56 results about "Liquid propane" patented technology

The present invention provides a safer all-around radiation heating assembly than similar traditional heaters. As typical with traditional heaters, a shroud is used to surroundably cover a portable liquid propane tank. To replace the portable liquid propane tank, the shroud must be continuously raised to a predetermined height while a service person accesses the propane tank. There is a danger that if and when the shroud drops, a spark could be created resulting in igniting highly flammable escaped propane gas. The present invention overcomes dangers associated with the traditional heaters by eliminating the spark creation danger and by introducing a ventilation system to allow any leaked propane gas to escape away from the heater.

A method and system are provided for extracting propane vapors from a propane storage tank, and condensing the extracted vapors to form a useable liquid propane product.

A mobile portable steam table with a chafing dish system heated by liquid propane gas (LPG), to keep previously cooked meats and vegetables warm and moist through a water medium reservoir intimately involved directly beneath and holding the chafing dishes.

The nanofabrication of a hydrogen gas nanosensor device from single straight and branched, tripod shaped ZnO nanorods using in-situ lift-out technique, performed in the chamber of a focused ion beam (FIB) system is disclosed. Self-assembled ZnO branched nanorods have been grown by a cost-effective and fast synthesis route using an aqueous solution deposition method and rapid thermal processing. The properties of the ZnO nanorod structures were analyzed by X-ray diffraction, scanning electron microscopy, energy dispersion X-ray spectroscopy, transmission electron microscopy and micro-Raman spectroscopy. High quality ZnO nanorods were obtained with a 90% success rate for building nanodevices. The fabricated nanosensor can gauge 150 ppm hydrogen gas in the air at room temperature. The nanosensor has selectivity for other gases such as oxygen, methane, carbon monoxide and liquid propane gas. The ZnO nanorod sensors of the present invention also operate at low power of less than 5 microwatts.

A propane bottle recycler comprising a bottle station, first and second propane collection tank, compressor, liquid propane storage tank, bottle crusher, and crushed bottle storage compartment. The bottle station comprises a bottle manifold and bottle station frame, and the bottle manifold is pivotally connected to the bottle station frame. Propane bottles are placed in receiving cavities in the bottle manifold and held in place with cam levers, and the bottle manifold is raised to a vertical position. The propane drains out of the propane bottles, through propane hoses into a propane manifold, into the first and second collection tanks, and to a compressor, which repressurizes the propane. The propane is then stored in a liquid propane storage tank. The used propane bottles are crushed by the bottle crusher and stored in the crushed bottle storage compartment.

Systems and methods are disclosed for a tamper resistant RFID (radio frequency identification) tags that overcome the problems existing with previous RFID tags. The tamper resistant RFID tags described herein are particularly useful for tracking of liquid propane gas (LPG) containers and / or other types of containers or objects. Removal of the RFID tag, after it is attached, will destroy and / or render inoperable the RFID transponder within the tag so that removal and re-use is not practical or possible. One key feature of this tamper resistant RFID tag is the use of adhesive materials with differing adhesion characteristics with respect to the container material (e.g., metal) and the housing for the RFID tag (e.g., plastic) so that the RFID tag will tend to be destroyed when removal is attempted.

A mobile cooking apparatus is configurable and automatically controlled to regulate the cooking temperature. The cooking apparatus is configurable as to fuel source (liquid propane or charcoal), and the temperature control is adaptable to the selected fuel. Additionally, smoke flavor may be optionally used, and various adjuncts such as a rotisserie, grill and deep fryer may be included.

The invention discloses a propane pre-cooling mixed refrigerant liquefaction system applied to a base-load type natural gas liquefaction factory. The system comprises a pre-cooling cold box, a liquefaction cold box, a copious cooling cold box, a propane pre-cooling circulation mechanism and a mixed refrigerant liquefaction copious cooling circulation mechanism. Due to the adoption of the propane pre-cooling mixed refrigerant liquefaction system, natural gas which is qualified after pretreatment can be introduced into the mixed refrigerant liquefaction copious cooling circulation mechanism to be further cooled by a mixed refrigerant after being precooled by the propane pre-cooling circulation mechanism and is finally introduced into a liquefied natural gas (LNG) storage tank through throttling; the propane pre-cooling circulation mechanism and a flow channel of the pre-cooling cold box are subjected to heat transfer through liquid propane in a propane gas-liquid separation tank by a thermal siphon principle, and propane which is subjected to heat transfer and is gasified in the pre-cooling cold box is returned to a corresponding inlet of a propane compressor for gradual compression until a final-stage outlet is reached so as to finish a circulation process; and when used for liquefying natural gas, the system provided by the invention is convenient to operate, is safe and reliable and has high efficiency and high adaptability, equipment investment is reduced, flow control automation is improved, and driving time is shortened.

A vaporizer is connected to a liquid propane supply. The vaporizer contains a helical coil immersed in a bath. A pressure regulator at an inlet to the coil reduces the pressure and vaporizes part of the propane. A burner connected to the outlet of the vaporizer is used to heat the bath. Part of the vapor is returned to the supply to pressurize the supply. The main part of the vapor from the outlet is used to power a fuel powered device.

The invention discloses a method for preparing a negative electrode material lithium titanate of a lithium battery through spray freeze drying. The method comprises the steps of weighing ingredients of a Ti compound, a Li compound and a metal oxide M at a stoichiometric ratio, dispersing the ingredients into distilled water, carrying out sanding, carrying out pelletizing through spray freeze drying by employing liquid nitrogen and liquid propane as refrigerants, and then burning to obtain an M-doped and modified lithium titanate material. The method is simple in process and high in controllability; the obtained material is excellent in high-rate capability and can be suitable for industrial production of the lithium titanate negative electrode material.

A method for adjusting a fuel composition to increase liquid fuel heat tolerance is described that includes directly injecting a first fuel (such as liquid propane) to the engine via a fuel rail when a fuel temperature falls below a threshold; and in response to a fuel temperature greater than a threshold, directly injecting a liquid mixture of the first fuel and a second fuel (such as gasoline) via the fuel rail. For example, gasoline may be added in sufficient amounts to the liquid propane to ensure the mixture remains a liquid during engine operations. In this way, the amount of gasoline introduced into the propane may be based on an extent of the fuel temperature above the threshold which further acts to extend the operating range of the first fuel.

Various embodiments utilize a novel approach to igniting the natural gas flame that is emitted from the end of the torch. According to one embodiment a rotary diverter within the ignition bell of the GrillGun is used to shunt a portion of the higher velocity gas flow to an area in the bell where the ignition spark is out of the direct burning gas stream. According to another embodiment the ignition bell has a plate that largely covers its open end that reduces the length of the flame that is emitted and focuses it. Still another embodiment has a check valve that operates to stop the flow of gas to the gas conduit when the GrillGun is dropped or tipped over or liquid propane is otherwise presented into the check valve by any other means.

A direct-fired, propane powered steam generator is provided with a carburetor, which receives vaporized propane from a converter arrangement which converts liquid propane to vapor, receives pressurized air and feeds a mixture of vaporized propane and air into the combustion chamber of the steam generator. The amount of air delivered to the carburetor is variable, with the amount of vaporized propane entering the carburetor being determined by the position of a metering valve which varies in accordance with the amount of air passing through the carburetor. The converter arrangement receives liquid propane and is coupled to process water heated in the water jackets of the combustion chamber and adjacent structure, the converter arrangement being designed so that heat from the water is transferred for effecting vaporization of the liquid propane. The flow of liquid propane for combustion in a pilot burner and for combustion in the main combustion chamber may be controlled using various arrangements of solenoid-operated lock off valves and / or vacuum-operated fuel lock off filters and / or air pressure balance control valves.

A valve assembly cleaning device includes a conduit fluidly couples the liquid propane regulator and valve assembly to a propane tank. The cleaning system includes a first tube selectively coupled to the conduit such that the first tube is in fluid connection with the conduit and propane may flow from the propane tank to the assembly flows through the first tube. A container has a valve cleaning fluid therein. The container is in fluid communication with the first tube. Cleaning fluid may enter the conduit such that the valve assembly is cleaned by the cleaning fluid.

A fuel cylinder for use in fueling vapor-powered machines and devices is claimed. The fuel cylinder contains a fuel vapor withdrawal pipe that bends upward towards the top edge of the cylinder when the cylinder is in its position of use, for example, the horizontal position if the tank is used horizontally. A liquid splash guard surrounds the inlet of the fuel vapor withdrawal pipe to protect the inlet from splashing of liquid propane in the cylinder. A brace connects to the fuel vapor withdrawal pipe to stabilize the fuel pipe during high vibration use. In one embodiment, the splash guard and brace are welded to the internal surface of a joggle in the rim of the upper head portion of the cylinder before the upper head portion and lower head portion of the cylinder are mated and welded together.

The invention relates to the storing-remote transmission integrated lighter for natural gas hydrates, comprising: filling the liquid propane cooling agent into a gas storing warehouse; the heat-insulating wall of said gas storing warehouse connects a cooling system or a heat distribution system by a gaseous propane transmission pipe; in the gas storing warehouse, air tank made from seamless steel pipe is mounted, and a many-hole pipe made from a steel pipe whose diameter is 5-50 mm is inserted to the bottom of air tank from its open, while the rate of opening holes of this many-hole pipe is 5-95 %, the bore diameter is 1-10 mm, and the length equals the inner cavity of air tank; the open of air tank is through to the gas distribution pipe by the many-hole pipe. Said invention integrates the storing and remote transmission of natural gas hydrates in one lighter, and the operation is simple and safe. It can replace the high pressure spherical tank when reach the destination, so the producing and storing cost is reduced.

A fuel supplying system of a liquid propane injection (LPI) engine, may include a fuel tank for storing fuel, a main fuel pump connected to the fuel tank and disposed at the exterior of the fuel tank, a fuel supply line connecting the main fuel pump and the engine to supply fuel from the main fuel pump to the engine, and a fuel return line connecting the engine and the interior of the fuel tank to return fuel from the engine to the interior of the fuel tank, wherein a sub-fuel pump is provided to the interior of the fuel tank and connected to the fuel supply line through a sub-fuel pump connecting pipe, the sub-fuel pump being operated when a predetermined condition is satisfied.

Closure modules are coupled to and enclose ends of a multi-cell pressure vessel, especially a multi-cell pressure vessel having arcuate outer wall segments connected by internal web segments that define a plurality of cells in the pressure vessel. The closure modules each have an arcuate surface portion and at least one interfacing surface portion integrally connected at a marginal extent thereof with a marginal extent of the arcuate surface portion. The arcuate surface and interfacing surface portions define a closure module chamber and have peripheral edges. The arcuate surface portion of one of the closure modules abuts contiguously against an interfacing surface portion of an adjacent one of the closure modules. The closure modules are particularly useful for use with multi-cell tanks and vessel bodies, especially tanks and vessels suitable for storing liquid propane.

A cart is clamped to a tank for liquid propane gas and has a height which is a minor fraction of the height of the tank. In projections of the cart and the carriage on a plane normal to the longitudinal axis of the tank, no more than a minor fraction of the projection of the cart is located outside the projection of the tank.

The invention discloses a technical field related to liquid rocket engines of aerospace propulsion systems, specifically a nitrous oxide and propane rocket engine torch ignition device, which is composed of nitrous oxide electromagnetic valve seats, igniter seats, and nitrous oxide catalytic decomposition Chamber, propane solenoid valve seat, outer core body, inner core body, flow stabilizer, propane liquid collection chamber, upstream propane injection hole, downstream propane injection hole, nitrous oxide liquid collection chamber, nitrous oxide injection Orifice, torch combustion chamber, nitrous oxide inlet, and propane inlet. The decomposition product of the catalytic decomposition chamber forms a primary torch with upstream propane, and the nitrous oxide from the radial injection hole forms a secondary torch with downstream propane, which is used for The rocket motor ignites and starts. The invention can obtain a stable and high-energy ignition torch, and can realize reliable ignition and start of a rocket engine combined with nitrous oxide and propane propellant.