CN214366252U

CN214366252U - Micro gas turbine combined cycle system with series tesla turbines

Info

Publication number: CN214366252U
Application number: CN202022616868.8U
Authority: CN
Inventors: 靳普
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-11-13
Filing date: 2020-11-13
Publication date: 2021-10-08
Anticipated expiration: 2030-11-13

Abstract

A micro gas turbine combined cycle system with a tandem tesla turbine, comprising a micro gas turbine with a tandem tesla turbine, the micro gas turbine combined cycle system with a tandem tesla turbine further comprising at least one of a fuel cell system, a steam power generation system, a solar receiver; this circulation system can further recycle the energy that carries in the regenerator exhaust, and then improve whole miniature gas turbine's efficiency, can solve SOFC electricity generation waste heat and regenerator exhaust waste heat's recovery problem simultaneously, with the heat cyclic utilization of each link output in the system, can improve entire system's electricity generation and recovery efficiency, but the while is integrated to set up, occupation space is little, in addition, through the pursuit to solar energy, accomplish the high-efficient utilization of solar energy, in order to improve system power generation efficiency, current tesla turbine pressure ratio is low can be solved to this circulation system in addition, easily cause loss of pressure, the problem of system inefficiency.

Description

Micro gas turbine combined cycle system with series tesla turbines

Technical Field

The utility model belongs to the technical field of miniature gas turbine technique and energy recuperation and utilization, concretely relates to miniature gas turbine combined cycle system with serial-type tesla turbine.

Background

The micro gas turbine is a small heat engine which is newly developed, the single-machine power range of the micro gas turbine is 25-300 kW, and the basic technical characteristics are that a radial-flow impeller machine and a regenerative cycle are adopted. In the prior art, a regenerator is generally adopted to recycle the heat of the exhaust gas of a micro gas turbine, and then the tail gas passing through the regenerator is exhausted to the atmosphere; however, the exhaust gas passing through the regenerator still has a certain amount of waste heat, and in the prior art, the energy of the exhaust gas discharged from the regenerator is also recycled, and generally, a rotating machine, such as a turbine, is used to recycle the energy of the exhaust gas. However, for a micro gas turbine with low power, the temperature of the tail gas discharged by the heat regenerator is relatively low, and the amount of the tail gas is small, so that the rotary machine cannot effectively recover the energy.

Meanwhile, solar thermal power generation mainly comprises groove type thermal power generation, linear Fresnel thermal power generation, tower type thermal power generation and disc type thermal power generation technologies. The principle is mainly that sunlight is gathered by using a light-gathering paraboloidal reflector, and steam or heating fluid is generated by a light-heat conversion and heat exchange device to drive a heat engine to generate electricity: the solar energy power generation technology has the advantages that the technology can absorb all-band sunlight and can realize continuous power generation day and night through heat storage and fuel supplement. However, most of the mirrors in the current solar power generation systems are fixedly installed, and sunlight is absorbed by the mirrors fixed at a certain fixed angle, which is the calculated optimal angle. However, since the reflector is fixed and the sun is rotated, there is a problem that the sun does not always directly irradiate the reflector, and when the sun obliquely irradiates the reflector, the reflected sunlight is less, so that the solar energy cannot be fully utilized, and energy is wasted. In the prior art, the gas turbine is fixed on the ground, cannot track sunlight, and is difficult to realize the efficient utilization of solar energy.

Further, a tesla turbine is a bladeless, fluid shear driven turbine, which is referred to as a bladeless turbine. Tesla turbines use boundary layer effects, where the fluid is influenced by viscous forces and forms a very thin boundary layer at the edge of the pipe wall or other object, where the velocity of a stationary surface is 0 and increases further from the surface. By using the effect, the fluid moving at high speed can drive a group of rotating discs to rotate. The mechanical efficiency of a tesla turbine can reach 95%, which is much higher than that of a conventional blade turbine. However, the pressure drop ratio of the existing tesla turbine is difficult to break through 2, namely, the gas compressor pressurizes gas, and high-pressure gas has large pressure loss after acting on the turbine, so when the tesla turbine is used in systems such as power generation or heating, the thermal efficiency is not high, and energy waste is caused.

In addition, in the power generation system, power generation can be performed by the solid oxide fuel cell, and heat recovery can be performed by the regenerator. The Solid Oxide Fuel Cell (SOFC for short) operates at high temperature (800-; the adaptability to fuel is strong, and the fuel can be operated under various fuel conditions; the all-solid-state component is used, so that the problems of liquid leakage and corrosion do not exist; can be freely built, and has flexible scale and installation place, etc. These features greatly improve the fuel power generation efficiency. Because the reaction contains partial gas phase fuel which is not completely reacted, the partial gas can be continuously combusted to generate heat, but is often used as waste gas to be evacuated or combusted, thereby causing energy waste and being not beneficial to environmental protection.

In the technical field of micro gas turbines, a heat regenerator is generally adopted in the prior art to recycle heat exhausted by the micro gas turbine, and then tail gas passing through the heat regenerator is exhausted to the atmosphere; however, the exhaust gas passing through the regenerator still has a certain amount of waste heat, and in the prior art, the energy of the exhaust gas discharged from the regenerator is also recycled, and generally, a rotating machine, such as a turbine, is used to recycle the energy of the exhaust gas. However, for a micro gas turbine with low power, the temperature of the tail gas discharged by the heat regenerator is relatively low, and the amount of the tail gas is small, so that the rotary machine cannot effectively recover the energy.

Therefore, how to improve the heat recycling and recovery efficiency in the power generation system to improve the power generation amount of the power generation system is a technical problem that needs to be solved urgently by those skilled in the art.

Disclosure of Invention

The technical solution problem of the utility model is that: overcome prior art's not enough, a miniature gas turbine combined cycle system with serial-type tesla turbine machine is provided, the energy that carries in the regenerator exhaust can further be recycled to this circulation system, and then improve whole miniature gas turbine's efficiency, and simultaneously, SOFC electricity generation waste heat and the recovery problem of regenerator exhaust waste heat can be solved simultaneously to this circulation system, the heat cyclic utilization of each link output in with the system, can improve entire system's electricity generation and recovery efficiency, but the integrated setting simultaneously, occupation space is little, in addition, this circulation system is through the pursuit to solar energy, accomplish the high-efficient use of solar energy, in order to improve system's generating efficiency, in addition this circulation system can solve current tesla turbine and fall to press than low, easily cause loss of pressure, the problem of system inefficiency.

The technical solution of the utility model is that: a micro gas turbine combined cycle system with a tandem tesla turbine, comprising a micro gas turbine with a tandem tesla turbine, the micro gas turbine combined cycle system with a tandem tesla turbine further comprising at least one of a fuel cell system, a steam power generation system, a solar receiver;

the micro gas turbine with the tandem type Tesla turbine comprises a starting integrated motor, an air compressor, a tandem type Tesla turbine and a heat regenerator, wherein the heat regenerator comprises a first inlet, a first outlet, a second inlet and a second outlet, the first inlet is connected with the outlet of the air compressor and used for heating compressed gas and outputting the compressed gas from the first outlet, and the second inlet and the second outlet are respectively connected with a medium outlet of a last stage Tesla turbine unit in the tandem type Tesla turbine and the outside atmosphere and used for cooling working gas flowing out of the tandem type Tesla turbine and then discharging the working gas out of the micro gas turbine with the tandem type Tesla turbine.

Further, the micro gas turbine with the tandem tesla turbine includes a regenerator and a tandem tesla turbine; the tandem Tesla turbine comprises at least two Tesla turbine units arranged on a rotating shaft and at least two radial bearings; the Tesla turbine unit comprises: the rotating shaft is arranged on a shell on the rotating shaft, and a medium inlet and a medium outlet are formed in the shell; the rotating shafts are arranged on the rotating shafts, the rotating shafts are fixedly connected with the rotating shafts, gaps are formed between every two adjacent rotating disks in the rotating shafts, and exhaust holes are uniformly distributed around the center on each rotating disk in the rotating shafts; the at least two radial bearings are arranged on the rotating shaft; the medium outlet of the upper stage tesla turbine unit communicates with the medium inlet of the lower stage tesla turbine unit.

Further, the fuel cell system comprises a fuel cell, a first outlet of the heat regenerator is connected with an inlet of the fuel cell for providing combustion gas for the fuel cell, and a tail gas outlet of the fuel cell is connected with an inlet of the tandem tesla turbine for providing working gas for the tandem tesla turbine.

Further, the steam power generation system is a steam turbine system;

the steam turbine system comprises a heat exchange unit, a circulating water tank, an engine and a first generator, wherein a first outlet of the heat regenerator is connected with an air inlet of the heat exchange unit, a water inlet of the heat exchange unit is connected with a water outlet of the circulating water tank, a steam outlet of the heat exchange unit is connected with the engine and used for providing acting steam for the engine, the engine is connected with the first generator and used for driving the first generator to generate electricity, and the circulating water tank is connected with the engine and used for recycling water or a water-vapor mixture converted after the acting steam acts.

Further, the steam power generation system is an organic Rankine cycle system;

the organic Rankine cycle system comprises a condenser, an evaporator, a second generator, a tandem Tesla turbine expander and a liquid pump, wherein a first outlet of the heat regenerator is connected with an air inlet of the evaporator, the condenser is connected with a water inlet of the evaporator through the liquid pump, a steam outlet of the evaporator is connected with the tandem Tesla turbine expander and used for providing working steam for the tandem Tesla turbine expander, the tandem Tesla turbine expander is connected with the second generator and used for driving the second generator to generate electricity, and the condenser is connected with the tandem Tesla turbine expander and used for recycling water or a water-vapor mixture converted after the working steam is applied.

Further, the solar receiver comprises a solar collecting device, a solar reflecting mirror, a mounting table and an adjusting device; the solar energy collecting device is arranged on the gas turbine and used for heating a circulating medium on a working medium channel of the gas turbine, and the gas turbine is fixed above the solar reflecting mirror and enables the solar energy collecting device to be located at a sunlight reflecting and gathering point.

Further, the fuel cell system further comprises an afterburner;

the tail gas outlet of the fuel cell is connected with the afterburner, and the gas outlet of the afterburner is connected with the gas inlet end of the air pressure impeller.

Further, the series Tesla turbine comprises a motor, and a rotating shaft of the motor is connected with the rotating shaft through a coupler; or,

the rotating shaft of the motor is the rotating shaft.

Further, the tandem tesla turbine includes a thrust bearing disposed within any one of the tesla turbine units.

Further, two radial bearings are respectively located at the front end of the first stage tesla turbine unit and the rear end of the last stage tesla turbine unit and are located outside the housing of the tesla turbine unit.

Compared with the prior art, the utility model the advantage lie in:

1. the utility model discloses a miniature gas turbine combined cycle system with serial-type tesla turbine uses piston engine to retrieve the thermal principle in the miniature gas turbine regenerator exhaust, can solve among the prior art because the waste gas calorific value is lower, the heat is less unable high-efficient technical problem of retrieving.

2. The utility model discloses a miniature gas turbine combined cycle system with serial-type Tesla turbine, it can solve SOFC power generation waste heat and regenerator exhaust waste heat's recovery problem simultaneously, recycles the heat of each link output in the system, and its recovery efficiency can reach 50% -80%; the steam power generation system in the triple combination system can be a steam turbine system or an ORC system (organic Rankine cycle system), and the universality is high.

3. The fuel cell needs to react at 900 ℃ -1000 ℃, which is exactly the temperature of the gas turbine combustor during working, therefore the utility model uses the fuel cell to replace the traditional gas turbine combustor. Meanwhile, the fuel cell can be used as an independent power generation device, can generate a large amount of heat, not only has the function of replacing a combustion chamber, but also can be used as one of power sources of a circulating system. The fuel cell and the gas turbine system are mutually promoted, and the combined working effect is greater than the effect of respective working superposition of the original systems.

4. The cold start of low temperature is one of the important factors that influence fuel cell commercialization and use, the utility model discloses arrange fuel cell in a whole set of circulation system, can make fuel cell give vent to anger just to start when the temperature reaches a suitable value at the regenerator, make fuel cell by make full use of, resources are saved, the availability factor is high, does benefit to the commercialization.

5. The utility model discloses a miniature gas turbine combined cycle system with serial-type tesla turbine can further retrieve heating element's in vehicle or the power generation system heat through steam power generation system's circulating water, for example engine housing, group battery, the heat that the generator gived off etc.

6. The utility model discloses a miniature gas turbine combined cycle system with serial-type tesla turbine combines solar energy, gas turbine and pursuit sunlight technique, can guarantee that solar energy gas turbine power generation system efficient absorbs solar energy to improve the utilization ratio of the energy.

7. The utility model discloses a miniature gas turbine combined cycle system with serial-type tesla turbine, through the cooperation of regenerator, combustion chamber, can utilize the heat cyclic utilization of each link output in the system, energy recuperation is efficient.

8. The utility model discloses an among the miniature gas turbine combined cycle system with serial-type tesla turbine, the falling pressure ratio is high, reduces the pressure drop loss, and the system is overall efficient.

9. The utility model discloses an among the miniature gas turbine combined cycle system with serial-type tesla turbine, the gas after the compression can obtain make full use of, but the energy saving.

10. The utility model discloses an among the miniature gas turbine combined cycle system with serial-type tesla turbine, the medium entry of each level tesla turbine unit sets up the nozzle, has increased the gas flow rate.

11. The utility model discloses an among the miniature gas turbine combined cycle system with serial-type tesla turbine, carousel both sides face sets up spiral air groove, realizes the quick through-flow of carousel both sides air, both can conduct gas, can prevent air blockage again, gather.

Drawings

FIG. 1 is a schematic diagram of the operation of a first combined cycle system of the micro gas turbine combined cycle system with tandem Tesla turbines of the present invention;

FIG. 2 is a schematic diagram of the second combined cycle system of the micro gas turbine combined cycle system with tandem Tesla turbines of the present invention;

FIG. 3 is a schematic representation of the operation of a third combined cycle system of the micro gas turbine combined cycle system with tandem Tesla turbines of the present invention;

FIG. 4 is a schematic diagram illustrating the operation of a fourth combined cycle system of the micro gas turbine combined cycle system with tandem Tesla turbines according to the present invention;

FIG. 5 is a schematic diagram of a tandem Tesla turbine in a micro gas turbine combined cycle system with tandem Tesla turbines according to the present invention;

FIG. 6 is a schematic diagram of a first stage Tesla turbine unit of the tandem Tesla turbine in a micro gas turbine combined cycle system with tandem Tesla turbines according to the present invention;

FIG. 7 is a schematic illustration of the turbine inlet and outlet path in the top view of FIG. 5;

fig. 8 is a schematic diagram of the air slots provided on the rotating disk of the tandem tesla turbine in the micro gas turbine combined cycle system with the tandem tesla turbine according to the present invention.

FIG. 9 is a schematic diagram of an engine configuration in a micro gas turbine combined cycle system with tandem Tesla turbines according to the present invention;

FIG. 10 is a schematic diagram of an engine configuration of a micro gas turbine combined cycle system with tandem Tesla turbines according to the present invention;

FIG. 11 is a schematic diagram of an engine configuration of a micro gas turbine combined cycle system with tandem Tesla turbines according to the present invention;

FIG. 12 is a schematic diagram of an engine configuration in a micro gas turbine combined cycle system with tandem Tesla turbines according to the present invention;

FIG. 13 is a schematic diagram of an engine configuration in a micro gas turbine combined cycle system with tandem Tesla turbines according to the present invention;

FIG. 14 is a six schematic diagram of an engine configuration in a micro gas turbine combined cycle system with tandem Tesla turbines according to the present invention;

figure 15 is a schematic view of the vacuum pump of figure 11 according to the present invention;

figure 16 is a schematic view of the vacuum pump of figure 14 according to the present invention;

FIG. 17 is a schematic view of a regulator in a micro gas turbine combined cycle system with tandem Tesla turbines according to the present invention;

fig. 18 is a schematic diagram of the top expansion bottle distribution of the mounting plate in a micro gas turbine combined cycle system with tandem tesla turbines according to the present invention.

Detailed Description

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

A micro gas turbine combined cycle system with a tandem Tesla turbine includes a micro gas turbine 1 with a tandem Tesla turbine, and further includes at least one of a fuel cell system, a steam power generation system, and a solar receiver.

When the air compressor 102 is started, the air compressor is driven by the starting integrated motor 103. The starting integrated motor 103 is firstly used as a motor to drive the air compressor 102 to rotate, and is used as a generator to generate electricity after being accelerated to be capable of operating independently.

The micro gas turbine 1 with the tandem type Tesla turbine comprises a heat regenerator 101, an air compressor 102, a tandem type Tesla turbine 100 and a starting integrated motor 103, wherein the heat regenerator 101 comprises a first inlet, a first outlet, a second inlet and a second outlet, the first inlet is communicated with the outlet of the air compressor 102 so as to heat gas compressed by the air compressor 102 and output the gas from the first outlet, the output is divided into two paths, one path is introduced into the fuel cell 201, the temperature of the gas entering the fuel cell 201 is improved, and the utilization rate of the fuel is further improved; the other path is led into a heat exchange unit 302 in the steam power generation system to convert the water in the circulating water tank 301 into steam. The second inlet and the second outlet of the regenerator 101 are respectively communicated with the outlet of the tandem tesla turbine 100 and the external atmosphere, so that the high-temperature gas flowing out of the turbine 104 is discharged as an exhaust gas to the outside of the micro gas turbine 1 having the tandem tesla turbine after being reduced in temperature.

The micro gas turbine 100 of the tandem tesla turbine includes at least two tesla turbine units disposed on a rotating shaft and at least two radial bearings 130; the Tesla turbine unit comprises: a rotating shaft 110, a housing 120 disposed on the rotating shaft 110, the housing 120 having a medium inlet 170 and a medium outlet 180; a plurality of turntables 191 arranged in the housing 120, the plurality of turntables 191 are fixedly connected to the rotating shaft 110, a gap is arranged between every two adjacent turntables 191 in the plurality of turntables 191, and exhaust holes 192 are uniformly distributed around the center on each turntable 191 in the plurality of turntables 191; the at least two radial bearings 130 are disposed on the rotating shaft 110; the media outlet 180 of the previous stage tesla turbine unit communicates with the media inlet 170 of the next stage tesla turbine unit.

The utility model discloses a serial-type tesla turbine's theory of operation as follows: the high velocity fluid media enters the interior of the first stage tesla turbine housing 120 through the media inlet 170 provided in the housing 120 and into the gap between adjacent rotor discs 191. Due to the fluid boundary effect, the fluid medium drives the rotating disk 191 to rotate at high speed, thereby driving the rotating shaft 110 to rotate. The fluid medium passes through the exhaust holes 192 of each of the rotating disks 191 in turn and finally exits the housing 120 through the medium outlet 180 provided in the housing 120, passing through the conduit into the medium inlet 170 … … of the next stage tesla turbine unit until exiting from the medium outlet 180 of the last stage tesla turbine unit.

Preferably, the housings 120 of the various stages of tesla turbine units are fixed together; the media outlet 180 of the previous stage tesla turbine unit is connected by piping to the media inlet 170 of the next stage tesla turbine unit.

Preferably, the media inlet 170 of each stage of tesla turbine units is provided with a nozzle to increase the gas flow rate.

Preferably, the connection position of the rotating shaft 110 and the housing 120 is sealed, so as to prevent the working medium from leaking. The outside of serial-type tesla turbine sets up the safety cover, and the safety cover can be soaked in water tank or pond and cool down.

Preferably, the rotating shaft 110 is supported in a stator (not shown) by at least one pair of radial bearings 130.

Preferably, the turntable 191 is a circular disk.

Preferably, a rotating shaft of the heuristic integrated motor 103 is connected with the rotating shaft 110 through a coupling 140; alternatively, the rotating shaft of the initiation integral motor 103 is the rotating shaft 110, that is, the rotating shaft of the initiation integral motor 103 is coaxial with the rotating shaft 110 of the tandem tesla turbine.

Preferably, the tandem tesla turbine includes a thrust bearing 150, the thrust bearing 150 is disposed in any one tesla turbine unit, the thrust bearing 150 includes a thrust disk 160 and a stator, and the thrust disk 160 is disposed on the rotating shaft 110; the thrust bearing 150 is a bearing for restricting the movement of the rotating shaft 110 in the axial direction, and the radial bearing 130 is a bearing for restricting the movement of the rotating shaft in the radial direction.

It is further preferred that the at least two radial bearings 130 and/or the thrust bearing 150 are non-contact bearings, such as air bearings, magnetic bearings, gas-magnetic hybrid bearings, etc.

Preferably, two radial bearings 130 are located at the front end of the first stage tesla turbine unit and the rear end of the last stage tesla turbine unit, respectively, and are located outside the housing 120 of the tesla turbine unit.

Preferably, the air discharge holes 192 on each disk 191 are coaxially arranged.

Preferably, the rotary plate 191 is fixed to the rotary shaft 110 by a key connection or the like.

Preferably, a spacer 193 is disposed between two adjacent rotating discs 191, and the spacer 193 is used for adjusting the size of the gap between two adjacent rotating discs 191.

Preferably, the turntable 191 is made of steel or carbon fiber material or high-temperature resistant epoxy resin.

Preferably, spiral air grooves 194 are formed in two side faces of the rotary plate 191 to achieve rapid through flow of air on two sides of the rotary plate 191, so that air can be conducted, and air blockage and accumulation can be prevented.

Further preferably, the air grooves 194 may be formed by forging, rolling, etching, or stamping.

Preferably, the number of discs 191 in each stage of the tesla turbine unit may be equal or individually equal or unequal.

The utility model discloses a serial-type tesla turbine accessible increases the quantity increase airflow of carousel 191, through increasing the progression increase pressure ratio.

Assuming that the gas pressure at the working medium inlet is 20 times of atmospheric pressure, and the gas pressure can be reduced by 2 times by each stage of Tesla turbine unit, the discharge pressure can be close to the atmospheric pressure by 4-5 stages of Tesla turbine units, and the pressure drop loss is very small.

The fuel cell system 2 includes a fuel cell 201. The outlet of the heat regenerator 101 is connected to the fuel cell 201 to provide high-temperature gas required for combustion for the fuel cell 201, the output end of the fuel cell 201 outputs electric energy, the generated high-temperature and high-pressure tail gas pushes the series tesla turbine 100 to do work, and the series tesla turbine 100 drives the integrated motor 103 to rotate at a high speed to generate power.

The steam power generation system: the steam turbine system 3 is selected and comprises a heat exchange unit 302, a circulating water tank 301, an engine 303 and a first generator 304, a part of gas discharged by the heat regenerator 101 is conveyed to the heat exchange unit 302, meanwhile, circulating water is conveyed to the heat exchange unit 302 by the circulating water tank 301, in the heat exchange unit 302, the circulating water absorbs heat in tail gas and is gasified in the heat exchange unit 302 to form high-pressure steam, and the high-pressure steam enters the engine 303 to do work to drive the first generator 304 to generate electricity. The high-pressure steam becomes normal-pressure steam or a water-steam mixture after acting, and enters the circulating water tank 301, so that the cyclic utilization is realized. Thereby effectively utilizing the heat in the exhaust of the heat regenerator 101 and improving the overall efficiency of the circulation system.

Preferably, solar energy is introduced into the working medium channel from the regenerator 101 to the combustion chamber 105, a solar energy collecting device 21 can be arranged on the regenerator 101 or the combustion chamber 105, and the solar energy collecting device 21 is located at the sunlight reflecting convergence point.

In this case, the cycle process of the combined cycle system is as follows:

1. the starting integrated motor 103 is firstly used as a motor to drive the air compressor 102 to work, external air is introduced into the air compressor 102, the external air is introduced into the heat regenerator 101 from the first inlet of the heat regenerator 101 after being compressed, and the temperature of the air flowing out of the air compressor 102 is 500-600 ℃.

2. The gas flowing out from the first outlet of the heat regenerator 101 is divided into two paths, one path enters the heat exchange unit 302 of the turbine system 3, and the other path enters the fuel cell system 2, and the two paths promote the reaction start and maintenance of the fuel cell 201 together with the fuel gas:

1) a part of gas discharged from the first outlet of the heat regenerator 101 is delivered to the heat exchange unit 302, meanwhile, the circulating water tank 301 delivers circulating water to the heat exchange unit 302, in the heat exchange unit 302, the circulating water absorbs heat in the tail gas and is gasified in the heat exchange unit 302 to form high-pressure steam, and the high-pressure steam enters the engine 303 to do work to drive the first generator 304 to generate electricity. The high-pressure steam becomes normal-pressure steam or a water-steam mixture after acting, and enters the circulating water tank 301, so that the cyclic utilization is realized.

2) After the fuel cell 201 is started, heat is gradually generated and a small part of electric energy is generated, the generated tail gas is introduced into the series-type tesla turbine 100, one path of the tail gas enables the series-type tesla turbine 100 to rotate at a high speed and drives the starting integrated motor 103 converted into the generator to generate electricity, the other path of the high-temperature gas is introduced into the heat regenerator 101 from the second inlet of the heat regenerator 101, and the cycle is repeated until the fuel cell 201 stably reacts at the optimal temperature. In this step, the fuel cell 201 generates heat after being started, and gradually increases to the optimal reaction temperature, and the reaction is stabilized at 950 ℃ (preferably 900 ℃), and the electric energy is stably output; the generated tail gas is introduced into the tandem tesla turbine 100 for repeated circulation, and the temperature of the gas outlet end of the tandem tesla turbine 100 reaches 550-700 ℃ (preferably 650 ℃); the temperature in regenerator 101 is maintained at 500-600 ℃.

The steam power generation system in the gas turbine, fuel cell and steam power generation triple combined cycle system provided by the embodiment adopts a steam turbine system, the triple combined system can simultaneously solve the recovery problem of SOFC power generation waste heat and regenerator exhaust waste heat, the heat produced in each link in the system is recycled, and the recovery efficiency can reach 50% -80%.

Preferably, the afterburner 202 can be connected behind the fuel cell 201 to prevent insufficient combustion, the fuel cell 201 outputs electric energy, and part of incompletely reacted gas is conveyed to the afterburner 202, after combustion reaction is generated in the afterburner 202, tail gas is conveyed from an outlet of the afterburner 202 to an air inlet end of the tandem tesla turbine 100, one path of tail gas enables the tandem tesla turbine 100 to rotate at a high speed and drives the starting integrated motor 103 converted into a generator to generate power, and the other path of high-temperature gas is introduced into the heat regenerator 101 from a second inlet of the heat regenerator 101 to be repeatedly circulated.

Further, the afterburner 202 adopts an existing afterburning device, such as an afterburning furnace and the like.

In this case, the cycle process of the combined cycle system is as follows:

2) After the fuel cell 201 is started, heat is gradually generated and a small part of electric energy is generated, tail gas generated by the fuel cell is introduced into the afterburner 202, gas exhausted from the afterburner 202 is introduced into the series-connection tesla turbine 100, one path of the gas enables the series-connection tesla turbine 100 to rotate at a high speed and drives the starting integrated motor 103 converted into a generator to generate electricity, the other path of high-temperature gas is introduced into the heat regenerator 101 from a second inlet of the heat regenerator 101, and the cycle is repeated until the fuel cell 201 stably reacts at the optimal temperature. In this step, the fuel cell 201 generates heat after being started, and gradually increases to the optimal reaction temperature, and the reaction is stabilized at 950 ℃ (preferably 900 ℃), and the electric energy is stably output; the generated tail gas is introduced into the tandem tesla turbine 100 for repeated circulation, and the temperature of the gas outlet end of the tandem tesla turbine 100 reaches 550-700 ℃ (preferably 650 ℃); the temperature in regenerator 101 is maintained at 500-600 ℃.

In the embodiment, the supplementary burner 202 is added to ensure the sufficient combustion of the fuel and improve the energy recovery rate.

Further, the engine 303 may be a piston engine. The structure of the piston engine can be realized by various structures, such as, but not limited to, the following structures.

The structure I is as follows:

in this configuration, the engine 303 employs a single-side intake spring return piston engine 310. As shown in fig. 3, the heat exchanger comprises a cylinder body 311, a piston 312, a spring 313, a piston rod 314, a slider-crank mechanism 315 and an output shaft 316, wherein the piston 312 is installed in the cylinder body 311, one end of the piston rod 314 is connected with the piston 312, the other end of the piston rod 314 extends out of the cylinder body 311 and is connected with the slider-crank mechanism 315, the slider-crank mechanism 315 is connected with the output shaft 316, one side of a rodless cavity of the cylinder body 311 is provided with a first air inlet 311-1 and a first air outlet 311-2, the first air inlet 311-1 is connected with a heat exchange unit 302, the first air outlet 311-2 is connected with a circulating water tank 301, and the output shaft 316 is connected with a first generator 304; one side of the rod cavity of the cylinder body 311 is provided with a spring 313 for resetting the piston 312 after doing work.

Preferably, an on-off valve 321 is provided between the first intake port 311-1, the first exhaust port 311-2, and the cylinder block 311, and the on-off valve 321 is controlled according to the specific operating state of the piston engine to control the operation of the piston engine.

Specifically, the on-off valve 321 may be a mechanical on-off valve or an electric on-off valve. The electric switch valve is simple in principle, only needs to be switched on and off at high frequency, but can bear higher temperature and pressure; the mechanical switch valve needs to be linked with the movement of the piston, so that the frequency limitation of program control is omitted, but the structure is slightly complicated.

In a working state, high-pressure steam enters a rodless cavity of the piston engine from the heat exchange unit 302 through the first air inlet 311-1 to push the piston 312 to do linear motion, the piston 312 converts the linear motion of the piston 312 into rotary motion of the output shaft 316 through the crank connecting rod mechanism 315, and the output shaft 316 drives the first generator 304 to generate electricity; after doing work, the spring 313 pushes the piston 312 to reset, and exhaust gas or steam-water mixture in a rodless cavity of the piston engine enters the circulating water tank 301 through the first exhaust port 311-2 for recycling.

The structure II is as follows:

in this configuration, the engine 303 is a double-side intake piston engine 320. On the basis of the first structure, the spring 313 is omitted, a second air inlet 311-3, a second air outlet 311-4 are arranged on one side of a rod cavity of the cylinder body 311, the second air inlet 311-3 is connected with the heat exchange unit 302, the second air outlet 311-4 is connected with the circulating water tank 301, and other structures are the same as the first structure, and repeated description and marking are omitted.

In a working state, high-pressure steam enters a rodless cavity of the piston engine from the heat exchange unit 302 through the first air inlet 311-1 to push the piston 312 to do linear motion, the piston 312 converts the linear motion of the piston 312 into rotary motion of the output shaft 316 through the crank connecting rod mechanism 315, and the output shaft 316 drives the first generator 304; after doing work, high-pressure steam enters a rod cavity of the piston engine through a second air inlet 311-3 to push the piston 312 to move towards one side of the rodless cavity, exhaust gas or steam-water mixture in the rodless cavity of the piston engine enters the circulating water tank 301 through a first air outlet 311-2 and then enters the next cycle, the high-pressure steam enters the rodless cavity of the piston engine through a first air inlet 311-1 to push the piston 312 to do work, and the exhaust gas or steam-water mixture in the rod cavity of the piston engine enters the circulating water tank 301 through a second air outlet 311-4 to circulate.

Preferably, switch valves 321 are arranged between the first air inlet 311-1, the first exhaust port 311-2, the second air inlet 311-3, the second exhaust port 311-4 and the cylinder body 311, and the on-off of the switch valves 321 is controlled according to the specific working state of the piston engine, so as to realize the control of the reciprocating motion of the piston engine; the on-off valve 321 may be a mechanical on-off valve or an electric on-off valve.

Compared with the first structure, the structure omits a spring, realizes the reciprocating motion of the piston through air inlet and exhaust at two sides, improves the reliability of piston engine control, and simplifies the structure.

The structure is three:

in this configuration, the engine 303 employs a horizontally opposed two-cylinder controlled piston engine 330. The double cylinder controlled piston engine 330 includes a crank block mechanism 335 and a first cylinder and a second cylinder disposed opposite to each other on both sides of the crank block mechanism 335.

The crank-slider mechanism 335 is a double-slider structure, and includes a crank 335-1, a first slider 335-2, a first connecting rod 335-3, a second slider 335-4, a second connecting rod 335-5, and an output shaft 316; the output shaft 316 penetrates through the center of the crank 335-1, one end of the first connecting rod 335-3 and one end of the second connecting rod 335-5 are respectively connected to two end faces of the crank 335-1, the connecting points are distributed on two sides of the output shaft 316, the other end of the first connecting rod 335-3 is connected to the first slider 335-2, and the other end of the second connecting rod 335-5 is connected to the second slider 335-4.

The first cylinder includes: the first piston 332 is arranged in the first cylinder body 331, one end of the first piston rod 334 is connected with the first piston 332, and the other end of the first piston rod 334 extends out of the first cylinder body 331 and is connected with a first sliding block 335-2; a first air inlet 311-1 and a first air outlet 311-2 are arranged on one side of a rodless cavity of the first cylinder body 331, the first air inlet 311-1 is connected with the heat exchange unit 302, and the first air outlet 311-2 is connected with the circulating water tank 301.

The second cylinder includes: the second cylinder body 337, the second piston 338, the second piston rod 339 and the second piston rod 339 are arranged in the second cylinder body 337, one end of the second piston rod 338 is connected with the second piston 338, and the other end of the second piston rod 338 extends out of the second cylinder body 337 and is connected with the second sliding block 335-4; and a second air inlet 311-3 and a second air outlet 311-4 are arranged on one side of the rod cavity of the second cylinder body 337, the second air inlet 311-3 is connected with the heat exchange unit 302, and the second air outlet 311-4 is connected with the circulating water tank 301.

In a working state, high-pressure steam enters a rodless cavity of a first cylinder from the heat exchange unit 302 through a first air inlet 311-1 to push a first piston 332 to do linear motion, the first piston 332 converts the linear motion of the first piston 332 into rotary motion of an output shaft 316 through a crank connecting rod mechanism 335, and the output shaft 316 drives a first generator 304; after doing work, high-pressure steam enters a rod cavity of the second cylinder through the second air inlet 311-3 to push the second piston 338 to move towards one side of the rodless cavity, exhaust gas or steam-water mixture in the rodless cavity of the first cylinder enters the circulating water tank 301 through the first air outlet 311-2, and after doing work, the high-pressure steam enters the first cylinder again to continue doing work and repeatedly circulate to realize continuous work of the output shaft 316.

In the structure shown in the figure, when high-pressure steam enters the first cylinder to do work, the first piston rod 334 drives the crank 335-1 of the crank slider mechanism 335 to rotate, the crank 335-1 rotates in the counterclockwise direction, in the process, the crank 335-1 simultaneously drives the second piston rod 339 to move, the second piston rod 339 drives the second piston 338 to move towards one side of the crank 335-1, when the high-pressure steam enters the second cylinder to do work after rotating to a preset angle, the second piston 338 drives the second piston rod 339 to move towards the side far away from the crank 335-1, the crank 335-1 continues to rotate in the counterclockwise direction, and at the moment, exhaust gas or steam-water mixture in the rodless cavity of the first cylinder enters the circulating water tank 301 through the first exhaust port 311-2. In the continuous working process, when the first cylinder enters air to work, the second cylinder exhausts air, and when the second cylinder enters air to work, the first cylinder exhausts air, so that the circular working is realized.

Of course, the above description is only an illustration of a specific working process, and does not limit the implementation process and the structure of the present invention.

Preferably, the switch valve 321 is arranged between the first air inlet 311-1, the first exhaust port 311-2, the second air inlet 311-3, the second exhaust port 311-4 and the cylinder, and the on-off of the switch valve 321 is controlled according to the specific working state of the piston engine, so as to realize the control of the reciprocating motion of the piston engine. Specifically, the on-off valve 321 may be a mechanical on-off valve or an electric on-off valve.

Preferably, the heat exchange unit 302 is connected with the first air inlet 311-1 and the second air inlet 311-3 through electromagnetic directional valves, the first exhaust port 311-2 and the second exhaust port 311-4 are connected with the circulating water tank 301 through electromagnetic directional valves, and the actions of the first cylinder and the second cylinder can be controlled through the action control of the electromagnetic directional valves, so that the control of the piston engine is simpler and more accurate.

In the three structures disclosed in the first, second and third structures, the specific structure of the engine 303 is that the cylinder drives the crank connecting rod, that is, the linear reciprocating motion of the piston is converted into the rotational motion of the crank, and then the first generator 304 is driven; in addition to above-mentioned structure, the utility model discloses also can use linear electric motor, first generator 304 is linear electric generator promptly, with piston rod lug connection to linear electric motor, the linear motion direct drive linear electric motor electricity generation of piston. This further simplifies the overall structure. In the case where the use scene thereof is limited and is not suitable for the above three structures, the following structures may be used. The specific structural principle is as follows:

the structure is four:

in the present structure, the engine 303 is a one-side intake spring return piston engine 310, and includes:

a cylinder body 311, a piston 312, a spring 313 and a piston rod 314;

the piston 312 is installed in the cylinder body 311, one end of the piston rod 314 is connected with the piston 312, and the other end of the piston rod extends out of the cylinder body 311 and is connected with the first generator 304;

a first air inlet 311-1 and a first exhaust port 311-2 are arranged on one side of a rodless cavity of the cylinder body 311, the first air inlet 311-1 is connected with the heat exchange unit 302, the first exhaust port 311-2 is connected with the circulating water tank 301, and a spring 313 is arranged on one side of the rod cavity of the cylinder body 311 and used for resetting the piston 312 after acting.

The structure is five:

in the present configuration, the engine 303 is a double-side intake piston engine 320, including:

a cylinder body 311, a piston 312, a piston rod 314;

a first air inlet 311-1 and a first exhaust port 311-2 are arranged on one side of a rodless cavity of the cylinder body 311, a second air inlet 311-3 and a second exhaust port 311-4 are arranged on one side of a rod cavity of the cylinder body 311, the first air inlet 311-1 and the second air inlet 311-3 are connected with the heat exchange unit 302, and the first exhaust port 311-2 and the second exhaust port 311-4 are connected with the circulating water tank 301.

The structure is six:

in the present configuration, the engine 303 is a horizontally opposed two-cylinder controlled piston engine 330 including:

a first cylinder, a second cylinder;

the first cylinder comprises a first cylinder body 331, a first piston 332 and a first piston rod 334, the first piston 332 is installed in the first cylinder body 331, one end of the first piston rod 334 is connected with the first piston 332, and the other end of the first piston rod extends out of the first cylinder body 331 and is connected with one end of the first generator 304; a first air inlet 311-1 and a first air outlet 311-2 are arranged on one side of a rodless cavity of the first cylinder body, the first air inlet 311-1 is connected with the heat exchange unit 302, and the first air outlet 311-2 is connected with the circulating water tank 301;

the second cylinder comprises a second cylinder body 337, a second piston 338, a second piston rod 339, and the second piston rod 339 is installed in the second cylinder body 337, one end of the second piston rod 339 is connected with the second piston 338, and the other end extends out of the second cylinder body 337 and is connected with the other end of the first generator 304; and a second air inlet 311-3 and a second air outlet 311-4 are arranged on one side of the rod cavity of the second cylinder body 337, the second air inlet 311-3 is connected with the heat exchange unit 302, and the second air outlet 311-4 is connected with the circulating water tank 301.

According to the technology disclosed by the structure, the specific selection of the structure of the power generation device can be optimized according to the working conditions and the use scenes.

In the structure in above-mentioned 6, all set up single group's piston engine and driven power generation facility's work, the utility model discloses can set up multiunit piston engine equally and drive power generation facility work. The piston engines are arranged into a plurality of groups, the plurality of groups of engines simultaneously and correspondingly drive a plurality of groups of cranks to rotate, the plurality of groups of cranks are arranged on the same output shaft, and the output shaft is connected with the engine. Therefore, the operation reliability of the power generation device can be improved, and the power generation efficiency is improved.

Optionally, a first vacuum pump P1 and a second vacuum pump P2 are connected to the rod chamber of the first cylinder and the rodless chamber of the second cylinder. When the first cylinder or the second cylinder does work, the corresponding vacuum pump also starts to work at the same time, and the corresponding chamber is pumped to a negative pressure state.

Because the water vapor is adopted to perform piston expansion work, after the back pressure is reduced, namely the exhaust pressure is reduced by adopting a vacuumizing method, more liquid water is condensed out from the water vapor of the work-applying part, so that more work-applying energy is generated, and the power generation efficiency of the whole machine is improved. For example, when the pressure in the rod cavity of the first cylinder is normal pressure, the pressure after the steam in the rodless cavity of the first cylinder performs work is 0.1MPa, and after the pressure in the rod cavity of the first cylinder is pumped to 0.005MPa by a vacuum pump, under two different backpressure conditions, under the isentropic condition, the water steam releases more energy compared with the normal pressure backpressure at the backpressure of 0.005MPa, so that the overall work efficiency is improved by 5-8%.

Furthermore, because the utility model discloses well use the circulating water to absorb regenerator exhaust used heat, then promote the piston doing work, consequently at the piston doing work in-process, do not need between piston and the cylinder body to add lubricating oil and lubricating grease, directly by water lubrication can, consequently do not need extra lubricating structure and lubricating oil to supply with structure and system, simplified piston engine's structure.

Preferably, the steam turbine system 3 of the steam power generation system is replaced by an ORC system 4 (i.e. an organic rankine cycle system):

the ORC system 4, (i.e. the organic rankine cycle system), comprises a condenser 401, an evaporator 402, a second generator 403, a turboexpander 404, and a liquid pump 405. The first outlet exhaust gas of the regenerator 101 of the micro gas turbine 1 with the tandem tesla turbine is delivered to the fuel cell 201 by one path, and the other path is delivered to the evaporator 402, meanwhile, the condenser 401 delivers the condensed water to the evaporator 402 by the liquid pump 405, in the evaporator 402, the condensed water absorbs the heat in the tail gas and is gasified in the evaporator 402 to form high-pressure steam, and the high-pressure steam drives the second generator 403 to generate electricity by passing through the turbo expander 404. The high-pressure steam works to become normal-pressure steam or a water-steam mixture and enters the condenser 401 to realize recycling. Thereby effectively utilizing the heat in the exhaust of the regenerator 101 and improving the overall efficiency of the cycle.

In this case, the cycle process of the combined cycle system is as follows:

2. The gas flowing out of the first outlet of the heat regenerator 101 is divided into two paths, one path enters the evaporator 402 of the ORC system 4, and the other path enters the fuel cell system 2, and the two paths promote the reaction start and maintenance of the fuel cell 201 together with the fuel gas:

1) a portion of the gas discharged from the first outlet of the regenerator 101 is delivered to the evaporator 402, and the condenser 401 delivers the condensed water to the evaporator 402 by the liquid pump 405, wherein the condensed water absorbs the heat in the exhaust gas and is gasified in the evaporator 402 to form high-pressure steam, and the high-pressure steam passes through the turbo expander 404 to drive the second generator 403 to generate power. The high-pressure steam works to become normal-pressure steam or a water-steam mixture and enters the condenser 401 to realize recycling.

Preferably, the steam power generation system selects an ORC system, the recovery problem of the SOFC power generation waste heat and the exhaust waste heat of the heat regenerator can be solved, the heat generated in each link in the system is recycled, and the recovery efficiency can reach 50% -80%.

Preferably, the afterburner 202 can be connected behind the fuel cell 201 to prevent insufficient combustion, the fuel cell 201 outputs electric energy, and part of incompletely reacted gas is delivered to the afterburner 202, after combustion reaction is generated in the afterburner 202, the gas is delivered from the outlet of the afterburner 202 to the gas inlet end of the tandem tesla turbine 100, one path of gas causes the tandem tesla turbine 100 to rotate at high speed and drives the starting integrated motor 103 converted into the generator to generate power, and the other path of high-temperature gas is introduced into the regenerator 101 from the second inlet of the regenerator 101 to be circulated repeatedly.

In this case, the cycle process of the combined cycle system is as follows:

1. the starting integrated motor 103 is firstly used as a motor to drive the air compressor 102 to work, external air is introduced into the air compressor 102, the compressed air is introduced into the heat regenerator 101 from the first inlet of the heat regenerator 101, and the temperature of the air flowing out of the air compressor 102 is 500-600 ℃.

2. The gas flowing out from the first outlet of the heat regenerator 101 is divided into two paths, one path enters the evaporator 402 of the ORC system 4, and the other path enters the fuel cell system 2, and the two paths promote the reaction start and maintenance of the fuel cell 201 together with the fuel gas:

2) After the fuel cell 201 is started, heat is gradually generated and a small part of electric energy is generated, tail gas generated by the fuel cell is introduced into the afterburner 202, gas exhausted from the afterburner 202 is introduced into the series-connection tesla turbine 100, one path of the gas enables the series-connection tesla turbine 100 to rotate at a high speed and drives the starting integrated motor 103 converted into a generator to generate electricity, the other path of the gas with high temperature is introduced into the heat regenerator 101, and the cycle is repeated until the fuel cell 201 stably reacts at the optimal temperature. In this step, the fuel cell 201 generates heat after being started, and gradually increases to the optimal reaction temperature, and the reaction is stabilized at 950 ℃ (preferably 900 ℃), and the electric energy is stably output; the generated tail gas is introduced into the tandem tesla turbine 100 for repeated circulation, and the temperature of the gas outlet end of the tandem tesla turbine 100 reaches 550-700 ℃ (preferably 650 ℃); the temperature in regenerator 101 is maintained at 500-600 ℃.

By adding the afterburner 202, the fuel can be fully combusted, and the energy recovery rate is improved.

Because the required flow of fuel cell 201 is less, and the flow that air compressor machine 102 can export is great, consequently can select for use radial-flow turbine as the utility model discloses an air compressor machine 102.

Preferably, the fuel cell 201 is a solid fuel cell (e.g., a carbonate fuel cell) or a proton exchange membrane fuel cell.

Preferably, the micro gas turbine 1 with the tandem tesla turbine is fixed above the solar reflecting mirror 61 by a fixing rod 6, and the solar collecting device 65 is located at the sunlight reflecting convergence point. Specifically, the solar energy collecting device 65 is an absorber plate disposed on the gas turbine, and the absorber plate may be coated on the outer wall of the regenerator 101 or the combustion chamber 105, or may be a part of or the entire outer wall of the regenerator 101 or the combustion chamber 105.

Preferably, the solar reflector 61 is a reflector with a fixed focus, and particularly, a dish type solar reflector is selected.

Preferably, the mounting platform 62 is a flat plate, optionally made of steel, that is fixed to or embedded in the ground.

Preferably, the adjusting device 64 specifically includes a top bar 631, a sleeve bar 632, a hinge 633, a base 634, an expansion bottle 635, and a conduit 636.

A plurality of pedestals 634 are fixed on the top of the mounting table 62, an even number of the pedestals 634 are symmetrically arranged in pairs and distributed along a circumference (preferably, the pedestals 634 are uniformly distributed along the circumference), the pedestals 634 are connected with the bottom of the solar reflector 61 through telescopic rods, each telescopic rod comprises a top rod 631 and a sleeve rod 632, the top rod 631 can slide in the sleeve rod 632, the bottom of the sleeve rod 632 is arranged on the pedestal 634 through a hinge 633, the bottom of the top rod 631 is sleeved in the sleeve rod 632, and the top is connected with the bottom of the solar reflector 61 (preferably, the top rods 631 are uniformly distributed along a circumference at the bottom of the solar reflector 61); an expansion bottle 635 is fixed on the top surface of the mounting table 62 on the outer side of each base 634, expansion liquid (optional expansion kerosene) is filled in the expansion bottle 635, the expansion bottle 635 is connected to a sleeve rod 632 on the base 634 on the opposite side through a pipeline 636, when the expansion bottle 635 is heated, the expansion oil expands to jack the ejector rod 631 on the opposite side, and then the solar reflector 61 is lifted on the opposite side so as to absorb light on the side with strong illumination.

Further, when the sunlight is just vertically emitted to the ground, the expansion bottles 635 are heated to the same degree, and the axis of the solar reflector 61 is vertical to the ground at this moment. Each expansion bottle 635 may be nested within a bottle mount 637, securing the bottle mount 637 to the mounting block 62.

Preferably, in the structure of the adjusting device 64, if the strong light is located at the left side, the length of the telescopic rod at the right side is longer than that at the left side, and the right side of the solar reflector 61 is higher than that at the left side, so as to receive stronger illumination at the left side; otherwise, the right side can receive stronger illumination. Therefore, the power generation system of the present embodiment can automatically track the sunlight by the adjusting device 64, so as to ensure that the solar reflector 61 always receives the side with strong illumination.

Preferably, the telescopic rods are arranged in three pairs, and the solar reflecting mirror 61 can be adjusted from three angles. The telescopic rods can also be arranged into an integral pair such as one pair, two pairs, four pairs, five pairs … … and the like. The more the telescopic rod is arranged, the more precisely the angle of the solar reflecting mirror 61 can be adjusted.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A micro gas turbine combined cycle system having a tandem tesla turbine, comprising a micro gas turbine having a tandem tesla turbine, the micro gas turbine combined cycle system having a tandem tesla turbine further comprising at least one of a fuel cell system, a steam power generation system, a solar receiver;

2. The micro gas turbine combined cycle system with the in-line tesla turbine as claimed in claim 1, wherein the in-line tesla turbine comprises at least two tesla turbine units and at least two radial bearings disposed on a rotating shaft; the Tesla turbine unit comprises: the shell is arranged on the rotating shaft, and a medium inlet and a medium outlet are formed in the shell; the rotating shafts are arranged on the rotating shafts, the rotating shafts are fixedly connected with the rotating shafts, gaps are formed between every two adjacent rotating disks in the rotating shafts, and exhaust holes are uniformly distributed around the center on each rotating disk in the rotating shafts; the at least two radial bearings are arranged on the rotating shaft; the medium outlet of the upper stage tesla turbine unit communicates with the medium inlet of the lower stage tesla turbine unit.

3. The micro gas turbine combined cycle system with the tandem tesla turbine as claimed in claim 1, wherein the fuel cell system comprises a fuel cell, the first outlet of the regenerator is connected to the fuel cell inlet for providing combustion gas to the fuel cell, and the fuel cell tail gas outlet is connected to the tandem tesla turbine inlet for providing working gas to the tandem tesla turbine.

4. The micro gas turbine combined cycle system with in-line tesla turbines as claimed in claim 1, wherein the steam power generation system is a steam turbine system;

5. The micro gas turbine combined cycle system with an in-line tesla turbine as claimed in claim 1, wherein the steam power generation system is an organic rankine cycle system;

6. The micro gas turbine combined cycle system with in-line tesla turbines as claimed in claim 1, wherein the solar receiver comprises a solar collection device, a solar mirror, a mounting stage, and an adjustment device; the solar energy collecting device is arranged on the gas turbine and used for heating a circulating medium on a working medium channel of the gas turbine, and the gas turbine is fixed above the solar reflecting mirror and enables the solar energy collecting device to be located at a sunlight reflecting and gathering point.

7. The micro gas turbine combined cycle system with an in-line tesla turbine as claimed in claim 3, wherein the fuel cell system further comprises an afterburner;

8. The micro gas turbine combined cycle system with the in-line tesla turbine as claimed in claim 2, wherein the in-line tesla turbine includes an electric motor having a shaft coupled to the shaft by a coupling; or,

the rotating shaft of the motor is the rotating shaft.

9. The micro gas turbine combined cycle system with the in-line tesla turbine as claimed in claim 2, wherein the in-line tesla turbine includes a thrust bearing disposed within any one tesla turbine unit.

10. The micro gas turbine combined cycle system with in-line tesla turbines as claimed in claim 2, wherein two radial bearings are located at the front end of the first stage tesla turbine unit and the rear end of the last stage tesla turbine unit, respectively, and outside the housing of the tesla turbine unit.