JPH0229842B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a power generation device that drives a turbine, etc. using a substance that is easily vaporized and liquefied, such as freon or ether, as a working fluid for a power source. It is.

[Conventional technology]

Steam turbines that use water as a working fluid have generally been widely used in conventional power generation facilities. However, as is well known, water has a relatively high boiling point and large specific heat and latent heat, so steam turbines that use water as a working fluid have the advantage of being able to obtain high output, but on the other hand, they require a large amount of energy to vaporize water. It has the disadvantage of being necessary.

On the other hand, as a power source for driving a turbine, power generation devices that utilize the cold energy possessed by substances other than water, such as low-temperature liquefied gas such as LNG, have been put into production since 1982.
- Known from No. 174708 etc.

In this power generation device, a vaporized heat medium is turned into a liquefied heat medium by a condenser, this liquefied heat medium is heated and vaporized by an evaporator, and this vaporized heat medium is used to drive a turbine. The vaporized heat medium after being driven is supplied to the condenser again, continuing the cycle.

[Problem to be solved by the invention]

However, in this device, as a means for supplying the liquefied heat medium liquefied by the condenser to the evaporator as a vaporized heat medium, a plurality of units are required to store the liquefied heat medium above the evaporator. The liquefied heat transfer medium stored in these tanks is supplied to the evaporator using the head difference between these tanks and the evaporator. Therefore, while the liquefied heat medium is being supplied to the evaporator from one tank, the liquefied heat medium supplied from the condenser is stored in the other tank, so the liquefied heat medium is evaporated. There is a problem in handling that the switching valves of many tanks must be operated each time during the process of sending the tank to the container. Furthermore, in this device, although the head difference between the tank and the evaporator is used as a means to supply the liquefied heat medium in one tank to the evaporator, for,
Because it is necessary to supply a portion of the vaporized heat medium that is supplied from the evaporator to the turbine into the tank, it is not possible to use all of the vaporized heat medium obtained in the evaporator as a power source for driving the turbine. There are problems.

[Means to solve the problem]

The purpose of the present invention is to solve the problems of conventional power generation devices as described above, and as a specific means for that purpose, a material that is easily vaporized and liquefied, such as freon or ether, is sealed inside. A pressure vessel is provided for pumping a working fluid to the outside using compressed air, and a pair of heating chambers are provided above the pressure vessel for converting the working fluid sent from the vessel through a separate conduit into a high-temperature, high-pressure gas. a turbine driven by high-temperature, high-pressure gas obtained from the one heating chamber;
A pipe line having a cooling chamber for liquefying the gas after driving the turbine, and a return tank for storing the working fluid liquefied in the cooling chamber,
The return tank and the pressure vessel are connected by a return pipe, and the other heating chamber of the pair of heating chambers and the return tank are connected by a pressure introduction pipe with a valve.

[Effect]

In the apparatus of the present invention, the working fluid in the pressure vessel is sent to one heating chamber by compressed air acting on the vessel and converted into a high temperature and high pressure gas,
This vaporized working fluid drives the turbine, and after driving the turbine, the working fluid is sent to a cooler where it is liquefied and stored in a return tank. The liquefied working fluid stored in this return tank requires a certain pressure in order to be returned to the pressure vessel, but this pressure is obtained in a heating chamber separate from the heating chamber for sending gas to the turbine. The high-temperature, high-pressure gas is supplied into the return tank through the pressure introduction pipe. As a result, the liquefied working fluid in the return tank is returned to the pressure vessel, but the gas pressure to be supplied into the return tank is different from that of the gaseous working fluid supplied to the turbine as described above. Since the vaporized working fluid obtained from the heating chamber for supplying the turbine can be effectively used without waste, the turbine can be continuously driven.

〔Example〕

Next, the apparatus of the present invention will be explained with reference to an embodiment shown in the drawings. In FIG. 1, 1 is a compression container;
A working fluid 2 that is easily vaporized and liquefied, such as freon or ether, is sealed inside, and compressed air is introduced from an external compressor 3 to apply a required pressure to the working fluid 2. 4 is a water level gauge that monitors the amount of working fluid 2 sealed in the pressure vessel 1; 5 is a pressure gauge that monitors the internal pressure of the pressure vessel 1;
6 is a safety valve that releases air pressure when the internal pressure of the pressure gauge 1 exceeds a set value. Reference numeral 7 denotes an inlet for replenishing the working fluid 2 in the pressure vessel 1 when it decreases.

From the lower part of the pressure vessel 1, conduits 9 and 24 for separately sending out the working fluid in the vessel 1 are branched out, and heating chambers 8 and 22 are provided at the upper ends of these conduits 9 and 24, respectively. The working fluid 2 is heated by these heating chambers 8 and 22 and converted into a high-temperature, high-pressure gas. Said conduit 9, 24
In each case, a check valve 1 is installed in front of the heating chambers 8 and 22.
0 and 25 are provided.

Among the pair of heating chambers 8 and 22, the outlet of one heating chamber 8 is connected to the nozzle 11 of the turbine 12, and the high temperature and high pressure gas vaporized in the heating chamber 8 drives the turbine 12, The turbine 12
drives the required working equipment such as a generator.

The outlet of the turbine 12 communicates with a cooling chamber 13 through a conduit 14, and the vaporized working fluid after driving the turbine 12 is sent to the cooling chamber 13, where it is condensed and liquefied. The outlet of the cooling chamber 13 is connected to a return tank 15 through a conduit 17 having a check valve 16, and the working fluid liquefied in the cooling chamber 13 is stored in the return tank 15. Further, the return tank 15 and the pressure vessel 1 are connected by a return pipe 20 having a check valve 21.

On the other hand, at the outlet of the other heating chamber 22 of the pair of heating chambers 8 and 22, which is connected to the conduit 24,
A pressure introduction pipe 19 equipped with a solenoid valve 18 is connected to the upper end of the return tank 15, and when a predetermined amount of the liquefied working fluid sent from the cooling chamber 13 is stored in the return tank 15 as described above, Pressure introduction pipe 1
By opening the electromagnetic valve 18 of 9 and supplying the high-temperature, high-pressure gas obtained in the heating chamber 22 into the return tank 15, the liquefied working fluid in the return tank 15 passes through the return pipe 20 to the pressure vessel 1. It is starting to flow back inward. After the liquefied working fluid in the return tank 15 is returned via the return pipe 20, the electromagnetic valve 18 is closed to reduce the pressure in the return tank 15, and the working fluid liquefied in the cooling chamber 13 is returned to the tank again. It is stored within 15.

In addition, when supplying the vaporized working fluid in the heating chamber 22 to the return tank 15, the fuel supply device 23 provided in the heating chamber 22 is operated as appropriate by opening and closing the solenoid valve 18 in the pressure introduction pipe 19. If controlled to stop, the amount of fuel consumed for heating the heating chamber 22 can be saved.

〔effect〕

As described above, since the energy supply device of the present invention uses a substance with a low boiling point and small specific heat and latent heat, such as freon or ether, as the working fluid, it is possible to immediately obtain a high temperature and high pressure gas with a small amount of heating. Since it liquefies immediately with a small amount of cooling, it has the advantage that it consumes less energy than conventional steam turbines.

Furthermore, since the working fluid is sealed in the pressure vessel 1 and pre-pressurized, the efficiency of vaporization in the heating chamber 8 is good, and from this point of view as well, the energy consumption can be kept to a minimum compared to conventional steam turbines.
Further, in this invention, as a means for returning the liquefied working fluid stored in the return tank to the pressure vessel, the vaporized working fluid obtained in the heating chamber 22 separate from the heating chamber 8 that supplies the vaporized working fluid to the turbine is used. Since the working fluid is supplied under pressure, the liquefied working fluid in the return tank can be efficiently returned to the pressure vessel, and the vaporized working fluid obtained in one of the heating chambers 8 for driving the turbine can be transferred to the turbine without wasting it. It has the advantage that the turbine can be continuously operated without any trouble.

[Brief explanation of drawings]

FIG. 1 is a circuit diagram showing the configuration of a power generation device according to the present invention. 1: Pressure vessel, 2: Working fluid, 3: Compressor, 4: Water level gauge, 5: Pressure gauge, 6: Safety valve, 7:
Inlet, 8, 22: Heating chamber, 9, 14, 17, 2
4: Conduit, 10, 16, 21, 25: Check valve, 1
1: Nozzle, 12: Turbine, 13: Cooling chamber, 1
5: Return tank, 18: Solenoid valve, 19: Pressure introduction pipe, 20: Return pipe, 23: Fuel supply device.

Claims (1)

[Claims] 1 Equipped with a pressure vessel that uses compressed air to forcefully convey a working fluid that is easily vaporized and liquefied, such as freon or ether, to the outside, and above the pressure vessel, the fluid is discharged from the vessel through a separate conduit. A pair of heating chambers are provided for converting the working fluid into high-temperature and high-pressure gas, and from the one heating chamber,
A turbine driven by high-temperature, high-pressure gas obtained from the heating chamber, a cooling chamber for liquefying the gas after driving the turbine, and a return tank for storing the working fluid liquefied in the cooling chamber. The return tank and the pressure vessel are connected by a return pipe, and the other heating chamber of the pair of heating chambers and the return tank are connected by a pressure introduction pipe with a valve. Power generator.