49results about How to "Reduce medium" patented technology

A thin film magnetic recording head is provided with a tape bearing surface that has magnetically isolated channels while still providing a maximum continuous surface area with which to engage the media. This can be accomplished by providing spaces in the magnetically permeable thin film that are large enough to prevent cross-talk between the channels, but small enough to prevent significant interference with the moving media. Alternatively, magnetically impermeable thin film spacers can be provided to magnetically isolate each of the channels. The spacers are generally even with the magnetically permeable thin film so as to provide a continuous media-bearing surface.

A sealing structure in a fuel cell and/or an electrolyzer (particularly a solid-oxide fuel cell and/or a solid-oxide electrolyzer) is arranged between neighboring separator plates of a cell stack. The sealing structure is constructed in at least two layers, including at least one insulating layer and at least one sealing layer.

The invention relates to a leakage-free reflow piston pump as a reciprocating pump used in liquid transportation, in particular to a leakage-free reflow device used in the piston pump. The structure is that: a plurality of spacing rings are arranged between inner side packing of the piston pump and the outside packing; a groove is arranged on internal surface and external surface of the spacing ring; a plurality of round through holes are evenly distributed on the bottom of the groove; a plurality of pipe joints are arranged at both ends of a reflow pipe and are respectively connected with a pump body and an inlet pipe of the pump corresponding to the installation position of the spacing ring; leaking mediator from the inner side of the piston pump is transported to the inlet pipe of the pump by a close loop composed of a spacing ring and the reflow pipe. The leakage-free reflow piston pump as a reciprocating pump used in liquid transportation has an advantage that the mediator in the reflow pipe is inhaled into the working cavity of the piston pump when the piston pump is working, so the problem of mediator leakage outside the pump due to wear of the seal packing is effectively prevented.

The invention provides a power station silent energy-saving type heat dissipation system. The power station silent energy-saving type heat dissipation system comprises a radiator, a temperature sensor, a radiator water inflow pipe, a radiator water return pipe, a box type unit, at least one heat dissipation fan, a heat dissipation draught fan and a draught fan controller. The radiator is arrangedoutside the box type unit, the radiator is connected with the box type unit through the radiator water inflow pipe and the radiator water return pie to form a circulation loop, and the circulation loop is provided with a flowing circulation cooling medium. The temperature sensor is arranged at the joint of the radiator and the radiator water inflow pipe, and the heat dissipation fans are connectedwith the heat dissipation draught fan and all arranged in the radiator. The temperature sensor and the heat dissipation draught fan are connected to the draught fan controller. The purposes of silence and energy saving of the power station heat dissipation system in normal environments are achieved, and the efficient heat dissipation requirements at high temperature are met.

The invention discloses a multifunctional horizontal natural gas separation filter belonging to the technical field of filter devices. The multifunctional horizontal natural gas separation filter comprises a cylinder, a blind plate and a blind plate locking mechanism, and is characterized in that latch plate sliding cavities are formed in one side, back on to a separation filter cavity, of the blind plate; the blind plate locking mechanism comprises latch plates, a center disk shaft, a center disk, a traction plate and a center disk operation handle; a center disk sleeve is fixed on one side, back on to the blind plate, of the center disk and is perpendicular to the center disk; a cylinder depressurizing response mechanism is arranged on the wall body of one side, back on to the separation filter cavity, of the blind plate, and is matched with the center disk; a clean hole is formed in the circumferential direction of a blind plate matching opening and in the position corresponding to a blind plate locking groove; a sealing screw is arranged on the clean hole in a matching manner. The multifunctional horizontal natural gas separation filter has the advantages that the structure is simple; the ideal effect of latching all the latch plates and the blind plate locking groove can be enduringly kept; the blind plate is prevented from being deformed; when natural gas exists in the cylinder, the blind plate cannot be opened; the blind plate locking groove can be quickly and conveniently cleaned.

The invention provides an oven. The oven comprises an oven body with an opening in one side, an oven door, an upper liquid delivery pipe, a lower liquid delivery pipe, an upper ventilation pipe, a lower ventilation pipe and a vacuum pipe, wherein the oven body comprises an outer wall, an inner wall arranged in the outer wall in a sleeving manner, and a sandwich layer which is located between the outer wall and the inner wall and is spaced from the outer wall and the inner wall; an airtight outer hollow layer is enclosed by the outer wall and the sandwich layer, and an airtight inner hollow layer is enclosed by the sandwich layer and the inner wall; one side of the oven door is movably connected with the oven body, the oven door can be in seal fit with the oven body, and an inner space is formed by the oven door and the inner wall; the upper liquid delivery pipe and the lower liquid delivery pipe are separately located at the two ends of the oven body and communicate with the inner hollow layer; the upper liquid delivery pipe, the lower liquid delivery pipe and the inner hollow layer are used for the circulation of heat conducting liquid; the upper ventilation pipe and the lower ventilation pipe are separately located at the two ends of the oven body and communicate with the inner space, and the upper ventilation pipe, the lower ventilation pipe and the inner space are used for the circulation of dry air; and the vacuum pumping pipe communicates with the outer hollow layer.

The invention discloses a preparation method of a high anti-corrosion coating on the surface of a sintered Nd-Fe-B magnet. The method comprises the steps that a machined and shaped Nd-Fe-B magnet is preprocessed, the preprocessed Nd-Fe-B product is soaked with a pre-processing solution, and the pre-processing solution is prepared by mixing distilled water, a coating agent and an accelerator; priming coating of a ZnAl coating solution is performed on the surface of the soaked Nd-Fe-B magnet, and the Nd-Fe-B magnet with the ZnAl coating obtained after priming coating is obtained; top coating ofa Al-enriched coating solution is performed on the surface of the Nd-Fe-B magnet obtained after priming coating, and the high anti-corrosion Nd-Fe-B magnet is obtained. Due to two times of coating processing, the porosity between the magnet and a corrosive medium is effectively lowered, the binding force between the coating and the magnet is improved, and the sintered Nd-Fe-B magnet has the good corrosion resistance. Due to the ZnAl coating obtained after priming coating, the quantity of a medium entering the deeper layer of the coating is greatly reduced, and therefore the high temperature and high pressure resistance and the ageing resistance of the magnet are greatly improved.

The invention discloses a low-nitrogen gas-fired boiler synergy and white smoke eliminating integrated heat supply system and a regulating and control method. The system comprises a boiler room groupcontrol system and at least one heat supply subsystem, wherein each subsystem comprises a gas-fired boiler, a low-nitrogen combustion engine, a gas calorific value detector, an air blower, a horizontal flue, a vertical flue, a flue gas condensation heat energy recovery device, an air preheater, a flue gas-air uniform distribution mixer, an air duct, a flue gas sampling analyzer, a temperature andhumidity sensor, a flue gas white eliminating and defogging section, a flue gas heating uniform distribution section, a boiler subsystem control module and the like. According to the system and the method, not only can the corrosion of backflow flue gas condensation on the air blowers, the low-nitrogen combustion engines and the like after the low-nitrogen transformation of the gas-fired boilers be effectively solved, but also the emission of white smoke mist is effectively reduced, and on the premise of ensuring that a boiler room supplies heat as required, through the overall operation regulating and control method, the high-heat efficiency operation of the boilers is realized, the overall gas utilization efficiency of the boiler room is further improved, and the energy waste and pollutant emission are reduced.

A method is disclosed for concentrating sample constituents and for multiplying nucleic acids from a biological sample which are containing in the sample constituents. The nucleic acids are amplified on the same filter on which the sample constituents are also separated off.

The invention discloses a refining furnace decarburization end point detection method. The refining furnace decarburization end point detection method comprises the following steps that 1, flue gas components and flue gas flow in a refining furnace are acquired, and the total decarburization amount is calculated; 2, the content of each element in a charging raw material of the refining furnace and the target content of each element in molten steel are acquired, and the total amount of carbon elements added in the vacuum decarburization treatment process of the refining furnace is calculated; 3, the target carbon content of the refining furnace after vacuum decarburization is calculated according to the target molten steel carbon content and the total amount of the carbon elements added in the vacuum decarburization treatment process of the refining furnace; and 4, the current molten steel carbon element content is calculated according to the carbon element content in alloy added in the vacuum decarburization treatment process, the total decarburization amount and the mass of the molten steel entering the station, and whether vacuum decarburization of the refining furnace is finished or not is judged according to the current molten steel carbon element content and the target carbon content. The refining furnace decarburization end point detection method can predict the carbon content of the molten steel in real time and judge a decarburization end point.

The invention discloses a vacuum flat plate heat collector and a manufacturing method and equipment thereof, and belongs to the field of solar energy application. The popularization of a vacuum pipe heat collector enables a flat plate heat collector to be marginalized, so that people know the importance of vacuum heat preservation in solar low-temperature heat collection application. A blow-up type plate core is arranged in the middle of a vacuum glass flat box, supporting columns are arranged between the plate core and the glass box, a heat absorption coating is manufactured on the front faceof the plate core, an inlet pipe nozzle and an outlet pipe nozzle are adjacent on the center line of the back face of the plate core and are vertically led out of a round hole of the same glass backplate, and the problems of heat stress and sealing are well solved. The heat collector in which the ultra-thin plate core is arranged in the vacuum glass box with the homogeneous integrated supportingcolumns is small in heat storage amount, fast in starting and high in heat collection efficiency, and is combined with a building and mounted on a steel structure to form a solar wall which saves energy and generates energy, and the building energy consumption can be effectively reduced. The vacuum flat plate heat collector is combined with a heat pump or a medium-temperature heat collector to produce steam as solar industrial energy, so that the device has a wider application prospect.

The invention discloses a novel mode-locked laser, and relates to the technical field of lasers. The device comprises a laser chip; one side of the laser chip is provided with a VBG grating, one side of the VBG grating is provided with a fast axis collimating lens, and one side of the fast axis collimating lens is provided with a slow axis collimating lens; the laser chip comprises an active layer, the rear end face of the laser chip is plated with a high-reflectivity thin film, the front end face of the laser chip is plated with an antireflection film, and the high-reflectivity thin film corresponds to the VBG grating. The volume grating is arranged on one side of the laser chip, the laser chip emits light, and the light is partially reflected back to the laser chip by the volume grating, so that the emission wavelength of the laser chip is single and stable, and the laser which is output and coupled by the volume grating has the advantages of small output line width and high temperature stability; the structure is compact, medium in the laser cavity is less, and the property is more stable.

The invention relates to a chemical reaction temperature control adjusting system and method. The system comprises a cold water pool, a hot water pool, a temperature adjusting pool, a reaction kettle and a control system, the outer layer of the reaction kettle is a temperature control medium layer; the control system comprises a first temperature sensor, input equipment, a second temperature sensor, a controller, a water pump, a liquid crystal display and a three-position four-way electromagnetic valve; the method comprises the following steps: 1, inputting the optimum reaction temperature of the reaction kettle to the controller through the input equipment; the first temperature sensor senses the temperature in the temperature control medium layer of the reaction kettle reaction; the second temperature sensor senses the temperature in the temperature adjusting pool; 2, the controller calculates a reaction error temperature; and thirdly, the controller controls the three-position four-way electromagnetic valve and all the water pumps. According to the invention, fine adjustment can be carried out; more energy and media are saved; automation is achieved, and manpower is saved.