WO2008122199A1

WO2008122199A1 - Solar energy generating set

Info

Publication number: WO2008122199A1
Application number: PCT/CN2008/000662
Authority: WO
Inventors: Wenfeng Shi
Original assignee: Wenfeng Shi
Priority date: 2007-04-09
Filing date: 2008-04-02
Publication date: 2008-10-16
Also published as: CN101029631A; CN100507265C

Abstract

This is a solar energy generating set, a high-pressure reservoir (5) and an evaporator (6) are evenly sealed structure, there is a pipeline (23) in the high-pressure reservoir (5) connected to the upper part of the evaporator (6) from the lower part, a pressure control valve (19) is installed in the pipeline (23), the pipeline (23) is connected with the spray pipe net (34) in the inner cavity of the evaporator (6), and a steam-water separating board (7) is set underneath of the pipeline (23); there are steam tubes (8) on the upper part of the evaporator (6) connected to a low-pressure reservoir (2) after passing through a turbogenerator (10,11) and a steam heating radiator (12), and there is a reversed flow duct in the evaporator (6); there are pipelines in the inner-lower part of the low-pressure reservoir (2) connected with the high-pressure reservoir (5) after connecting to the high-pressure pump (3). The set can fully absorb the solar energy and transform it to mechanical energy so as to generate power, at the same time it is especially applied to grid-connected generation and power supply for electric automobile because of its low waste and high efficiency as working.

Description

Solar power plant

TECHNICAL FIELD The present invention relates to the field of solar energy, and more particularly to a solar power generation device.

Background technique

Energy is an important material basis for human existence and development. At present, the world's energy structure is based on fossil energy such as coal, oil, natural gas, etc.; fossil energy is a non-renewable resource, a large amount of consumption will eventually be exhausted, and a large amount of pollutants will be discharged during production and consumption, thus destroying Ecology and the environment. In order to ensure a stable and long-lasting energy supply, vigorous development of renewable, diverse new energy structures has become the development direction of energy development in various countries.

Today's renewable, clean, and clean energy sources include hydropower, wind power, and solar energy. After years of development of hydropower and wind power, the resources in this area are also in short supply, but the solar energy is inexhaustible. The human development and utilization devices on solar energy include solar water heaters, solar photovoltaic cells and low-boiling substances. After years of practice, it has proved that solar water heaters are economical, but they can only supply heat; solar photovoltaic panels generate electricity, although they can use solar power to generate electricity, but the efficiency is low, the cost is high and vulnerable. Therefore, solar photovoltaic panels have not been developed and utilized on a large scale. The solar generator using low-boiling substances as working substances is still in the research stage because the technology in this aspect is immature; for example, the invention patent application disclosed in the Chinese Patent Gazette, "Small Solar Generator", Publication No. CN1231389 The scheme has a solar evaporator with ammonia water as a heat exchange medium, and the output is connected with a steam separator, and the outlet end of the steam separator is connected to a steam turbine of a small steam turbine generator through a high-pressure ammonia gas pipe, and the steam turbine is connected to the generator. The exhaust end of the steam turbine is connected to the absorber through the return air pipe, and the water outlet end of the steam separator is connected to the absorber through the return pipe, and the outlet end of the absorber is connected to the solar evaporator through the output liquid pipe connected to the solution pump and the input liquid pipe. Another example is the utility model patent "Solar Generator" published in the Chinese Patent Gazette, bulletin No. CN2521552, which is technically converted into heat energy by solar energy, so that the low-boiling working fluid in the solar receiver generates high-temperature and high-pressure gas, and promotes the operation of the gas turbine. The medium is compressed by a compression pump to the condenser, and is cooled to a working liquid stream after cooling.

1

Confirmation Into the liquid storage tank, and then sent back to the solar receiver through the circulation pump for circulation work. The shortcomings of the above two cases are as follows: 1. Since the absorber at the rear end of the steam turbine cannot effectively reduce the pressure, the pressure difference between the front and the rear of the steam turbine is small; 2. The steam-water separator cannot effectively separate the refrigerant and the absorbent; When the working substance is sent to the evaporator, the energy consumed is large, so the efficiency of solar energy utilization is low.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a solar power generation apparatus which is low in cost, durable and efficient. In order to achieve the above object, the solar power generation device of the present invention comprises a high pressure liquid storage device, an evaporator, a steam water separation plate, a liquid collector, a solenoid valve, a safety valve, an electric flow regulating valve, a turbo generator, a high pressure liquid pump, and a liquid radiator, a gas radiator, an absorber, a low-pressure reservoir, etc.; characterized in that: the high-pressure reservoir and the evaporator that receive the solar energy are both sealed structures, and the pipeline is connected from the lower part of the inner chamber of the high-pressure reservoir After the exit, it is divided into two branches, one branch is connected to the upper part of the evaporator inner cavity, and the branch is equipped with a pressure controller. The branch is connected with a spray pipe network in the inner cavity of the evaporator, and the spray pipe net has a plurality of spray heads facing upward spray. The other branch is connected to the upper part of the inner cavity of the low-pressure accumulator below it, and the branch is safely wide; and the air duct is connected from the upper part of the inner chamber of the high-pressure accumulator to the lower part of the inner chamber of the low-pressure accumulator via the gas radiator a gas valve is disposed on the gas guiding pipe; the high pressure liquid storage device is provided with a pressure controller and a liquid level controller; the evaporator is externally equipped with a pressure controller; and the evaporator is in the evaporator The inclined steam-water separating plate is arranged under the spray pipe network; the evaporator inner cavity has an air-storing pipe sequentially passing through the lower part of the high-pressure liquid storage chamber, the electric flow regulating valve, the steam turbine generator, and the gas heat dissipation. The device is connected to the lower part of the inner cavity of the low-pressure liquid storage device; the lower part of the inner cavity of the evaporator has a pipe connected to the upper part of the liquid collector, the lower part of the liquid-concentrating device has a pipe connecting the electromagnetic valve, the outlet of the electromagnetic valve is connected with the liquid heat sink, and the radiator outlet is connected The upper part of the absorber has a spray head at the outlet, and the lower part of the absorber is connected to the upper part of the low-pressure liquid storage device; the upper part of the liquid-collector has a pipe-connected check valve, and a liquid level controller is installed; The low-pressure liquid storage device has a pipeline connected to the high-pressure liquid pump, the high-pressure liquid pump outlet has a pipe-connected electromagnetic valve, and the electromagnetic valve outlet has a pipe connected to the upper portion of the high-pressure liquid storage chamber; the low-pressure liquid storage device is equipped with an outward facing Check valve; said high pressure accumulator, evaporator, soda separator, accumulator, solenoid valve, safety valve, electric flow regulating valve, turbo generator, high pressure liquid pump and liquid The radiator, the gas radiator, the absorber, and the low-pressure accumulator are located above and below, and the high-pressure accumulator and the evaporator are at the uppermost portion. The top of the high-pressure accumulator and evaporator is sunny, which is convenient for absorbing solar energy, while the liquid radiator, gas radiator, absorber and low-pressure accumulator are protected from heat at the lower part to facilitate heat dissipation. The high-pressure liquid storage device has a heat-dissipating row, and the heat-conducting row is composed of longitudinal and lateral metal pillar welding. The high-pressure accumulator and the evaporator may be integrated or independent, and their outer cover is provided with a translucent cover. Advantageous Effects of Invention: The solar power generation device can fully absorb solar energy and convert it into mechanical energy to generate electricity, and the device is small in consumption and high in efficiency, so it is particularly suitable for grid-connected power generation and power supply for electric vehicles.

BRIEF DESCRIPTION OF THE DRAWINGS The invention will be further described in detail below with reference to the drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic view showing the structure of the embodiment of the present invention; Fig. 2 is a partial view taken along line A-A of Fig. 1; Fig. 3 is a partial view taken along line BB of Fig. 1. Fig. 4 is a partial view taken along line C-C of Fig. 1. . In the figure: 1-check valve, 2-low pressure reservoir, 3-high pressure pump, 4-electromagnetic valve, 5-high pressure reservoir, 6-evaporator, 7-soda separator, 8-duct gas pipe, 9-Electrical flow regulation, 10-turbine, 11-generator, 12-gas radiator, 13-concentrator, 14-level controller, 15-electromagnetic valve, 16-liquid radiator, 17-absorber , 18- safety wide, 19-pressure controller, 20-level controller, 21-pressure controller, 22-transparent cover, 23-catheter, 24 - gas radiator, 25-catheter, 26-catheter, 27 - spray head, 28-catheter, 29-pressure controller, 30-air pipe, 31-solenoid valve, 32-water surface, 33 - heat conduction row, 34-spray pipe network, 35-spray head, 36-check valve, 37-blocking grid Ribbing. 1 to 4, the solar power generation device of the present invention comprises a high pressure liquid storage device, an evaporator, a steam water separation plate, a liquid collector, a solenoid valve, a safety valve, an electric flow regulating valve, and a steam turbine generator. , high-pressure liquid pump and liquid radiator, gas radiator, absorber, low-pressure reservoir, etc.; high-pressure reservoir 5 and evaporator 6 for receiving solar energy are sealed structure, high-pressure reservoir and evaporator are integrated ( They can also be independent), the outer cover has a transparent cover 22, and the high-pressure liquid storage device has a heat-dissipating row 33, which is composed of vertical and horizontal metal columns, and the high-pressure liquid storage device is equipped with a liquid level controller 20 and pressure. The controller 21 is provided with a pressure controller 29 outside the evaporator; the conduit 23 is taken out from the lower portion of the inner chamber of the high-pressure reservoir and is divided into two branches, one branch is connected to the upper portion of the evaporator inner chamber, and the branch is equipped with a pressure controller 19, The branch is connected to a spray pipe network 34 in the inner cavity of the evaporator. The spray pipe network has a plurality of spray heads 35 sprayed upward, and the other branch communicates with the upper portion of the inner cavity of the low pressure accumulator 2 below it. Safety valve 18; The air guiding tube 30 is connected from the upper part of the inner cavity of the high-pressure liquid storage device to the lower part of the inner cavity of the low-pressure liquid storage device via the electromagnetic valve 4 and the gas radiator 24; the inner cavity of the evaporator is provided with the inclined steam-water separating plate 34, which is in the aforementioned spray. Below the pipe network, a choke block ridge 37 is printed on the plate; the air pipe 8 of the evaporator is sequentially passed through the electric flow regulating valve 9, the turbine generator 10, 11, the gas radiator 12, and then connected to the low pressure. The lower part of the inner cavity of the accumulator; the lower part of the inner cavity of the evaporator has a pipe connected to the upper part of the liquid accumulator 13, the lower part of the liquid accumulator has a pipe connecting the electromagnetic valve 15, the outlet of the electromagnetic valve is connected with the liquid radiator 16, and the outlet of the radiator is connected to the upper part of the absorber 17, The spray head 27 is installed at the outlet, and the lower part of the absorber is connected to the upper part of the low pressure liquid storage device; the upper part of the liquid collector is connected with the check valve 36, and the liquid level controller 14 is installed outside; the low pressure liquid storage The device 2 has a conduit connected to the high-pressure liquid pump 3, the high-pressure liquid pump outlet has a conduit 25 connected to the solenoid valve 31, and the solenoid valve 31 outlet has a tube connected to the upper portion of the high-pressure reservoir inner chamber; the low-pressure reservoir is equipped with an outward-facing check valve 1 ; high pressure accumulator, evaporator, soda separator, liquid , solenoid valve, safety wide, electric flow control valve, turbine generator and liquid radiator, gas radiator, absorber, low pressure reservoir, upper and lower, high pressure reservoir, evaporator at the top, its The top is sunny, which is convenient for absorbing solar energy, while the liquid radiator, gas radiator, absorber, and low-pressure accumulator are underwater to facilitate heat dissipation. The pressure controller 21 controls the opening and closing of the solenoid valves 4, 31 and the high pressure pump 3, the water level controller 20 controls the opening and closing of the solenoid valves 4, 31 and the high pressure pump 3, and the water level controller 14 controls the opening and closing of the solenoid valve 15. Off, pressure controller

29 controls the opening and closing of the electric flow regulating valve 9 and the solenoid valve 15, and the time controller controls the opening and closing of the solenoid valve 31 and the high pressure liquid pump 3. The solar power generation device uses a low-boiling substance and a miscible substance as a working substance, and the existing working medium has ammonia-water (NH3-H ₂ 0), ethylamine-water (C2H5NH2-H ₂ 0), methylamine. One water (CH3NH ₂ -H ₂ 0), sodium thiocyanate monoamine (NaSCN-NH3), R21-TEGDME, R22-TEGDME, etc.; the best working environment of the device is to install it on the water, when installed Use a buoy or bracket to expose the high pressure accumulator, evaporator, soda separator, liquid accumulator, solenoid valve, safety valve, electric flow regulating valve, and turbo generator to the surface of the water, so that the liquid radiator, gas radiator, and absorber The low pressure accumulator is under water; this makes full use of the low water temperature to dissipate heat. The working process of the solar power generation device will be described below by using a mixture of ammonia and water as a working substance.

1. Filling with working substances

The ammonia water mixture is externally pressurized, injected into the low pressure accumulator 2 via the check valve 1, and water is injected into the accumulator 13 through the check valve 36.

2, preparation before work

When the temperature is low at night, the solenoid valve 31 on the time controller action conduit 28 is energized to open, and then the high pressure liquid pump 3 is energized, and the ammonia water in the low pressure accumulator 2 is injected into the high pressure accumulator 5 through the conduit 25 and the conduit 28. When the ammonia water rises to the set level, the liquid level controller 20 operates, and the high pressure liquid pump stops while the solenoid valve 31 on the conduit 28 is de-energized.

3, the work process

During the daytime sun exposure to the high pressure accumulator 5 and the evaporator 6, with the irradiation of the sun (the heat conduction row 33 in the high pressure accumulator can uniformly heat the ammonia in the high pressure accumulator), the high pressure accumulator The ammonia gas is continuously separated from the ammonia water, and since the pressure control valve 19 and the safety valve 18 and the solenoid valves 4, 31 are closed, the high pressure reservoir pressure The force is continuously increased. When the pressure of the high pressure accumulator exceeds the set pressure of the pressure control valve 19, the pressure control valve 19 is opened, and the ammonia water in the high pressure accumulator 5 flows from the lower portion thereof through the conduit 23 to the evaporator 6, due to the conduit A plurality of upwardly facing spray heads 35 are installed at the outlet of the evaporator, and the ammonia water pressure is large, so that ammonia water is sprayed toward the upper part of the evaporator at the outlet of the evaporator, and the evaporator is sealed and the electric flow is regulated. The valve 9 and the electromagnetic width 15 are closed at this time. At the same time, because the sun shines and the internal temperature rises, the misty ammonia water is heated, and the ammonia boils to become ammonia gas. As the ammonia gas increases, the pressure in the evaporator increases. When the pressure is greater than the set value, the pressure controller 29 of the evaporator operates to turn on the motor of the electric flow regulating valve 9, and the electric flow regulating valve is opened. The higher the pressure, the larger the opening of the electric flow regulating valve, and the inside of the evaporator The high-pressure ammonia vapor is rushed to the impeller of the steam turbine 10 through the air guiding tube 8 and the electric flow regulating valve 9, and the impeller drives the rotor of the generator 11 to rotate, and the generator generates electricity; meanwhile, the steam turbine comes out After the ammonia gas is dissipated by the gas radiator 12, it is flushed into the low-pressure accumulator 2, and is dissolved in the low-temperature ammonia water in the low-pressure accumulator 2, and the ammonia gas which is not soluble in the ammonia water rises to the upper part of the low-pressure accumulator and enters the absorption. Inside the device 17. Some of the ammonia water sprayed in the evaporator will fall on the steam-water separation plate 7. Since the steam-water separation plate has a square-shaped flow-blocking rib 37, the ammonia water stays on it for a longer period of time, and the ammonia water is heated. The ammonia gas keeps boiling. When the tail water vapor separation plate 7 is at the tail, ammonia and water are basically separated. Due to the inclination of the steam-water separation plate, the water continuously flows to the lower part of the evaporator. Since the tube is connected to the liquid collector 13 under the evaporator, the water direction The liquid collector converges. At the beginning, the electromagnetic width 15 is closed (the solenoid valve 15 is controlled by the liquid level controller 14 and the pressure control unit 29), and the water level in the liquid collector is continuously rising. When the temperature is higher than the set water level, the liquid is collected. The liquid level controller 14 outside the device operates, and the solenoid valve 15 is energized to open (when the water level is lower than the set value, the solenoid valve 15 is closed), because the pressure inside the evaporator is large, the water dissipates heat to the water or seawater through the liquid radiator, to At the outlet of the absorber, the water temperature is low, and at the same time, the spray head 27 is installed at the outlet and the water pressure is large, and the water mist is completely filled with the absorber, and at the same time, the ammonia gas is dissolved therein to become the ammonia water flowing into the low pressure reservoir 2.

When the ammonia water in the high pressure accumulator is lower than the set liquid level, the liquid level controller 20 outside the high pressure accumulator operates (at this time, the normally open contact of the pressure controller 21 is turned on), on the air guiding tube 30 The solenoid valve 4 is energized to open, because the pressure in the inner chamber of the high-pressure reservoir is large, the ammonia gas in the upper part of the high-pressure reservoir passes through the air guiding tube 30 and the gas radiator 24 to the low-pressure liquid storage. The lower part of the device flows, because ammonia gas is dissipated through the gas radiator, so the ammonia temperature is low and it is easily dissolved with the ammonia in the low-pressure accumulator; when the ammonia pressure in the high-pressure accumulator is less than the set pressure, the high-pressure accumulator The external pressure controller 21 operates (normally closed conduction), the high pressure liquid pump 3 is energized, and the solenoid valve 31 on the conduit 25 is energized to open, and the ammonia water in the low pressure reservoir is passed through the high pressure liquid pump 3, the conduit 25, and the electromagnetic The valve 31 and the conduit 28 flow into the high-pressure liquid storage device. When the ammonia aqueous solution is higher than the set liquid level, the liquid level controller 20 operates, and the high-pressure liquid pump 3 is de-energized and stopped, and at the same time, the air guiding tube 30 and the electromagnetic valve on the conduit 25 4, 31 closed.

When the pressure in the high pressure accumulator is greater than the safely set pressure during the day, the safety valve 18 will be turned on, and the ammonia in the high pressure accumulator will flow into the low pressure liquid storage through the conduit 23, the safety valve 18, and the conduit 26. In the device, when the pressure of the high pressure accumulator is less than the safe set value, the safety valve 18 is closed to provide safety protection.

When the temperature is low at night, the time controller operates, the high pressure liquid pump 3 is energized, and the solenoid valve 31 on the conduit 25 is energized to open, and the ammonia in the low pressure reservoir will pass through the high pressure liquid pump 3, the conduit 25, and the electromagnetic The valve 31 and the conduit 28 flow into the high-pressure liquid storage device. When the liquid level of the high-pressure liquid storage device is higher than the set value, the liquid level controller 20 operates, the electromagnetic valve 31 on the conduit 25 is powered off, and the high-pressure liquid pump 3 is powered off. Stopping is ready for the next generation.

The high-pressure accumulator of the present embodiment has an integral structure with the evaporator, and may of course be independent of each other.

Claims

1. A solar power generation device, comprising a high-pressure liquid storage device, an evaporator, a steam-water separation plate, a liquid collector, a solenoid valve, an electric flow regulating wide, a steam turbine generator, a high-pressure liquid pump and a liquid radiator, a gas radiator, Absorber, low-pressure accumulator; characterized in that: the high-pressure accumulator (5) and the evaporator (6) for receiving solar energy are sealed structures, and the high-pressure accumulator is equipped with a pressure controller (21) and a liquid a position controller (20); a pipe (23) is connected from a lower portion of the inner chamber of the high pressure accumulator to an upper portion of the inner chamber of the evaporator, and a pressure control valve (19) is installed in the pipe, and the pipe is connected with a spray pipe in the inner cavity of the evaporator. In the net 34, the spray pipe network is provided with a plurality of upwardly facing spray heads (35); the gas pipe is connected from the upper part of the inner cavity of the high pressure liquid storage device to the lower part of the inner cavity of the low pressure liquid storage device via the electromagnetic valve (4); The chamber is provided with a slanted steam-water separating plate (7), which is located below the spray pipe network; an air-pipe (8) is arranged in the upper part of the inner cavity of the evaporator, and sequentially passes through the electric flow regulating valve (9) and the steam turbine generator (10, 11), the gas radiator (12) is connected to The lower part of the inner chamber of the low-pressure accumulator; the pressure controller (29) is arranged outside the evaporator, and the lower part of the inner chamber is sequentially provided with a liquid collector (13), an electromagnetic wide (15), a liquid radiator (16) and absorption. The device (17) is then returned to the low pressure accumulator, wherein the upper portion of the absorber is provided with a spray head (27), and the liquid accumulator is provided with a liquid level controller (14) and an outwardly facing check valve (36); The lower part of the low-pressure liquid storage device is connected to the high-pressure liquid pump (3) and then connected to the electromagnetic valve (31). Finally, the pipe is connected to the upper part of the high-pressure liquid storage device; the low-pressure liquid storage device is provided with a check valve (1) facing outward; The high pressure accumulator, evaporator, steam separator, liquid accumulator, solenoid valve, electric flow regulating valve, turbo generator, high pressure liquid pump and liquid radiator, gas radiator, absorber, low pressure liquid storage The upper and lower parts of the device are located, wherein the high-pressure liquid storage device and the evaporator are at the uppermost portion, the top of the high-pressure liquid storage device and the evaporator are sun-facing, and the liquid radiator, the gas radiator, the absorber, and the low-pressure reservoir are in the lower portion. .

2. The solar power generating apparatus according to claim 1, wherein: said high pressure accumulator and said evaporator are integrally formed, and said outer cover has a transmissive cover (22). Rights request

The solar power generating apparatus according to claim 1, characterized in that: the steam-water separating plate (7) is printed with a flow-blocking lattice rib (37).

4. The solar power generating apparatus according to claim 1, wherein: a gas radiator (24) is connected to the gas pipe connected from the upper portion of the inner chamber of the high pressure accumulator to the lower portion of the inner chamber of the low pressure accumulator.

5. The solar power generating apparatus according to claim 1, wherein: a pipe is connected from a lower portion of the inner chamber of the high pressure accumulator to an upper portion of the inner chamber of the low pressure accumulator, and a safety valve (18) is mounted on the duct.

6. The solar power generating apparatus according to claim 1, wherein: said pressure controller (21) controls opening and closing of the solenoid valve (4, 31) and the high pressure liquid pump (3), and the water level controller ( 20) Control solenoid valve (4, 31) and high pressure liquid pump (3) on and off, water level controller (14) controls solenoid valve (15) on and off, pressure controller (29) controls electric flow control valve (9) With the solenoid valve (15) open and closed, the time controller controls the electromagnetic wide (31) and the high pressure liquid pump (3) on and off.

7. The solar power generating apparatus according to claim 1, wherein: said high-pressure accumulator has a heat-dissipating row (33), which is composed of vertical and lateral metal pillars.