KR20120102194A - Electric power generation system using fluid circulation - Google Patents

Abstract

PURPOSE: A power generating system using the self-circulating of fluid is provided to improve generating efficiency using a rotary engine with minimized mechanical losses. CONSTITUTION: A power generating system using the self-circulating of fluid comprises a fluid container(10), an electrical energy generating unit(20), a condenser(30), a gas-liquid separator(40), and a receiver tank(50). The electric energy generating unit comprises a rotary valve, a rotary engine, and generating unit. The condenser cools the fluid discharged from the electrical energy generating unit. The gas-liquid separator collects liquids and gas discharged from the condenser, and discharges only the liquids. The receiver tank collects the liquids discharged from the gas-liquid separator.

Description

Power generation system using the self-circulation of fluids {ELECTRIC POWER GENERATION SYSTEM USING FLUID CIRCULATION}

The present invention relates to a power generation system using a self-circulation of a fluid, and more particularly, a fluid capable of producing electrical energy using a pressure of a fluid according to a phase change while circulating a fluid in which a phase change of a gas and a liquid is easily converted. Relates to a power generation system using its own circulation.

In recent years, energy conservation is becoming more important as the reserve of fossil energy, which is an underground resource, decreases with environmental problems. Accordingly, various technologies for improving energy use efficiency have been developed.

Examples thereof include a method of producing heating or electric energy using solar heat, and a method of generating hot water or electricity using waste heat and the like.

Among them, a method of making hot water using solar heat and using it as indoor heating energy or producing electric energy is mainly developed. The method using solar heat accumulates solar heat energy into a heat collecting plate to heat water and uses the heated hot water. By circulating indoors and heating or using hot water, the degree of solar heat is collected according to the number and area of the heat collecting plate, and the heating efficiency is different.

On the other hand, as a method of generating electricity using solar heat, for example, Patent Publication No. 2010-0042969 (Power Generation System) is disclosed.

The technique is to compress the low-pressure gaseous fluid as shown in Figure 1 to discharge the high-temperature, high-pressure gaseous fluid and the high-temperature, high-pressure gaseous fluid supplied from the compressor A condenser (2) for exchanging the liquid in a high temperature liquid state by heat-exchanging with air or cooling water, an expansion valve (3) for reducing the high-temperature liquid fluid discharged from the condenser into a liquid in a low temperature liquid state, and A refrigeration cycle comprising: an evaporator (4) for evaporating a fluid in a low temperature liquid state passing through an expansion valve to supply a gas in a low temperature, low pressure gas state to the compressor; A steam turbine (5) positioned between the compressor and the condenser of the refrigeration cycle, the rotating blade of which is provided on a rotating shaft installed therein by the high-temperature, high-pressure gaseous fluid discharged from the compressor; It is configured to include; and a generator (6) having a shaft coupled to the rotary shaft of the steam turbine.

In the conventional power generation system configured as described above, the steam turbine 5 driven by the fluid is driven using the pressure generated when the high pressure fluid is expanded, and sufficient pressure must be generated to drive the engine of the steam turbine. As a result, sufficient fluid pressure is required to drive the generator and the power generation system must be huge.

In addition, an engine such as the steam turbine 5 is a piston type engine that converts linear motion into rotational motion. In the piston type engine, the vibration and linear reciprocation of linear reciprocating motion are converted into rotational motion energy. Engine efficiency is reduced due to the loss of oil and the weight of the piston and rocker arm, and there is a difficulty of precisely inhaling and discharging the high pressure fluid, and the pressure of the fluid must be considerably high. There is a problem that can not be adjusted arbitrarily.

As such, efforts have been made to recover the expansion energy at the time of decompression of the fluid to drive power or produce electrical energy, but are still inadequate, and thus, an apparatus and method for increasing engine efficiency are required.

The present invention, as part of the development to produce electrical energy even in the low-pressure fluid as described above to drive the engine using the pressure of the gas phase-converted from liquid to gas as a low-pressure fluid by supplying the appropriate amount of gas It is also an object of the present invention to provide a power generation system using a self-circulation of a fluid capable of operating an engine and reducing electrical losses due to driving the engine to produce electrical energy.

A fluid storage container (10) in which a gaseous fluid is stored in the power generation system using the self-circulation of the fluid according to the above object; Rotary valve 100 for controlling the injection time of the fluid transferred from the fluid storage container 10, and a rotary engine 200 for converting the expansion force to the rotational energy by the decompression of the fluid discharged from the rotary valve 100 And an electrical energy generator 20 for generating electrical energy using the expansion force of the fluid, including a power generator 400 for converting rotational energy into electrical energy by receiving rotational force from the rotor engine 200; A condenser (30) for cooling the fluid discharged from the electric energy generator (20); A gas-liquid separator 40 for collecting liquid and gas discharged from the condenser 30 and separating and discharging only liquid; A receiver tank 50 for collecting fluid in a liquid state discharged from the gas-liquid separator 40; A pump 60 for transferring the collected fluid to the receiver tank 50 and a vaporizer 70 for vaporizing the fluid discharged from the pump 60; It is achieved by configuring.

According to the present invention, while the fluid circulates itself and undergoes a phase change to gas and liquid, the high-pressure fluid is driven by the rotating engine, and the driving of the power generating device is operated by the driving of the rotating engine. By using the naturally-occurring energy can minimize the cost according to the operation of the power generation device, it is possible to produce electrical energy at a low cost, there is an effect that the efficiency is increased by using a rotary engine with a minimum mechanical loss.

1 is a configuration diagram of a conventional power generation system,
2 is a configuration diagram of a power generation system using self-circulation of a fluid according to the present invention;
3 is a perspective view of an electric energy generating unit in the power generation system of the present invention;
Figure 4 is an exploded perspective view of a rotary valve of the electric energy generating device in the present invention,
Figure 5 is an exploded perspective view of a rotating engine of the electric energy generating device in the present invention,
6 is a cross-sectional view of the rotary engine according to FIG. 5;
7 is a configuration diagram of a heat source used for vaporization according to the power generation system of the present invention.

Hereinafter, the power generation system using the self-circulation of the fluid of the present invention will be described in more detail through the accompanying drawings.

The present invention relates to a power generation system using a self-circulation of a fluid capable of producing electrical energy by using a pressure of a fluid according to a phase change while circulating a fluid in which a phase change of gas and a liquid is easily converted. 2 shows the configuration of a power generation system using the self-circulation of the fluid according to the present invention.

As shown in FIG. 2 of the accompanying drawings, the power generation system of the present invention includes a fluid storage container 10, an electric energy generating unit 20, a condenser 30, a gas-liquid separator 40, a receiver tank 50, and a pump 60. And a vaporizer 70, and the vaporized fluid from the vaporizer 70 is introduced into the fluid storage container 10 again to form a passage so that the fluid circulates through the devices.

The fluid storage container 10 is a gaseous fluid is stored therein, the vaporized fluid is stored in the vaporizer 70.

Auxiliary fluid storage container 11 may be further connected to the fluid storage container 10, and the auxiliary fluid storage container 11 may reduce the pressure of the fluid storage container 10 to a predetermined value or less due to loss of fluid. If so, the fluid storage container 10 is configured to replenish the fluid.

The conditions to be provided as a fluid used in the present invention is ① evaporation at a pressure higher than atmospheric pressure even at low temperature and liquefying at a relatively low pressure at room temperature, ② less power for the same freezing capacity, ③ high critical temperature, low solidification temperature ④ The heat of evaporation is large, the specific heat of liquid is small, and the ratio of liquid specific heat to evaporation heat is small. ⑤ The volume of refrigerant gas is small for the same freezing capacity. ⑥ The chemical bond is good, so the refrigerant gas is decomposed by compressed heat. Although it does not generate any gas other than refrigerant gas, ⑦ low viscosity, good thermal conductivity, ⑧ flammable explosion, harmless to the human body, no odor, ⑨ easy to find when leaking, ⑩ low price Although this may be difficult to meet all of the above conditions.

Examples of the fluid include ammonia, carbon fluoride, carbon dioxide, sulfurous acid gas, methyl chloride, and ethyl chloride, and may be appropriately selected depending on convenience of use, stability, on-site conditions and environmental protection.

Next, the electric energy generating unit 20 will be described.

The electrical energy generator 20 is a device for converting the expansion energy when converted to low pressure into electrical energy while expanding the high-pressure fluid supplied from the fluid storage container 10, the electrical energy generator 20 is a fluid A rotary valve for controlling the injection of a rotary engine, a rotating body engine for converting the expansion energy into rotational energy, and a generator for converting the rotational energy of the rotating engine into electrical energy.

3 of the accompanying drawings shows an electric energy generating unit in the power generation system of the present invention, the electric energy generating unit is largely composed of a rotary valve, a rotating engine, a speed increaser and a generator.

4 of the accompanying drawings shows an exploded perspective view of the rotary valve used in the electric energy generating device in the present invention, first, the rotary valve 100 will be described.

The rotary valve 100 is to inject a high-pressure fluid into the rotary engine 200 to control the timing of the injection, as shown in FIG. 4, the inlet 111 through which the fluid is introduced and the outlet through which the fluid is discharged. A body 110 composed of 112; It is provided inside the body 110, the through hole 121 is provided and the valve for opening and closing the inlet 111 and the outlet 112 in accordance with the rotational displacement of the through hole 121 by rotation A rotor 120; A shaft 130 extending and installed at upper and lower portions of the valve rotor 120; A cap 140 coupled to upper and lower portions of the body 110 to support the shaft 130 and to allow the valve rotor 120 to be rotatable inside the body 110; A fluid is installed between the bearing 150 provided between the inner circumference of the cap 140 and the outer circumference of the valve rotor 120 and the outer circumference of the valve rotor 120 and the inner circumference of the body 110. Bushing 160 to seal.

In addition, the cap 140 may be more securely supported to the shaft 130 and the bonnet 170 may be screwed to further seal the fluid, and the inside of the bonnet 170 is an elastic spring 171, washer 172 and the packing member 173 are sequentially installed.

The structure of the said rotary valve 100 is demonstrated in detail.

The body 110 is formed in a cylindrical shape, the inside thereof is hollow, and the inlet 111 through which fluid is introduced and the outlet 112 corresponding to the inlet 111 are discharged. The valve rotor 120 is installed in the inner hollow portion of the body 110.

The valve rotor 120 is provided inside the body 110. The valve rotor 120 is provided with a through hole 121, and the through hole 121 rotates by the rotation of the valve rotor 120. While being displaced, the inlet 111 and the outlet 112 are opened or closed.

That is, when the through hole 121 is located in the range of the inlet 111 or the outlet 112 by the rotation of the valve rotor 120, the inlet 111 and the outlet 112 communicate with each other, and the valve rotor 120 rotates. When the through hole 121 is out of the range of the inlet 111 or the outlet 112, the inlet 111 and the outlet 112 are closed.

Upper and lower portions of the valve rotor 120 are provided with shafts 130 extending to the valve rotor 120, respectively.

The inner circumference of the bushing 160 is in contact with the outer circumference of the valve rotor 120, and may be made of a material that absorbs heat generated by the rotation of the valve rotor 120 and easily absorbs the heat. . In addition, a gasket 151 is installed on the interface between the valve rotor 120, the bushing 160, the cap 140, and the bearing 150, which are in contact with each other in the body 110.

The power source for driving the rotary valve 100 is applied to a control motor (not shown in the drawing) which is driven by the rotational force of the rotary engine 200 to be described below or driven by electrical energy generated by the generator 400. It may also be made by.

Next, a rotating engine will be described.

5 of the accompanying drawings shows an exploded perspective view of a rotary engine of the electric energy generating device in the present invention, the rotary engine 200 used in the electric energy generating device of the present invention controls the rotary valve 100 It is a device for converting the high pressure fluid discharged by the inlet and decompression in the inside of the high pressure fluid at the time of decompression into rotational energy, the engine housing 210, the engine rotor 220, the shaft shaft 230 ), The rotary wing 240, and comprises a cover 250.

The engine housing 210 has a cylindrical operation chamber 213 formed therein and seals the outside. The operating chamber 213 of the engine housing 210 is provided with an engine rotor 220 spaced apart from its central axis and is installed eccentrically. The rotational force of the engine rotor 220 is transmitted to the center axis of the engine rotor 220 to the outside. The shaft shaft 230 for transmitting is installed.

Rotating blades 240 are provided in plurality in the axially perpendicular direction of the engine rotor 220 and one side is in contact with the inner peripheral surface of the operating chamber and the other side is provided to be slidable to the inner side of the engine rotor 220, the engine rotor ( The configuration to be slidable to the inner side of the 220 is made by the push rod 241 to elastically support the rotary blade 240.

One side surface of the engine housing 210 is provided with an inlet port 211 in communication with the operating chamber 213 and the fluid discharged from the rotary valve 100 is introduced, the outlet port facing the inlet port 211 212 is installed and the expanded fluid is discharged through the discharge port 212.

The heat dissipation fin 214 is provided on the outer surface of the engine housing 210 to radiate heat generated by friction between the rotary blade 240 and the wall of the operation chamber 213 to the outside by the rotation of the engine rotor 220. This is installed.

Covers 250 are installed on the left and right sides of the engine housing 210, and the shaft 250 extends through the cover 250 to extend through the cover 250.

Here, the cover 250 and the engine housing 210 is provided with a bearing 252 for smooth rotation of the shaft shaft 230 and an O-ring 251 for sealing the fluid, the outer portion of the cover 250 is the shaft A sealing member 253 for sealing the fluid by the rotation of the shaft 230 and a seal cover 254 for fixing the sealing member 253 are provided.

The operation of the rotary engine 200 having the above configuration will be described.

6 of the accompanying drawings shows a cross-sectional view of the rotary engine, and as shown in FIG. 6, the high pressure fluid is moved to the inlet port 211 of the rotary engine 200 by the rotation of the rotary valve 100. You are guided.

The fluid guided to the inlet port 211 is introduced into one of the space formed by the wall and the rotary blade 240 of the operation chamber 213 and expands while pushing the rotary blade 240 by the pressure of the high pressure fluid. That is, the engine rotor 220 is installed so as to be eccentric in the center of the shaft of the operating chamber 213, and the space formed by the wall and the rotary blade 240 of the operating chamber 213 is different in size and flows into a small space. The high pressure fluid pushes the rotor blades 240 by the expansion energy existing in the fluid, and eventually rotates the engine rotor 220.

Accordingly, when the high pressure fluid is expanded and pushes the rotary blade 240, the engine rotor 220 is rotated and the expanded fluid rotates the engine rotor 220 by the expansion force of the high pressure fluid introduced in the next step and discharge port Ejected via 212.

In this process, the rotation of the rotary valve 100 may be controlled to supply an appropriate amount of high pressure fluid to the rotating engine 200, and the rotating engine 200 may generate rotational energy only by inflow of the high pressure fluid. . In addition, it is possible to adjust the pressure of the discharge fluid of the rotary engine 200 only by controlling the rotary valve 100, and it is easy to convert the high pressure fluid into a low pressure fluid of which the constant pressure is reduced, thereby controlling the fluid pressure on the secondary side. It can be effective.

Rotating energy generated by the rotating engine 200 is applied to the power generator 400 is converted into electrical energy.

The generator 400 may be selected from an alternator or a direct current generator, and may be configured between the rotor engine 200 and the generator 400 in order to transmit sufficient rotational force to the generator 400. A speed increaser 300 may be further provided to receive the rotational force of the shaft shaft 230 to increase the speed.

In the above configuration, the power generator 400 generating electric energy using the rotational force and the speed increaser 300 receiving and increasing the rotational speed thereof are well-known techniques, and thus a detailed description thereof will be omitted.

On the other hand, the fluid used by the drive of the rotary engine 200 is expanded and converted into a low pressure fluid is discharged, the discharged fluid is transmitted to the condenser 30.

The condenser 30 is a device for condensing liquid by heat-exchanging a gaseous fluid to ambient air or cooling water, and cools the fluid discharged from the electric energy generator 20.

The power source for driving the condenser 30 may be driven by the electrical energy generated by the generator 400, but if the electrical energy used in the condenser 30 occupies a substantial portion, the power generation system of the present invention may be The efficiency is lowered, which makes it difficult to drive other external devices. However, in order to convert all of the fluid in the gas state into the liquid state through the condenser 30, a lot of electrical energy must be supplied. When a lot of electrical energy is supplied, the efficiency is lowered as described above, There is a reduced problem.

Therefore, the condenser 30 needs to be supplied by supplying an appropriate power source. In the present invention, only a minimum amount of electric energy is supplied to liquefy the fluid in a gas state, thereby discharging the fluid in a state in which the liquid and gas are mixed in the condenser 30. And a gas-liquid separator 40 for separating and supplying gas.

The gas-liquid separator 40 collects the fluid in a mixed state of the liquid and the gas discharged from the condenser 30, separates and discharges only the liquid, and feeds the gaseous fluid back to the condenser 300 again.

With the configuration of the gas-liquid separator 40, only the fluid in the liquid state can be separated and supplied, and only the fluid maintained in the liquid state can be vaporized to generate a uniform high pressure fluid gas.

The condensed fluid discharged from the receiver tank 50 and the gas-liquid separator 40 is collected and transferred to the pump 60, and the pump 60 forcibly transfers the fluid collected in the receiver tank 50 to the vaporizer 70. do.

Vaporizer 70 vaporizes the fluid discharged from the pump 60, Figure 7 of the accompanying drawings is a block diagram of a heat source used for vaporization in the vaporizer according to the present invention.

The heat source used in the vaporizer 70 may be composed of one or more selected from solar heat 71, geothermal heat 72, waste heat 73, and heat transfer 74.

Although not shown in the drawing, the solar heat 71 includes a collector that collects solar heat; A heat storage tank for accumulating solar heat collected in the collector is provided, and the accumulated gas is used to phase-convert the fluid to gas in the vaporizer 70.

Geothermal 72 and waste heat 73 are also not shown in the figure, but consists of a collecting tank for collecting the geothermal and waste heat and the supply device for supplying the collected heat phase-converts the fluid to gas in the vaporizer 70 .

The heat transfer 74 phase-converts the fluid into gas in the vaporizer 70 by using a heat source generated by electricity.

Solar heat 71, geothermal heat 72 and waste heat 73 except for the heat transfer 74 is a heat source that is discarded or wasted, and if the power plant is driven using such a heat source, heat can be efficiently used and resources You will save.

According to the present invention, while the fluid circulates itself and undergoes a phase change to gas and liquid, the high-pressure fluid is driven by the rotating engine, and the driving of the power generating device is operated by the driving of the rotating engine. By using the naturally occurring energy, it is possible to minimize the cost required for the operation of the power generation device, and thus it is possible to produce electric energy at low cost. In particular, in the rotating engine, the injected fluid directly rotates the engine rotor to drive the rotating engine. High losses can be expected due to minimal losses.

10: fluid storage container 11: auxiliary fluid storage container
20: power generator 30: condenser
40: gas-liquid separator 50: receiver tank
60: pump 70: carburetor
71: solar heat 72: geothermal
73: heat 74: heat
100: rotary valve
110: body 111: inlet
112 outlet 120 valve rotor
121: through hole 130: shaft
140: cap 150: bearing
151: gasket 160: bushing
170: bonnet 171: spring
172 washer 173 packing
200: rotor engine
210: engine housing 211: suction port
212 discharge port 213 operating chamber
214: heat radiating fin 220: engine rotor
230: shaft shaft 240: rotary blade
241: push rod 250: cover
251: O-ring 252: bearing
253: sealing member 254: seal cover
300: control device
310: pressure sensor 320: display unit
321: current pressure display unit 322: set pressure display unit
323: operation button unit 330: input unit
340 control unit 350 output unit

Claims (6)

A fluid storage container 10 in which a gaseous fluid is stored therein;
Rotary valve 100 for controlling the injection time of the fluid transferred from the fluid storage container 10, and a rotary engine 200 for converting the expansion force to the rotational energy by the decompression of the fluid discharged from the rotary valve 100 And an electrical energy generator 20 for generating electrical energy using the expansion force of the fluid, including a power generator 400 for converting rotational energy into electrical energy by receiving rotational force from the rotor engine 200;
A condenser (30) for cooling the fluid discharged from the electric energy generator (20);
A gas-liquid separator 40 for collecting liquid and gas discharged from the condenser 30 and separating and discharging only liquid;
A receiver tank 50 for collecting fluid in a liquid state discharged from the gas-liquid separator 40;
Pump 60 for transferring the collected fluid to the receiver tank 50 and
A vaporizer 70 for vaporizing the fluid discharged from the pump 60; Power generation system using the self-circulation of the fluid, characterized in that consisting of.
The method according to claim 1,
The rotary valve 100
A body 110 including an inlet 111 through which the fluid is introduced and an outlet 112 through which the fluid is discharged;
It is provided inside the body 110, the through hole 121 is provided and the valve for opening and closing the inlet 111 and the outlet 112 in accordance with the rotational displacement of the through hole 121 by rotation A rotor 120;
A shaft 130 extending and installed at upper and lower portions of the valve rotor 120;
Caps 140 coupled to upper and lower portions of the body 110 and supporting the valve rotor 120 to be rotatable inside the body 110;
A bearing 150 provided between an inner circumference of the cap 140 and an outer circumference of the rotor 120;
And a bushing (160) installed between an outer circumference of the valve rotor (120) and an inner circumference of the body (110).
The method according to claim 1,
The rotary engine 200
An engine housing 210 having a cylindrical operation chamber 213 formed therein and sealing an outside thereof;
An engine rotor 220 spaced apart from the central axis of the operation chamber 213 and installed;
A shaft shaft 230 installed at the center shaft of the engine rotor 220 to transmit the rotational force of the engine rotor 220 to the outside;
A plurality of rotor blades installed in the axially perpendicular direction of the engine rotor 220, one side of which is in contact with the inner circumferential surface of the operation chamber 213 and the other side of which is slidable to an inner side of the engine rotor;
An inlet port 211 through which fluid discharged from the rotary valve 100 flows into one side of the operation chamber 213 and
And a discharge part (212) installed facing the inlet port (211) and discharged from the pressure-reduced fluid by expansion.
The method according to claim 3,
Power generation system using a self-circulation of the fluid, characterized in that the heat dissipation fin (214) is provided on the outer surface of the engine housing (210).
The method according to claim 1,
A power generation system using a self-circulating fluid between the rotary engine 200 and the power generator 400 is further provided with a speed increaser 300 receiving and increasing the rotational force of the shaft shaft 230. .
The method according to claim 1,
The heat source used in the vaporizer (70) is a power generation system using the self-circulation of the fluid, characterized in that composed of one or more selected from solar heat (71), geothermal heat (72), waste heat (73) and heat transfer (74).

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