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124results about How to "High power" patented technology

Method for manufacturing ultrafine powder from polytetrafluoroethylene through irradiation cracking

InactiveCN102672968AHigh powerHigh radiation processing efficiencyGrain treatmentsAirflowPolytetrafluoroethylene
The invention discloses a method for manufacturing ultrafine powder from polytetrafluoroethylene through irradiation cracking. The method is characterized in that polytetrafluoroethylene raw materials are dried; the dried polytetrafluoroethylene raw materials are subjected to low-temperature cold treatment by liquid nitrogen; the polytetrafluoroethylene raw materials subjected to the low-temperature treatment are crushed into powder materials with the particle diameter being 100-1000mum by a crushing machine; the powder materials are subjected to sealed package under the gas protection effect; the packed powder materials are placed into an electronic accelerator irradiation system for irradiation cracking; and the irradiated powder materials pass through an air flow crushing machine to be subjected to air flow crushing and grading, and the ultrafine polytetrafluoroethylene powder with the particle diameter reaching 0.2-3mum is obtained. The method has the characteristics that the preparation process is simple, the control is easy, the energy consumption is low, the process continuous degree is high, the product performance is stable, the prepared ultrafine polytetrafluoroethylene powder has the characteristics that the dispersibility is good, and the agglomeration cannot easily occur. The prepared ultrafine polytetrafluoroethylene powder can be widely applied to the fields of paint, ink, dray powder lubricating agents and space flight and aviation appliances, and the material performance is obviously improved.
Owner:四川久远科技股份有限公司

Generation method and device of microwave signal with differential phase code

ActiveCN104639253ARemove low frequency background noise interferenceHigh powerPhotonic quantum communicationSignal onPhysics
The invention discloses a generation method and device of a microwave signal with a differential phase code, and belongs to the technical field of communication, radar and microwave photonics. The device comprises a laser, a first electro-optical modulator, a second electro-optical modulator, a cascaded Mach-Zehnder interferometer, a balanced photoelectric detector, a microwave signal source and a code signal generator. The method specifically comprises the following steps: performing suppressed carrier modulation on direct current light by using the first electro-optical modulator to obtain two subcarriers; modulating the phase of the code signal on the abovementioned two subcarriers by using the second electro-optical modulator; separating the two subcarriers by using the cascaded Mach-Zehnder interferometer and introducing a proper time delay difference; performing photoelectric detection on two paths of light signals output by the cascaded Mach-Zehnder interferometer by using the balanced photoelectric detector to obtain the microwave signal with the differential phase code. The method and the device have the main advantage that the microwave signal with the differential phase code can be generated, and has the advantages of high carrier frequency, high bandwidth and no low-frequency noise interference.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS

Novel vehicle-mounted natural gas supply system and stable gas supply method thereof

The invention discloses a novel vehicle-mounted natural gas supply system and a stable gas supply method of the novel vehicle-mounted natural gas supply system. The novel vehicle-mounted natural gas supply system comprises an LNG storage tank, a gasification device, a liquid outlet pipe connected between the LNG storage tank and the gasification device, an LNG pump used for extracting liquefied natural gas from the LNG storage tank and a gas pressure driven device driving the LNG pump to work. The LNG pump is arranged on the liquid outlet pipe. The gas pressure driven device is arranged on a pipeline on the downstream of the gasification device and driven through gas pressure of natural gas flowing through the pipeline and connected with the LNG pump through a driving pipeline. The gas pressure driven device of the system is driven through gas pressure of the gasified natural gas in the gasification device to work and drive the LNG pump to extract the liquefied natural gas from the LNG tank, the natural gas flows through the liquid outlet pipe to the gasification device, and therefore the passive circulatory system is formed. According to the system, gas fuel can be stably supplied to an engine, a self-pressurization system is omitted, evacuation loss of natural gas is reduced, and resource waste is avoided.
Owner:成都市珑熙科技有限公司

Fuel cell

The present invention relates to a fuel cell including: a membrane electrode assembly 10 having an electrolyte membrane 17 sandwiched by a fuel electrode 13 and an air electrode 16; a fuel supply part 43 disposed on the fuel electrode side of the membrane electrode assembly to supply a fuel to the fuel electrode 13; a fuel storage part 41 storing the fuel; and a fuel channel 44 leading the fuel stored in the fuel storage part to the fuel supply part. Since a fuel cell can generate electricity for a long time by being continuously supplied with a fuel, the fuel cell serves as a system advantageous as a power source of a portable electronic device such as a portable phone if it can be made compact. Here, if a user keeps touching a high-temperature portion of the fuel cell, he/she may suffer from low-temperature burn or the like, and therefore, some measure such as providing a heat insulator is necessary, but sufficient heat insulation results in excessively large weight and volume, which leads to a problem that the fuel cell is not suitable as a power source of a portable electronic device. The present invention solves the above problem by the structure in which the fuel channel 44 in the fuel cell is formed as a channel heating the fuel by heat generated in the air electrode and leading the heated fuel to the fuel supply part.
Owner:KK TOSHIBA
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