| section Home
Production, Amateur Radio amateur Model aircraft, rocket- Useful, entertaining |
Stealth master
Electronics Physics Technologies invention |
space Mystery
Earth Mysteries Secrets of the Ocean Stealth section Map |
  |
| Use of material is permitted for reference (for websites - hyperlinks) | |||
Navigation: => |
Home / Products Patents / In the section of the catalog / back / |
|
INVENTION
Russian Federation Patent RU2050643
electrochemical generator
Name of the inventor: Brizitski ps.f. .; Davydov IV .; Novitsky E.Z .; Terentyev VY .; Shein IG
The name of the patentee: All-Russian Research Institute of Experimental Physics
Address for correspondence:
Starting date of the patent: 1993.07.06
Usage: transportable in compact electrochemical generators based fuel cells with molten carbonate electrolyte. The inventive generator comprises a fuel cell 1, the device 2 preparation and feeding of fuel, the heat insulating housing 3, the radiation cover 4, a profiled screen 5, the first and second burner 6 and 7, the gas duct 8, a device 9 igniting gas fittings and pipes 10, insert a screw 11, through a coaxial channel 12. The fuel cell system 1 together with the preparation device 2 and the fuel supply is constructed as a converter, arranged inside the radiation heat insulating housing 4. inside the housing 3 mounted display 5 serving as the bottom of the housing of the radiation and the heating device, formed as two burners 6, 7 arranged coaxially one above the other and oppositely oriented outlet nozzles. The heat from the burners accumulates screen walls 5 and 4 radiation casing, screen walls and serve secondary heat source, which provides highly uniform heating of the fuel cell stack. For a more uniform heating of the fuel cell the heated gases are led up via flue 8 formed, for example, by inserting a screw with variable pitch, is situated outside the casing of radiation 4. The fuel burner is used in the second anode gas generated inside the battery.
DESCRIPTION OF THE INVENTION
The invention relates to electrical generators for fuel cells, particularly molten carbonate electrolyte.
Known devices [1 and 2] a fuel cell comprising a cartridge having a plurality of struts fuel cells, each of which comprises a plurality of fuel cell with liquid electrolyte in them, which is prone to crystallization; a sealed protection, comprising a stationary housing surrounding the fuel cell cartridge; Electric heating device mounted on the power source, which is arranged inside the container body. Said device generates a quantity of heat sufficient to create an electrolyte temperature above the crystallization temperature when the fuel cell cartridge is not running and when the heat received by the fuel cell and passed through a strut rack to the heated element. The fuel cell includes a device for supplying fuel and oxidant, and an electrolyte storage unit installed between the anode and the cathode, wherein the electrolyte is concentrated phosphoric acid. Fuel cell assemblies are placed around the central cooling channel, electric heating device placed inside the cooling channel, and a protective casing provided with means for its lifting. At least one electric heating device is disposed between the cartridge and the fuel cell internal surface protection, comprising a container. A heating device are long tubular resistive heaters.
The analogue makes it possible to create an electrochemical generator operating at low temperatures with the exception of the electrolyte crystallization at the generator transported to the filling station. This is achieved with a general electric heater mounted within the cartridge that protects the fuel cell stack. A heater within the cartridge produces uniform heating of the fuel cell. However, to trigger an electric heater requires a source of electrical energy. Furthermore, for heating the phosphoric acid to 150-205 ° C requires a limited amount of heat, which can be obtained by an electric heater.
For electrochemical generators in most cases are typical operating conditions, which are readily available only fuel supplied from the gas well, and an oxidant, which may be the atmospheric oxygen. In the presence of these conditions, the generator must produce electrical energy. Consequently, the conditions can arise when there may be no external source of energy that does not allow the use of electric and reduces the degree of autonomy of the electrochemical generator as electricity is produced only in the process of functioning of the generator.
The prototype of the invention is an electrochemical device [3] comprising a section generating containing electrochemical cells, new fuel gas supply line oxidant gas input line and at least one recirculation channel used fuel, where fuel recirculation channel passes through the generator chamber to combine with a new line fuel injection to form riformiruemoy mixture wherein the reforming chamber comprises an outer part comprising a reformed material inner part, preferably comprising a nozzle mixer and mixer-diffuser, and a middle portion for receiving the spent fuel, which nozzle mixer and mixer-diffuser are preferably located within the reforming chamber and preferably outside the main body of the apparatus to support part of the device, where the streams are raised riformiruemye mixed and then descend prior to contact with the reforming material, and the mixer nozzle can be operated at temperatures below 400 ° C.
The disadvantage of the prototype is to provide a waste heat supplied to the generating section for being heated directly by direct effects on the fuel cells of the heating device, consisting of a mixer nozzle and mixer-diffuser.
The technical result of the invention is expected to provide a cost-intensive heating of the battery cells with the molten electrolyte, a melting point of about 500 ° C, with an increase in the efficiency of the installation by the efficient use of convective heat the anode gas generated in the fuel cell.
The purpose of the invention provide an economical electrochemical generator by providing efficient high-performance heat transfer process.
The aim is achieved as follows. Electrochemical generator comprising a housing which houses the fuel cell, the heating device, the oxidant supply device preparation and feeding of fuel, the fuel battery is placed in the radiation casing, between the casing and the casing is formed radiative flue and the heating device is arranged outside the housing of the radiation.
 |
Differences INVENTION fuel preparation and delivery device is placed between the base of the fuel cell and radiative housing bottom, a heating device is made of arranged coaxially one above the other of the first and the second burners and the screen, the outlet nozzles of burners are oriented oppositely, screen to radiation housing bottom and is installed near the second burner , which inlet nozzle is connected to the internal volume of the fuel cell anode, and the first burner inlet nozzle connected to a source of fuel supply device. Moreover, the screen surface formed by profiled. The flue is formed by inserting a screw. Box made variable pitch adjustment. The drawing shows a sectional electrochemical generator, where the fuel cell 1; 2 fuel preparation and feed unit (converter), 3 heat insulating body, 4 radiation enclosure 5 profiled screen, 6 first burner 7 second burner 8 flue, 9 unit of gas ignition, 10 pipes and fittings, 11 helical insert 12 through coaxial channel. |
Electrochemical generator works as follows
The process takes place within the insulating housing 3. The burner 6 is connected to an external source of fuel supply device (not shown) and is intended for heating the fuel cell battery 1 to the melting point of the electrolyte, and a preparation device 2 and a fuel supply converter, which is fed to the fuel source from an external source (not shown). Ignition of the burner 6 by the device 9 igniting. 6 fuel burner should preferably be a gas (natural gas, biogas, coke, etc.). The products of combustion from the burner 6 to get heated profiled screen 5, where there is an additional afterburning gases. Profiled screen 5 serves as the main heat-screen TV and a heat accumulator. Heat from the heater (burners and the screen) and radiative housing 2 acts on the training device and the fuel pump, configured as a converter. As a result, the converter allocates a fuel gas supplying the fuel cells 1.
the feed gas of the combustion products after the wrapping shaped screen 5 uniformly wash the radiation enclosure 4, and, moving on a spiral in the duct 8 with variable pitch, it is heated evenly. The heated profiled screen 5 and the radiation enclosure 4 are intermediate (secondary) transmitters, perceiving heat by convection and selective emission combustion products (CO, H 2 O, CO 2) and emit its continuous spectrum to heating surfaces located inside the radiation enclosure 4 . this provides a more uniform heating of the elements 1 and 2 are in the radiation casing 4, is eliminated local overheating of thin-walled elements, such as valves and piping 10. Upon reaching the melting temperature of the electrolyte in the fuel cell 1, the second burner 7 begins to receive gas from the anode compartment of the fuel element. 7 burner ignition flame burner 6 is performed, but also by supplying gas to the hot surface of the shaped screen 5. The combustion products from the burner 7 moving along the path of the combustion products of the burner 6. On reaching the optimum temperature of the fuel cell 1, gas burner 6 is stopped. In operation of the electrochemical generator to maintain the operating temperature burner 6 may be periodically switched on and off. The burner 6 is coaxial through passage 12 through which air is supplied to the burner 7. The most preferred form of radiation in the housing 4 round cross section.
The invention provides for uniform heating of the fuel cell and the converter excludes local overheating of the battery cells and the converter, piping arranged inside the housing of the radiation, can be used as a heat source anode gas generated in the fuel battery cells.
The invention can be industrially realized by using known, well-proven technologies. For the implementation of the generator is not required unique equipment and scarce materials. This construction was confirmed these decisions and conclusions in the created and tested prototype
CLAIM
1. Electrochemical generator comprising a housing which houses the battery heating device oxidant feeder preparation and feeding fuel battery, the fuel battery is placed in the radiation casing, between the casing and the casing is formed radiative flue and the heating device is arranged outside the housing of the radiation, characterized in that the fuel preparation and delivery device is placed between the base of the fuel cell and radiative housing bottom, a heating device is made of arranged coaxially one above the other of the first and the second burners and the screen, the outlet nozzles of burners are oriented oppositely, screen to radiation casing bottom and around the second set burner inlet nozzle which is connected to the internal volume of the fuel cell anode, and the first burner inlet nozzle connected to a source of fuel supply device.
2. Generator according to claim 1, characterized in that the screen surface formed by profiled.
3. Generator according to claim 1, characterized in that the gas duct is formed by a helical insert.
4. Generator according to claim 1, characterized in that the helical insert is formed with variable step heights.
5. Generator according to claim 1, characterized in that the burner is formed in the first through the coaxial channel.
print version
Publication date 24.03.2007gg
Comments
Commenting, keep in mind that the content and the tone of your messages can hurt the feelings of real people, show respect and tolerance to his interlocutors, even if you do not share their opinion, your behavior in terms of freedom of speech and anonymity offered by the Internet, is changing not only virtual, but real world. All comments are hidden from the index, spam control.