent with the exhaust gas of the engine before passing the exhaust gas of the engine into the turbofan transducer.

In one embodiment, the method further includes the following steps:

Step 3: Preheating the thermal energy conversion agent by using the gas flowing out from the air outlet of the turbofan transducer;

Step 4. Before passing the exhaust gas of the engine into the turbofan transducer, the exhaust gas of the engine is heated to the preheated heat energy conversion agent; and

Step 5: Pass the thermal energy conversion agent steam heated in Step 4 into the cavity of the turbofan transducer.

In one embodiment, the method may further include the following steps: monitoring the back pressure of the engine exhaust and controlling it within the range of 0-60 kpa.

According to another aspect of the present invention, a turbofan energy conversion power generation system is also provided, including:

The turbofan transducer includes a main shaft and a turbofan blade installed on the main shaft, and the turbofan transducer is in communication with the exhaust port of the engine;

The injection pump can inject fuel and heat exchange medium into the turbofan transducer;

The generator motor includes a rotor and a stator mounted on the main shaft.

In an embodiment, the turbofan transducer further includes a casing, an expansion chamber is formed between the casing and the turbofan blades, the expansion chamber is in communication with the exhaust port of the engine, and the injection pump is connected to the The expansion chamber is connected.

In an embodiment, the injection pump is connected to the expansion chamber through a heat exchange tube, and the heat exchange tube is located in the expansion chamber.

In one embodiment, the heat exchange tube has a cylindrical spiral shape.

In an embodiment, the turbofan blades include turbofan moving blades and turbofan stationary blades.

In one embodiment, the heat exchange medium is water, methanol, ethanol, or oil.

In one embodiment, it further includes a battery pack connected to the generator motor.

According to another aspect of the present invention, a power generation method is also provided, which includes the following steps:

The exhaust air discharged by the engine passes through the turbofan blades of the turbofan transducer and drives the turbofan blades and the main shaft to rotate. The main shaft drives the rotor of the generator motor to rotate together, and the generator motor generates electricity;

When the exhaust gas temperature is greater than the set temperature, the injection pump is used to inject liquid heat exchange medium into the turbofan transducer. The liquid heat exchange medium absorbs the heat of the exhaust gas to form a gaseous heat exchange medium. The heat exchange medium pushes the turbofan blades and the main shaft When rotating, the main shaft drives the rotor of the generator motor to rotate together, and the generator motor generates electricity;

When the engine stops working or is idling, the injection pump is used to inject fuel into the turbofan transducer. The fuel burns to form thermal expansion and drives the turbofan blades and the main shaft to rotate. The main shaft drives the rotor of the generator motor to rotate together, and the generator motor generates electricity.

In one embodiment, when the exhaust gas temperature is greater than 250 degrees Celsius, an injection pump is used to inject water into the turbofan transducer.

In one embodiment, the fuel injected into the turbofan transducer is ignited by a plasma electric field.

The invention can make full use of the heat energy and tail pressure of the tail gas to generate electricity, reduce the environmental pollution caused by the heat discharged by the engine, and realize the recovery of the heat energy of the tail gas. The turbofan energy conversion power generation system has a simple overall structure and a small space occupation. In addition, the turbofan transducer and power generation system of the present invention have a simple structure and a small footprint, which facilitates the implementation of the power generation method. In addition, the present invention can also continuously generate electricity.

Description of the drawings

Fig. 1 is a schematic structural diagram of a Rankine cycle system in the prior art.

Fig. 2 is a schematic structural diagram of a turbofan energy conversion power generation system according to an embodiment of the present invention.

FIG. 3 is an exploded perspective view of the turbofan transducer 100 according to an embodiment of the present invention.

Fig. 4 is a partial enlarged view of the turbofan transducer of Fig. 3, showing the conical structure and the turbofan blades.

5A-5B are a cross-sectional view and a left side view of the housing, respectively.

Fig. 6 is a perspective view of the second part of the housing.

Figure 7 is a front view of one set of turbofan blades.

Figure 8 is a front view of a set of turbofan vanes.

Fig. 9 is a cross-sectional view of a turbofan transducer according to an embodiment of the present invention.

Fig. 10 is a schematic block diagram of a turbofan energy conversion power generation system according to another embodiment of the present invention.

Fig. 11 is a schematic block diagram of a method for generating power using engine exhaust gas according to the present invention.

detailed description

Hereinafter, the preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings in order to understand the purpose, features and advantages of the present invention more clearly. It should be understood that the embodiments shown in the drawings do not limit the scope of the present invention, but merely illustrate the essential spirit of the technical solution of the present invention.

In the following description, for the purpose of illustrating various disclosed embodiments, certain specific details are set forth to provide a thorough understanding of various disclosed embodiments. However, those skilled in the relevant art will recognize that the embodiments may be practiced without one or more of these specific details. In other situations, well-known devices, structures, and technologies associated with this application may not be shown or described in detail to avoid unnecessarily obscuring the description of the embodiments.

Throughout the specification, reference to "one embodiment" or "an embodiment" means that a specific feature, structure, or characteristic described in combination with the embodiment is included in at least one embodiment. Therefore, the appearances of "in one embodiment" or "in an embodiment" in various places throughout the specification need not all refer to the same embodiment. In addition, specific features, structures, or characteristics can be combined in any manner in one or more embodiments.

In the following description, in order to clearly show the structure and working mode of the present invention, many directional words will be used for description, but the words "front", "rear", "left", "right", "outer", "inner" should be used. "," "outward", "inward", "上", "下" and other words are understood as convenient terms and should not be understood as restrictive terms.

As shown in Figure 2, the present invention provides a turbofan energy conversion power generation system, including:

The turbofan transducer ZC1 includes a main shaft ZC11 and a turbofan blade ZC12 mounted on the main shaft ZC11, and the turbofan transducer ZC1 communicates with the exhaust port of the engine ZC2;

The injection pump can inject fuel and heat exchange medium into the turbofan transducer ZC1;

The generator motor ZC3 includes a rotor ZC31 and a stator ZC32 mounted on the main shaft ZC11.

The working principle of the turbofan energy conversion power generation system in the present invention is: the exhaust air discharged from the engine ZC2 passes through the turbofan blade ZC12 of the turbofan transducer ZC1, and drives the turbofan blade ZC12 and the main shaft ZC11 to rotate, and the main shaft ZC11 drives the generator motor ZC3 The rotor ZC31 rotates together, and the generator motor ZC3 generates electricity, so as to realize the direct power generation using the exhaust gas tail pressure; when the exhaust gas temperature is greater than the set temperature, the injection pump is used to inject the liquid heat exchange medium into the turbofan transducer ZC1, and the liquid heat exchange The medium absorbs the heat of the exhaust gas to form a gaseous heat exchange medium. The heat exchange medium pushes the turbofan blades ZC12 and the main shaft ZC11 to rotate. The main shaft ZC11 drives the rotor ZC31 of the generator motor ZC3 to rotate together, and the generator motor ZC3 generates electricity, thereby realizing the use of exhaust heat to generate electricity; When the engine ZC2 stops working or idling, the injection pump is used to inject fuel into the turbofan transducer ZC1. The fuel burns to form thermal expansion, which drives the turbofan blades ZC12 and the main shaft ZC11 to rotate. The main shaft ZC11 drives the rotor ZC31 of the generator motor ZC3 to rotate together. The generator motor ZC3 generates electricity. The turbofan energy conversion power generation system of the present invention can make full use of the thermal energy and tail pressure of the exhaust gas to generate power, reduce the environmental pollution caused by the heat discharged by the engine ZC2, and realize the recovery of the exhaust gas thermal energy, and the overall structure of the turbofan energy conversion power generation system is simple , Takes up less space.

At the same time, the present invention provides a power generation method, including the following steps:

The exhaust air discharged from the engine ZC2 passes through the turbofan blade ZC12 of the turbofan transducer ZC1, and drives the turbofan blade ZC12 and the main shaft ZC11 to rotate. The main shaft ZC11 drives the rotor ZC31 of the generator motor ZC3 to rotate together, and the generator motor ZC3 generates electricity;

When the exhaust gas temperature is greater than the set temperature, the injection pump is used to inject liquid heat exchange medium into the turbofan transducer ZC1. The liquid heat exchange medium absorbs the heat of the exhaust gas to form a gaseous heat exchange medium, and the heat exchange medium pushes the turbofan blade ZC12 And the main shaft ZC11 rotates, the main shaft ZC11 drives the rotor ZC31 of the generator motor ZC3 to rotate together, and the generator motor ZC3 generates electricity;

When the engine ZC2 stops working or idling, the injection pump is used to inject fuel into the turbofan transducer ZC1. The fuel burns to form thermal expansion, which drives the turbofan blades ZC12 and the main shaft ZC11 to rotate. The main shaft ZC11 drives the rotor ZC31 of the generator motor ZC3 to rotate together. The generator motor ZC3 generates electricity.

The power generation method of the present invention realizes power generation based on the above steps, and can make full use of the thermal energy and tail pressure of the exhaust gas to generate power, reduce the environmental pollution caused by the heat emitted by the engine ZC2, and the power generation system adopted by the method of the present invention has a simple structure and The space occupied is small, which facilitates the implementation of the power generation method. In addition, the power generation method of the present invention can continuously generate power based on the above steps.

The heat exchange medium in this embodiment specifically uses water, and in other embodiments, the heat exchange medium may also be methanol, ethanol, or oil. In this embodiment, when the exhaust gas temperature is greater than 250 degrees Celsius, an injection pump is used to inject water into the turbofan transducer ZC1, and the water exchanges heat with the exhaust gas to form steam, thereby using the steam to drive the turbofan blades ZC12 and the main shaft ZC11 to rotate. In addition, the injection pump in this embodiment is connected to the water storage device and the fuel storage device, so that water or fuel can be injected into the turbofan transducer ZC1 when needed.

As shown in Figure 2, the turbofan transducer ZC1 in this embodiment also includes a housing ZC13. An expansion chamber ZC14 is formed between the housing ZC13 and the turbofan blades ZC12. The expansion chamber ZC14 communicates with the exhaust port of the engine ZC2. And the above-mentioned injection pump communicates with the expansion chamber ZC14. At the same time, the injection pump is specifically connected to the expansion chamber ZC14 through the heat exchange tube ZC15, the heat exchange tube ZC15 is located in the expansion chamber ZC14, and the heat exchange tube ZC15 can be cylindrical spiral, so that the heat exchange tube ZC15 and the exhaust gas in the expansion chamber ZC14 The contact area is greatly increased. In this way, when the injection pump injects water into the heat exchange tube ZC15, the water can fully exchange heat with the exhaust gas in the expansion chamber ZC14 when flowing in the heat exchange tube ZC15, and a large amount of steam is formed in the expansion chamber ZC14, and finally the steam acts On the turbofan blade ZC12, the turbofan blade ZC12 and the main shaft ZC11 are driven to rotate.

As shown in FIG. 2, the turbofan blade ZC12 in this embodiment may specifically include a turbofan rotor blade ZC121 and a turbofan stator blade ZC122. The thermal expansion formed by the tail pressure, steam, or fuel combustion of the exhaust gas specifically acts on the vortex fan blade ZC121 to drive the vortex fan blade ZC121 and the main shaft ZC11 to rotate.

In addition, the turbofan energy conversion power generation system in this embodiment further includes a battery pack, which is connected to the generator motor ZC3. The electric energy generated by the generator motor ZC3 is stored in the battery pack. At the same time, the turbofan energy conversion power generation system in this embodiment also includes an electric driving force hub and a controller. The turbofan energy conversion power generation system stores the generated electricity in a battery pack and converts it into power again through the electric driving force hub to push or assist the vehicle to travel.

In this embodiment, during the process of injecting fuel into the turbofan transducer ZC1, the fuel injected into the turbofan transducer ZC1 is ignited by the plasma electric field.

The turbofan energy conversion power generation system in this embodiment belongs to the technical fields of environmental protection, energy saving, emission reduction, etc., and can be applied to the power of transportation vehicles, specifically, oil-electric, oil-gas, gas-electric hybrid power. In addition, the turbofan energy conversion power generation system is related to thermal, electromechanical, and mechanical power generation, electric power, and engine braking.

The turbofan energy conversion power generation system in this embodiment can use the energy recovered from the exhaust gas to generate electricity, and the generated electricity is stored in the battery pack as an electric drive source to increase power and realize hybrid transportation, which is environmentally friendly and energy-saving , It also improves fuel economy and reduces the weight of the overall equipment.

The turbofan energy conversion power generation system in this embodiment is simplified, and integrates continuous power generation, braking energy conversion, tail pressure conversion, tail heat conversion, fuel conversion, and power generation and electric power. The turbofan energy conversion power generation system in this embodiment can be specifically installed on the engine exhaust system of a 13-liter diesel engine truck, and can achieve hybrid tail heat power generation. The thermal efficiency of the engine ZC2 can be increased by more than 10%, and the vehicle power can also be increased. a lot of. While achieving fuel saving, it also achieves the goals of environmental protection and energy saving, and also achieves low-temperature exhaust emission, which is suitable for low-temperature processes to recover exhaust pollutants. In this embodiment, the turbofan transducer ZC1 is a rotating turbofan driven by the tail heat and tail pressure, which can transfer the tail heat by exciting water vapor, or inject the oxygen in the fuel combustion tail gas for energy conversion. The aforementioned expansion chamber ZC14 is also called a combustion steam chamber. The rotor ZC31 of the generator motor ZC3 is specifically a field coil rotor, and the stator ZC32 is specifically a stator field coil. In addition, the generator motor ZC3 also includes bearings. The engine ZC2 in this embodiment is specifically an internal combustion engine.

The specific process of the turbofan energy conversion power generation system in this embodiment to realize the tail pressure conversion is: the engine ZC2 generates high temperature and high pressure exhaust air through the turbofan blades ZC12, which directly drives the turbofan to rotate, and adjusts the rotor ZC31 excitation current to ensure that the engine ZC2 back pressure normal value range, adjust power generation load, output current.

The specific process of the turbofan energy conversion power generation system in this embodiment to achieve tail heat energy exchange is: on the basis of tail pressure power generation, when the exhaust gas temperature is greater than 250 degrees Celsius, water is injected into the heat exchange tube ZC15, and the exhaust gas is heated in the combustion steam chamber. The steam is generated, which pushes the vortex fan to continue to rotate, and the shaft power is generated through the excitation coil and the stator ZC32.

The specific process of the turbofan energy conversion power generation system in this embodiment to achieve combustion conversion is: when the engine ZC2 stops working or idling, the turbofan transducer ZC1 is used to generate power; the heat exchange tube ZC15 is used to directly inject fuel and pass The plasma electric field is ignited to produce thermal expansion, which pushes the turbofan to rotate and drives the engine ZC2 to generate electricity.

The specific process of the turbofan energy conversion power generation system in this embodiment to achieve braking power generation is: when the vehicle is going downhill, the engine ZC2 idling compressed air passes through the turbofan, and the generator reluctance damping is used to drag the engine ZC2 main shaft ZC11 to decelerate; Power generation.

The specific process of the turbofan energy conversion power generation system in this embodiment to achieve electric braking is as follows: when greater braking power is required, on the basis of the engine ZC2 braking, the excitation direction of the stator ZC32 and the rotor ZC31 are changed to turn the generator into The electric motor reversely pushes the turbofan, increases the air pressure resistance of the engine ZC2, and realizes dynamic braking.

The specific process of the turbofan energy conversion power generation system in this embodiment to achieve hybrid power is: storing the power generation in the battery pack, and re-converting it into power through the electric hub, that is, the electric driving force hub, to push or assist the vehicle to travel, thereby achieving Electric and fuel power, gas power hybrid.

The turbofan energy conversion power generation system in this embodiment can realize tail heat and tail pressure power generation, electric tail pressure braking, internal combustion engine power and electric motor power mixing, continuous mixing of fuel power and battery power, fuel gas mixing, piston turbofan mixing Power generation, engine tail heat power generation, engine tail pressure power generation, engine tail heat tail pressure power generation, fuel tail pressure power generation, engine brake power generation, tail heat power generation, brake power generation, fuel power generation, power braking. The overall structure of the turbofan energy conversion power generation system in this embodiment is simple, and the efficiency is higher, which is convenient for applying it to vehicles. The turbofan energy conversion power generation system in this embodiment can also be referred to as a turbofan generator.

The turbofan transducer according to an embodiment of the present invention will be described in detail below with reference to FIGS. 3-9.

FIG. 3 shows a perspective exploded view of the turbofan transducer 100 according to an embodiment of the present invention. As shown in Figure 3, the turbofan transducer 100 of the present invention as a whole includes a housing 10, a main shaft 20, and a turbofan blade 30. The turbofan blades 30 are mounted on the main shaft 20 and arranged in the housing 10. A chamber 11 is formed inside and an air inlet 12 and an air outlet 13 are provided. The air inlet 12 is used to connect the exhaust port of the engine. The exhaust gas discharged from the engine can enter the chamber 11 through the air inlet 12 and drive the chamber 11 The inner turbofan blade 30 drives the main shaft 20 to rotate. Through structural optimization, the turbofan transducer of this embodiment inputs engine exhaust gas into the chamber to perform work on the turbofan blades, effectively utilizes the kinetic energy of the engine exhaust gas, turns waste into treasure, and realizes reasonable and efficient use of energy.

The turbofan transducer 100 according to an embodiment of the present invention will be further described in detail below in conjunction with FIG. 3. As shown in FIG. 3, a guide portion 143 is provided inside the casing 10, and the engine exhaust gas entering from the intake port 12 is guided along the guide portion 143 and flows to the turbofan blade 30. The guide portion 143 has a smooth surface. Specifically, in the embodiment shown in FIG. 3, a tapered structure 14 is provided inside the housing 10, and the tapered structure 14 is fixedly connected to the inner wall of the housing 10, and the front surface of the tapered structure 14 forms the aforementioned guide portion. 143. The guide portion 143 guides the engine exhaust gas, which effectively reduces the kinetic energy loss of the engine exhaust gas, and directs the engine exhaust gas to the effective part of the turbofan blade 30 to improve the energy conversion efficiency.

FIG. 4 is a partial enlarged view of FIG. 3, which shows the cone structure 14 and the turbofan blade 30. As shown in FIG. 4, the tapered structure 14 includes a tapered piece 141 and a ring piece 142, and the ring piece 142 is arranged around the outer circumference of the tapered piece 141. Specifically, the front of the cone 141 forms a cone 1411, the rear of the cone 141 forms an annular body 1412, the outer surface of the cone 1411 forms the above-mentioned guide portion 143, and the annular body 1412 is fixed to the inner wall of the annular member 142. An air flow channel 144 is connected and formed between the outer wall of the ring body 1412 and the inner wall of the ring member 142. The ring body 1412 and the ring member 142 are connected, for example, by a plurality of connecting posts (not shown) distributed at intervals. One end of the connecting column is connected to the outer wall of the ring body 1412, and the other end of the connecting column is connected to the inner wall of the ring member 142. Preferably, a plurality of connecting columns are evenly distributed around the ring body 1412. For example, three connecting columns are used. A connecting column extends through the center of the ring body 1412, and an included angle of 120 degrees is formed between every two connecting columns.

The ring member 142 is fixed inside the housing 10 so as to fix the air guiding portion 143 and the housing 10. Preferably, the outer wall of the ring member 142 is in close contact with the inner wall of the housing, so that the engine exhaust gas entering from the air inlet 12 is guided by the guide portion 143, and only passes through the inner wall of the ring member 142 and the outer wall of the ring body 1412. The air flow channel 144 formed therebetween flows to the turbofan blade 30. Since the connecting pillars are arranged in the air flow channel 144, in order to ensure that the exhaust gas from the engine flows efficiently along the air flow channel 144, the number and size of the connecting pillars need to be optimized. In this embodiment, the inventors have gone through a lot of experiments and simulations. It was unexpectedly found that choosing three connecting posts has a good effect, which can effectively fix the cone 141 and the ring 142 without affecting the smooth passage of the exhaust gas from the engine.

Preferably, the back surface of the cone 141, that is, the surface of the ring body 1411 facing the turbofan blade 30, is provided with a groove 145, the bottom of the groove 145 is provided with a spindle front end mounting hole 146, and the front end of the spindle 20 is mounted on the spindle mounting hole Within 146. A bearing may be arranged in the groove 145, and the front end of the main shaft 20 is rotatably fixed in the groove 145 through the bearing.

Fig. 5A is a cross-sectional view of the housing 10, and Fig. 5B is a left view of the housing 10. As shown in Figs. 5A-5B and combined with Fig. 3, the housing 10 as a whole includes a first part 10A, a second part 10B and a third part which are independent of each other. The part 10C, the first part 10A and the second part 10B together form the main part of the housing, and the third part 10C is installed in front of the main part of the housing 10. In this example, the main body of the housing 10 is formed in a cylindrical shape, that is, the first part 10A and the second part 10B can be understood as the cylindrical main part of the housing 10 cut from a plane along the axis. The inside of the first part 10A forms a part of the chamber 11, and the inside of the second part 10B forms the other part of the chamber 11. When the first part 10A and the second part 10B are put together, the whole chamber 11 is formed inside .

Correspondingly, the third part 10C is formed into a tapered shape as a whole, and its outer diameter is from back to front, that is, from the first part 10A and the second part 10B close to the housing 10 to the first part 10A and the second part away from the housing 10 10B gradually shrinks, forming a tapered surface. Correspondingly, the inside of the third part 10C forms a tapered inner surface, and the tapered inner surface matches the outer surface of the cone 1411 of the tapered structure 14, and the tapered inner surface of the third part 10C and the tapered structure 14 An airflow channel is formed between the outer surfaces of the cone 1411 to guide the engine exhaust gas entering from the intake port 12.

For the convenience of description, the housing will now be described with the direction shown in FIG. 5A as the reference direction. However, those skilled in the art will understand that during use, the turbofan transducer 100 can be adjusted in direction according to the use situation. As shown in FIG. 5A, the front end of the housing 10 is provided with an air inlet 12, and the rear of the housing 10 is provided with an air outlet 13, preferably two air outlets 13 are provided. The two air outlets 13 are preferably located on the same side of the main shaft 20. It is located below the main shaft 20 in FIG. 5A. As a preferred way, the two air outlets 13 extend in the same direction and are perpendicular to the main shaft 20. Preferably, the two air outlets 13 can be coaxially arranged, and both are arranged downstream of the turbofan blades 20. After the exhaust gas flows through the entire turbofan blade 30 to perform work, it flows out of the turbofan transducer from the two air outlets 13. The outflow gas can be purified by an exhaust gas purification device, and then discharged into the air, thereby reducing or even Eliminate environmental pollution caused by engine exhaust.

The rear of the housing 10 is provided with a bearing installation groove 18, the bearing installation groove 18 is provided with a through hole 181 extending along the main shaft direction, and the bearing installation groove 18 is provided with a bearing. The rear end of the main shaft 20 is rotatably installed on the bearing through the bearing. The installation groove 18 is connected to the outside through the through hole 181, so that the kinetic energy generated by the rotation of the turbofan blades driven by the engine exhaust is output to the outside, for example, transmitted to the rotor of the generator, and then converted into electric energy.

FIG. 6 is a perspective view of the second part 10B of the housing 10. The second part 10B of the housing 10 will now be described with reference to FIG. 6. The first part 10A and the second part 10B of the housing 10 are mostly similar in structure, except that two air outlets 13 are omitted. The first part 10A of 10 is detailed. As shown in FIG. 6, two air outlets 13 are provided on the second part 10B of the housing 10, and the two air outlets 13 extend along the same axis and are perpendicular to the main shaft 20. A bearing installation groove 18 is provided behind the air outlet 13. The bearing installation groove 18 on the second part 10B is semicircular in shape and cooperates with another part of the bearing installation groove on the first part 10A of the housing 10 to form a complete bearing installation groove. The bottom of the second part 10B is also provided with a mounting portion 19 through which the entire turbofan transducer can be mounted on the chassis of a car, for example, or any other suitable place. In the embodiment shown in FIG. 6, the mounting portion 19 is a plate provided at the bottom of the second portion 10B of the housing 10. Of course, those skilled in the art will understand that the mounting portion 19 can also adopt other structures.

Referring to Figure 6 in conjunction with Figures 4 and 5A, a plurality of turbofan vane installation steps 161 are formed inside the chamber 11, and the upstream direction that defines the flow direction of the airflow in the chamber is forward, and the downstream direction is backward. 30 includes a turbofan moving blade 31 and a turbofan stationary blade 32, and the turbofan stationary blade 32 is fixedly installed on the turbofan stationary blade installation step 161. The front end of the chamber 11, that is, the front end of the first part 10A and the second part 10B of the housing 10, that is, the end close to the third part 10C, is formed with a ring member mounting groove 162, and the ring member 142 of the tapered structure 14 is fitted to The ring member is installed on the groove 162 and pressed and fixed from the front by the third part 10C of the housing 10 to fix the cone structure 14 inside the housing 10.

In the embodiment shown in FIG. 6, the multiple turbine fan stator blade installation steps in the housing 10 include three turbine fan stator blade installation steps, which are the first turbine fan stator blade installation steps 161A in sequence along the flow direction of the airflow. The second turbine fan stator blade installation step 161B, and the third turbine fan stator blade installation step 161C. With reference to Figures 4 and 6, the first turbofan stator blade installation step 161A installs the first turbofan stator blade 32A, the second turbofan stator blade installation step 161B installs the second turbofan stator blade 32B, and the third turbofan stator blade installation The step 161C installs the third turbofan vane 32C, the ring member mounting groove 162 is arranged in front of the first turbofan vane mounting step 161A, between the first turbofan vane mounting step 161A and the second turbofan vane mounting step 161B , Between the second turbofan stator blade installation step 161B and the third turbofan stator blade installation step 161C, and behind the third turbofan stator blade installation step 161C are each provided with an escape portion 163, the escape portion 163 and the turbofan rotor blade 31 cooperate. Referring to Figures 3-4, the engine exhaust gas entering from the intake port 12 is guided through the tapered guide portion 143, flows to the first turbofan vane 32A through the fluid channel 144, and then flows through the first turbofan vane 31A and the first turbofan vane 31A in turn. The second turbofan vane 32B, the second turbofan vane 31B, the third turbofan vane 32C, and the third turbofan vane 31C, and then flow out of the turbofan transducer 100 through the air outlet 13, and flow through the turbofan rotor in the exhaust In the process, work is done on the vortex fan blades to drive the vortex fan blades to drive the main shaft 20 to rotate.

Continuing to refer to FIG. 6, the upper surface of each turbofan vane mounting step 161 of the second part 10B of the casing 10, that is, the surface facing the first part 10A of the casing 10, is provided with a turbofan vane fixing groove 165, each A turbofan stator blade 32 is provided with a turbofan stator blade fixing part (described in detail below) on the outer circumference, and the turbofan stator blade 32 is fixedly installed through the turbofan stator blade fixing part and the turbofan stator blade fixing groove 165 In the inside of the housing 10. For example, the fixed portion of the turbofan vane is a protrusion provided on the vane of the turbofan, and the first part 10A and the second part 10B of the casing 10 are closed by extending the protrusion into the fixed groove 16 of the turbofan vane. , So that the protrusion is pressed tightly, and the turbine vane is fixed in the housing 10.

In the present invention, the turbofan blades include a turbofan vane and a turbofan vane. A group of turbofan blades is defined as including a turbofan vane and a turbofan vane. The embodiment shown in FIG. 3 includes three sets of turbofans. The blades, however, it should be understood that in other embodiments, it may also include two sets of turbofan blades, four sets of turbofan blades, etc., and in some cases, may include a set of turbofan blades.

The specific structures of the turbofan vanes 31 and the turbofan vanes 32 of a set of turbofan blades 30 according to an embodiment of the present invention will be described in detail below with reference to FIGS. 7 and 8. It should be understood that the structures and shapes of the turbofan blades 31 and the turbofan stator blades 32 described herein are applicable to the turbofan blades and the turbofan stator blades of any set of turbofan blades.

Fig. 7 is a front view of one set of the vortex fan blades 31. As shown in Fig. 7, the vortex fan blades 31 include a blade base 311 and a plurality of blades 312. The blade base 311 is disk-shaped as a whole, and A first mounting hole 313 is provided in the middle. The first mounting hole 313 can be directly matched with the main shaft 20 to directly fix and install the turbofan blade 31 on the main shaft 20. The first mounting hole 311 can also pass through the first connector 314 (refer to Figure 4) is installed on the main shaft 20, that is, the first connecting member 314 is also in the shape of a disc. The inner diameter of the first mounting hole 311 matches the outer diameter of the first connecting member 314, and the middle part of the first connecting member 314 is provided with the main shaft 20 mating third connecting hole 315 (refer to FIG. 4), the blade base 311 of the turbofan blade 31 is fixedly connected with the first connecting member 314, for example, by welding, the first connecting member 314 is fixedly installed on the main shaft 20 Therefore, the vortex fan blade 314 is fixedly installed on the main shaft 20, so that the vortex fan blade 31 can drive the main shaft 20 to rotate together. The plurality of moving blades 312 are arranged on the outer circumference of the moving blade base 311, and it is preferable that the plurality of moving blades 312 and the moving blade base 311 are integrally formed. The ends of the plurality of moving blades 312 away from the center of the circle are located on the same circle, and the circle is defined as the outer circumference of the group of turbofan blades.

Figure 8 is a front view of a set of turbofan vanes 32. The turbofan vane 32 includes a vane base 321 and a plurality of vanes 322. The vane base 321 is disk-shaped as a whole, and a second The inner diameter of the second installation hole 323 is larger than the inner diameter of the main shaft 20. The second mounting hole 232 can be directly sleeved on the main shaft 20, or can be sleeved on the main shaft 20 through a second connecting piece 324 (refer to FIG. 4), that is, the second connecting piece 324 is also in the shape of a disc. The inner diameter of the hole 321 is matched with the outer diameter of the second connecting piece 324. The middle of the second connecting piece 324 is provided with a fourth connecting hole 325 that is matched with the main shaft 20. The inner diameter of the fourth connecting hole 325 is larger than the outer diameter of the main shaft 20, so that The main shaft 20 can smoothly rotate in the fourth connecting hole 325 under the driving of the vortex fan blade 31. Wherein, the stator base 321 is fixedly connected to the second connecting member 324, for example, by welding. A plurality of stationary blades 322 are arranged on the stationary blade base 321 and extend in the radial direction. The outer ends of the plurality of stationary blades 322, that is, the end away from the center of the circle, are connected by a continuous outer peripheral portion 326. The outer peripheral portion 326 is provided with a mounting portion 327, and the turbofan vane 32 is fixedly installed inside the casing 10 through the mounting portion 327 . Specifically, the mounting portion 327 is two protruding portions provided on the outer peripheral portion 326, and the connecting line of the two protruding portions passes through the center of the circle, and the two protruding portions 327 are fixed in the turbine vane fixing groove 165 ( Referring to FIG. 6), the first part 10A and the second part 10B of the housing 10 are closed and compressed, so that the turbofan vane 32 is fixedly installed in the housing 10.

Referring back to FIG. 7, it is defined that twice the distance between the outer end of the vortex fan blade 31 and the center O is the outer diameter D of the vortex fan blade 31, which defines the distance between the root of the vortex fan blade 31 and the center O Twice is the inner diameter d of the turbofan blade, and the area occupied by multiple turbofan blades is Sy. Define the air passing area of the turbofan blade as S, then S satisfies the following relationship: S=Π(D2-d2)/4-Sy . Define the air passage area of the air inlet 13 as S0, and the air passage area of the n-th group of vortex fan blades as Sn. After a large number of experiments and simulations, the inventor unexpectedly discovered that the passage area S1 of the first group of vortex fan blades satisfies the relationship with the passage area S0: when S1 is less than S0*45% and greater than S0*98%, the power generation efficiency is maximum, and at the same time It will not affect the engine or the turbocharger of the engine. In addition, preferably, when S0 satisfies the relationship S1 is less than or equal to S0*70% and greater than or equal to S0*95%, the effect is more significant.

It should be noted that the air passage areas of the turbofan vanes and the turbofan vanes of the same group of turbofan blades are roughly the same.

In addition, after a large number of experiments and simulations, the inventor also unexpectedly discovered that the highest exhaust gas energy utilization rate can be achieved by configuring in the following way, that is, along the direction of gas flow in the shell, n sets of turbofan blades are arranged in sequence, and each set The outer diameter D of the turbofan blades is between 40-300mm, and the outer diameter D increases sequentially along the airflow direction, and satisfies the outer circumference of the n+1th group of turbofan blades and the outer circumference of the nth group of turbofan blades The included angle between the tangent to the main shaft 20 is between 4-12 degrees, preferably between 5-10 degrees, which can achieve the highest energy conversion efficiency.

FIG. 9 is a cross-sectional view of the turbofan transducer 100 according to an embodiment of the present invention. Referring to Figure 9 and in conjunction with Figure 3, it is defined that the end where the air inlet 12 is located is the front end, and the end far away from the air inlet 12 is the rear end. The front end of the main shaft 20 is rotatably mounted in the cone structure 14 through a bearing. The rear end is rotatably installed in the bearing mounting hole 18 at the rear end of the housing 10 through a bearing, and extends outward through the through hole 181 in the bearing mounting hole 18, thereby outputting power to the outside, for example, to the generator Rotor. A plurality of sets of turbofan blades 30 are installed on the main shaft 20, among which, the turbofan blades 31 are fixedly installed on the main shaft 20, the turbofan vanes 32 are fixedly installed in the housing 10, and the plurality of sets of turbofan blades 30 are from the front along the direction of the main shaft 20 The outer diameter increases backwards and the arrangement is increased. After the turbofan blade 30 and the main shaft 20 are installed in the housing 10, the first part 10A and the second part 10B of the housing 10 are closed, and then the tapered structure 14 is installed on the first part 10A and the second part of the housing 10 In the annular member installation groove 162 formed at the front end of 10B, the third part 10C of the housing 10 is then installed to press and fix the tapered structure 14 to complete the installation of the entire turbofan transducer.

During operation, the airflow flows in from the air inlet 12, and flows to the turbofan blades 30 along the airflow channel 144 under the guidance of the guide portion 143. By doing work on the turbofan blades 30 and driving the main shaft 20 to rotate, the kinetic energy is input to the main shaft 20 Externally, for example, by connecting the main shaft 20 to the rotor of the generator, the kinetic energy is further converted into electric energy, and the exhaust gas discharged from the engine is generated to generate electricity. The gas after working on the turbofan blades is discharged through the gas outlet 13, for example, the gas outlet 13 may be connected to an exhaust gas purification device, and be purified in the exhaust gas purification device, and then discharged into the environment.

It should be noted that, in another embodiment of the present invention, an opening communicating with the internal fluid channel can also be provided on the side wall of the third part 10C of the housing 10, and a control valve is provided in the opening to control the inlet The gas pressure entering the gas port 12.

It should also be noted that although the aforementioned turbofan transducer 100 has one air inlet and two air outlets, according to actual needs, one air inlet and one air outlet, or one air inlet and The multiple air outlets and the direction of the air inlets can also be changed, for example, they are arranged in a direction perpendicular to the main shaft, or in a direction with an angle less than 90 to the main shaft. It only needs to divert the gas entering from the air inlet to the turbofan blade counter to do work, and then flow out of the shell from the air outlet. Of course, it should be noted that the turbofan transducer 100 described in detail in the above embodiment is an optimal structure unexpectedly discovered by the inventor through a large number of experiments and simulations.

It should also be noted that the turbofan transducer 100 described above with reference to FIGS. 3-9 can be used in the turbofan transducer power generation system described in FIG. 2.

Next, referring to FIG. 10, a turbofan energy conversion power generation system 200 according to another embodiment of the present invention will be described. As shown in Figure 10, the turbofan energy conversion power generation system 200 includes the above-mentioned turbofan transducer 100, a generator 201, a thermal energy conversion agent preheating chamber 202, a thermal energy conversion agent chamber 203, and a thermal energy conversion agent heating chamber 204. The arrow direction is the flow direction of the thermal energy conversion agent. The casing of the turbofan transducer 100 in this embodiment is provided with an injection port 101 leading to the cavity 11 in the casing 10. The exhaust gas first flows into the conversion agent heating chamber 204. In the thermal energy conversion agent heating chamber 204, the thermal energy of the exhaust gas is used to heat the thermal energy conversion agent, and then high-energy steam is injected into the cavity 11 of the turbofan transducer 100 through the injection port 101. Work is performed on the turbofan blades in the chamber 11, so that the turbofan blades drive the main shaft to rotate, and the main shaft drives the rotor of the generator 201 to rotate, which converts the waste heat of the exhaust gas into electric energy. The exhaust gas flowing from the outlet 13 of the turbofan transducer 100 preheats the thermal energy conversion agent delivered from the thermal energy conversion agent chamber 203 to the thermal energy conversion agent preheating chamber 202 in the thermal energy conversion agent preheating chamber 202, and then Discharged to the outside, of course, can also be discharged to the exhaust gas purification device for purification and then discharged to the outside. The thermal energy conversion agent preheated in the thermal energy conversion agent preheating chamber 202 flows into the conversion agent heating chamber 204, and the thermal energy conversion agent is heated by the exhaust gas discharged from the engine.

The foregoing only describes the differences between the turbofan energy conversion power generation system 200 and the aforementioned turbofan energy conversion power generation system. For the parts not mentioned in the turbofan energy conversion power generation system 200, refer to the aforementioned turbofan energy conversion system described in conjunction with FIG. The related description of the power generation system will not be detailed here.

The following describes a method for generating electricity by using engine exhaust gas according to the present invention with reference to FIG. 11. The method includes the following steps:

Step S100: Pass the exhaust gas of the engine into the aforementioned turbofan transducer.

A turbocharger is usually arranged behind the exhaust port of the engine. After the gas flowing out of the exhaust port of the engine passes through the turbocharger, it is then passed to any of the embodiments described above in conjunction with Figures 3-9. In the turbofan transducer 100.

Step S200: Utilize the turbofan transducer to drive the generator to generate electricity.

The output end of the main shaft of the above-mentioned turbofan transducer 100 is connected to the rotor of the generator, and the exhaust gas drives the turbofan blades in the turbofan transducer to drive the main shaft to rotate, thereby driving the generator rotor to rotate and generate electricity.

In another embodiment, the above method may further include the following steps:

Step S300: Before the exhaust gas of the engine is passed into the turbofan transducer, the exhaust gas of the engine is used to heat the thermal energy conversion agent.

Before the exhaust gas of the engine is passed into the air inlet of the above-mentioned turbofan transducer, the heat energy conversion agent is heated by the heat energy conversion agent heating chamber.

Step S400: Pass the heat energy conversion agent steam heated in step S300 into the turbofan transducer to perform work on the turbofan blades of the turbofan transducer.

The thermal energy conversion agent steam heated in step S400 is injected into the cavity (expansion chamber) of the turbofan transducer through the injection port of the turbofan transducer, and performs work on the turbofan blades.

In another embodiment, the above method further includes the following steps:

Step S500: Preheat the thermal energy conversion agent with the gas flowing out of the turbofan transducer.

The gas flowing out from the air outlet of the turbofan transducer is passed into the thermal energy conversion agent preheating chamber to preheat the thermal energy conversion agent.

Step S600: Before the exhaust gas of the engine is passed into the turbofan transducer, the exhaust gas of the engine is used to heat the thermal energy conversion agent preheated in step S500.

Before passing the exhaust gas of the engine into the intake port of the above-mentioned turbofan transducer, let it heat the thermal energy conversion agent preheated in step S300. For example, the thermal energy conversion agent preheated in step 500 can be passed through Enter the heat energy conversion agent heating chamber, and then pass the exhaust of the engine into the heat energy conversion agent heating chamber to heat the heat energy conversion agent preheated in step S300.

Step S700: Pass the thermal energy conversion agent steam heated in step S600 into the turbofan transducer to perform work on the turbofan blades of the turbofan transducer.

The thermal energy conversion agent steam heated in step S600 is injected into the cavity (expansion chamber) of the turbofan transducer through the injection port of the turbofan transducer, and performs work on the turbofan blades.

In another embodiment, it may further include the following steps:

Step S800: monitor the pressure at the air inlet of the turbofan transducer and control it within the range of 0-60 kpa.

It should be noted that the order of the above steps can be exchanged, and the numbering of the above steps is for convenience of description and does not constitute a restriction on the order of the steps.

From the above description, it can be seen that the turbofan transducer, the turbofan energy conversion power generation system and the method for generating power using engine exhaust gas of the present invention can efficiently use the energy in the exhaust gas discharged from the engine, and can further convert the energy into electric energy , To reduce the environmental pollution caused by the exhaust gas discharged by the engine, and realize the recovery of the exhaust gas energy, and the turbofan transducer has a simple overall structure, small space occupation, and easy installation and use.

In summary, the present invention effectively overcomes various shortcomings in the prior art and has high industrial value.

The preferred embodiments of the present invention have been described in detail above, but it should be understood that after reading the above teaching content of the present invention, those skilled in the art can make various changes or modifications to the present invention. These equivalent forms also fall within the scope defined by the appended claims of this application.

Claims (38)

1. A turbofan transducer, characterized in that, the turbofan transducer includes a casing, a main shaft, and turbofan blades, the turbofan blades are installed on the main shaft and arranged in the casing, and the The inside of the housing forms a cavity and is provided with an air inlet and an air outlet. The air inlet is in fluid communication with the exhaust port of the engine. The exhaust gas discharged from the engine enters the cavity through the air inlet and drives the vortex. The fan blades move to drive the main shaft to rotate.
2. The turbofan transducer according to claim 1, wherein the casing is provided with a guide portion, and exhaust gas entering from the air inlet is guided along the guide portion and flows to the turbofan blade.
3. The turbofan transducer according to claim 2, wherein a cone structure is provided inside the casing, and the cone structure is fixedly connected to the inner wall of the casing, and The surface of the structure forms the flow guide.
4. The turbofan transducer according to claim 3, wherein the tapered structure includes a tapered member and an annular member, the front of the tapered member forms a cone, and the rear of the tapered member An annular body is formed, the outer surface of the tapered body forms the flow guide, the annular body is fixedly connected to the inner wall of the annular member and an air flow is formed between the inner wall of the annular member and the outer wall of the annular body aisle.
5. The turbofan transducer according to claim 3, wherein the front end of the main shaft is rotatably installed in the conical structure.
6. The turbofan transducer according to claim 3, wherein the back surface of the tapered member is provided with a groove, the bottom of the groove is provided with a bearing mounting hole, and one end of the main shaft can pass through a bearing. It is rotatably installed in the bearing installation hole.
7. The turbofan transducer according to claim 4, wherein the front part of the chamber forms a cone-shaped chamber, the cone-shaped member is installed in the cone-shaped chamber, and the cone-shaped member An air flow channel is formed between the outer wall and the inner wall of the tapered chamber.
8. The turbofan transducer according to claim 2, wherein the air inlet is provided at the front end of the housing and extends along the main axis, and the air outlet is provided at the front end of the housing. On the side wall, the turbofan blades are arranged between the air inlet and the air outlet.
9. The turbofan transducer according to claim 8, wherein the turbofan transducer includes at least two air outlets, and the housing includes a first part and a second part cut along a plane passing through the main shaft , The at least two air outlets are arranged on the first part or the second part.
10. The turbofan transducer according to claim 8, wherein the at least two air outlets extend along the same axis.
11. The turbofan transducer according to claim 8, wherein the at least two air outlets are arranged extending in a direction perpendicular to the main axis.
12. The turbofan transducer according to claim 1, wherein the turbofan transducer comprises an air inlet and an air outlet, and the air inlet and the air outlet are respectively arranged at the The front and rear of the housing are arranged perpendicular to the main shaft.
13. The turbofan transducer according to claim 1, wherein the housing includes a first part, a second part, and a third part that are independent of each other, and the first part and the second part cooperate and are inside A first chamber is formed, and the inside of the third part forms a second chamber, wherein the turbofan blades are arranged in the first chamber, and the second chamber has an outer surface with the cone The matching shape, and the cone is arranged in the second chamber and forms an air flow channel between the outer surface of the cone and the inner wall of the second chamber.
14. The turbofan transducer according to claim 11, wherein a plurality of turbine fan stator blade installation steps are formed on the inner wall of the first chamber, and the distance between the plurality of turbine fan stator blade installation steps and the main shaft is The flow direction of the exhaust gas in the casing increases sequentially, and the turbine fan vane of the turbine fan blade is fixedly installed on the turbine fan vane installation step.
15. The turbofan transducer according to claim 14, wherein an opening communicating with the second chamber is provided on the side wall of the third part of the housing, and a control The valve controls the pressure of the gas entering from the inlet.
16. The turbofan transducer according to claim 1, wherein the turbofan transducer includes at least two sets of turbofan blades, and each set of turbofan blades includes a turbofan rotor blade and a turbofan stator blade, The turbofan blades are fixedly installed on the main shaft, and the turbofan stator blades are fixedly installed on the housing.
17. The turbofan transducer according to claim 16, wherein the at least two sets of turbofan blades are arranged in sequence along the airflow direction, and the outer diameters of the two sets of turbofan blades in the airflow direction increase sequentially and are located at 40mm -300mm.
18. The turbofan transducer according to claim 1, wherein the turbofan transducer comprises n sets of turbofan blades, and the n sets of turbofan blades are arranged in sequence around the main shaft, and the The outer diameters of the n groups of turbofan blades increase sequentially, and the angle formed by the tangent between the outer circumference of the n+1 group of turbofan blades and the outer circle of the nth group of turbofan blades and the main axis is between 4-12 degrees; Ideally located between 5-10 degrees.
19. The turbofan transducer according to claim 18, wherein the turbofan transducer includes three sets of turbofan blades.
20. The turbofan transducer according to claim 18, wherein the outer diameter of each group of turbofan blades of the n groups of turbofan blades is between 40 mm and 300 mm.
21. The turbofan transducer according to claim 1, wherein the passage area S1 of the first group of turbofan blades and the passage area S0 of the air inlet satisfy the following relationship: S0*45%<S1<S0*98 %;

    Preferably, the air passing area S1 of the first group of turbofan blades and the air passing area S0 of the air inlet satisfy the following relationship: S0*70%≦S1≦S0*95%.
22. A turbofan energy conversion power generation system, characterized in that the turbofan energy conversion power generation system comprises the turbofan transducer and the generator according to any one of the above claims 1-21, and the turbofan transducer The main shaft is connected with the rotor of the generator and drives the rotor of the generator to rotate.
23. The turbofan energy conversion power generation system according to claim 22, wherein the turbofan energy conversion power generation system further comprises a thermal energy conversion agent chamber and a thermal energy conversion agent heating chamber, wherein the casing of the turbofan transducer An injection port leading to the cavity is provided on the upper part, the thermal energy conversion agent tank is in fluid communication with the thermal energy conversion agent heating chamber, and the thermal energy conversion agent heating chamber is in fluid communication with the injection port.
24. The turbofan energy conversion power generation system according to claim 23, wherein the turbofan energy conversion power generation system further comprises a thermal energy conversion agent chamber, a thermal energy conversion agent preheating chamber, and a thermal energy conversion agent heating chamber, wherein the vortex The housing of the fan transducer is provided with an injection port leading to the cavity, the heat energy conversion agent preheating chamber is in fluid communication with the air outlet of the turbofan transducer, and the heat energy conversion agent box is connected to the heat energy The converting agent preheating chamber is in fluid communication, the thermal energy converting agent preheating chamber is in fluid communication with the thermal energy converting agent heating chamber, and the thermal energy converting agent heating chamber is in fluid communication with the injection port.
25. A power generation method, characterized in that the method includes the following steps:

    Step 1: Pass the exhaust gas of the engine into the turbofan transducer according to any one of claims 1-17;

    Step 2: Use the main shaft of the turbofan transducer to drive the generator to generate electricity.
26. The method according to claim 25, wherein the method further comprises the step of heating the heat energy conversion agent with the exhaust gas of the engine before passing the exhaust gas of the engine into the turbofan transducer.
27. The method of claim 25, wherein the method further comprises the following steps:

    Step 3: Preheating the thermal energy conversion agent by using the gas flowing out from the air outlet of the turbofan transducer;

    Step 4: Before passing the exhaust gas of the engine into the turbofan transducer, the exhaust gas of the engine is heated to the preheated thermal energy conversion agent;

    Step 5: Pass the thermal energy conversion agent steam heated in Step 4 into the cavity of the turbofan transducer.
28. The method according to claim 25, characterized in that the method may further comprise the following steps: monitoring the back pressure of the exhaust gas of the engine and controlling it within the range of 0-60 kpa.
29. A turbofan energy conversion power generation system is characterized in that it comprises:

    The turbofan transducer includes a main shaft and a turbofan blade installed on the main shaft, and the turbofan transducer is in communication with the exhaust port of the engine;

    The injection pump can inject fuel and heat exchange medium into the turbofan transducer;

    The generator motor includes a rotor and a stator mounted on the main shaft.
30. The turbofan energy conversion power generation system according to claim 29, wherein the turbofan transducer further comprises a casing, an expansion chamber is formed between the casing and the turbofan blades, and the expansion chamber is connected to the engine The exhaust port is communicated, and the injection pump is communicated with the expansion chamber.
31. The turbofan energy conversion power generation system according to claim 29, wherein the injection pump is connected to the expansion chamber through a heat exchange tube, and the heat exchange tube is located in the expansion chamber.
32. The turbofan energy conversion power generation system according to claim 29, wherein the heat exchange tube is in a cylindrical spiral shape.
33. The turbofan energy conversion power generation system according to claim 29, wherein the turbofan blades comprise turbofan moving blades and turbofan stationary blades.
34. The turbofan energy conversion power generation system according to claim 29, wherein the heat exchange medium is water, methanol, ethanol, or oil.
35. The turbofan energy conversion power generation system of claim 29, further comprising a battery pack connected to the generator motor.
36. A power generation method, characterized in that it comprises the following steps:

    The exhaust air discharged by the engine passes through the turbofan blades of the turbofan transducer and drives the turbofan blades and the main shaft to rotate. The main shaft drives the rotor of the generator motor to rotate together, and the generator motor generates electricity;

    When the exhaust gas temperature is greater than the set temperature, the injection pump is used to inject liquid heat exchange medium into the turbofan transducer. The liquid heat exchange medium absorbs the heat of the exhaust gas to form a gaseous heat exchange medium. The heat exchange medium pushes the turbofan blades and the main shaft When rotating, the main shaft drives the rotor of the generator motor to rotate together, and the generator motor generates electricity;

    When the engine stops working or is idling, the injection pump is used to inject fuel into the turbofan transducer. The fuel burns to form thermal expansion and drives the turbofan blades and the main shaft to rotate. The main shaft drives the rotor of the generator motor to rotate together, and the generator motor generates electricity.
37. The power generation method according to claim 36, wherein when the exhaust gas temperature is greater than 250 degrees Celsius, an injection pump is used to inject water into the turbofan transducer.
38. The power generation method according to claim 36, wherein the fuel injected into the turbofan transducer is ignited by a plasma electric field.

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