99results about How to "Small volume requirement" patented technology

The invention relates to a technology and a device system for producing dimethyl oxalate by high-pressure carbonylation of industrial synthesis gases and producing ethylene glycol through dimethyl oxalate hydrogenation. The technology comprises the following steps: adopting industrial NO, O2 and methanol as raw materials for an esterification reaction to produce methyl nitrite; adopting industrial CO and methyl nitrite for a carbonylation reaction in a plate reactor to produce carbonylation products, which mainly include dimethyl oxalate and dimethyl carbonate; separating the carbonylation products to obtain dimethyl carbonate products; subsequently adding hydrogen into dimethyl oxalate in the plate reactor to produce ethylene glycol products; conducting the coupling recovery treatment on waste acids in the esterification reaction and purge gases in the carbonylation reaction for recycling. The device system comprises an esterification reaction system, a carbonylation reaction system, a coupling recovery system for purge gases and waste acids and a hydrogenation reaction system. The technology has the characteristic that device consumption is remarkably reduced, and particularly the nitric acid waste liquid recycling and purge gas recycling technologies as well as the separation technologies thereof are highly coupled; recycling of the raw materials in reaction waste gases is realized, and the effect is remarkable.

The invention discloses a tray, a tray assembly, a battery pack assembly and a vehicle. The tray comprises a bottom plate and a frame, wherein the bottom plate comprises a plurality of sub bottom plates, runners are arranged in at least one part of sub bottom plates in the plurality of sub bottom plates, a battery module is suitably arranged on the sub bottom plates provided with the runners, and the frame is arranged at a peripheral edge of the bottom plate. By the tray, the volume requirement of a cavity for accommodating the battery module can be reduced, the runner arrangement is simpler, a water-cooling mode and an air-cooling mode can be simultaneously compatible, particularly in the water-cooling mode, a cooling liquid can directly flows outwards even the cooling liquid is leaked, short circuit of the battery module is prevented, the battery module is safer to use, and a relatively good protection effect can be played on the battery module.

The invention provides a side flow test paper strip for serum marker luminescence detection based on near infrared excitation and emission and preparation and use methods thereof, and relates to a side flow test paper strip and preparation and use methods thereof. The technical problems of heat damage of the existing detection material on biomolecules and high background signals can be solved. Theside flow test paper trip consists of a polyvinyl chloride support back plate, a detection pad, a combination pad, a sample pad and an absorption pad, wherein the combination pad is loaded with an upper conversion beta-NaYF4:Yb,Tm@NaXF4 nanometer crystal probe combined with antibodies and an upper conversion beta-NaYF4:Yb,Tm@NaXF4 nanometer crystal probe combined with mouse IgG. The preparation method comprises the following steps of 1, preparing a core; 2, coating a shell; 3, assembling a luminous probe; 4, assembling the side flow test paper strip. In the use process, the laser is used forirradiating the detection line to detect the emission spectrum; the detection range is 0.05 to 50ng/mL; the detection limit is 0.02ng/mL; the side flow test paper strip can be used in medical care detection.

The invention provides a silicon carbide MOSFET device and a manufacturing method thereof. The invention improves device structure design and finally integrates Schottky contact or heterojunction contact with rectifying characteristics on the basis of traditional silicon carbide UMOSFET structure. At that same time of optimize the basic characteristics of the traditional silicon carbide UMOSFET structure, the improvement realize the integration of multi-sub rectifier devices, greatly optimizes the work performance of the third quadrant of the device, and in addition, the invention also optimizes the dynamic performance of the device, and has shorter switching time; In addition, the invention also has the characteristics of simple process and easy realization.

The invention provides a silicon carbide MOSFET device and a manufacturing method thereof. Discontinuous gate structures are formed on the basis of the common silicon carbide MOSFET structure, two silicon carbide deep P injection regions are introduced between the two gate structure and metal or polycrystalline silicon is introduced between the two silicon carbide deep P injection regions. The metal or the polycrystalline silicon directly contacts the silicon carbide N-epitaxy so as to form the Schottky contact or the heterojunction contact having the rectification characteristic. The improvement greatly optimizes the conventional silicon carbide UMOSFET basic characteristics, realizes integration of multiple sub-rectifiers and greatly optimizes the third quadrant performance of the device. Meanwhile, the silicon carbide MOSFET device has the characteristics of low Miller capacitance, simple process and easy implementation.

The invention discloses a pressure-storing and energy-saving washing tank and a pressure-reducing water drain valve. A pressure-reducing valve element is sleeved in a pressure-reducing cover to form the pressure-reducing water drain valve 2 and mounted on a water outlet 1B of a water tank. A valve rod 2C is connected with the pressure-reducing valve element 2A or is provided with a labor-saving lever mechanism 5. A permanent magnet or flowing pressure or electromechanical valve starting device is connected with the pressure-reducing valve element through the valve rod for indirect starting. A flow-storing flexible bag 7 and an air inlet and outlet hole or an air regulating valve can be arranged at the inner end of the water tank. A slow-draining and water-storage-supplement chamber 9 can be arranged at the outer end of the water outlet. The pressure-reducing valve needs few starting power and can directly start or indirectly start by the aid of a low-energy-consumption power device. The problems that existing pressure-storing washing tanks and straightway water drain valves are large in stress, difficult in starting, large in water drain pressure drop, high in cost and the like are solved. The pressure-reducing water drain valve has the advantages of low starting power, large water drain pressure, large flow, small pressure drop, capability of supplementing water storage, cleanness and water saving in washing, low cost, maintainability, low usage cost and the like.

The invention discloses an FP pressure sensor based on a low-temperature coupling effect of a photonic crystal fiber. The FP pressure sensor comprises the photonic crystal fiber, a quartz capillary tube and a polymer film, the welding surface of the photonic crystal fiber and the quartz capillary tube and the inner surface of the polymer film form two parallel reflecting surfaces of an FP interferometer. When light in the photonic crystal fiber encounters the two reflecting surfaces, reflected light is generated, the two beams of reflected light interfere in the photonic crystal fiber to generate an interference spectrum, when the cavity length of the FP interferometer changes along with the measured pressure, the changing optical path difference between the two beams of reflected light causes the movement of the interference spectrum, and by detecting the movement amount of the interference spectrum, the change of the measured pressure is obtained. The FP pressure sensor is suitable for measuring the conditions that the environment temperature change is large, the temperature change needs to be compensated, and the measured water pressure is small, meanwhile, the requirement for high precision is met, the manufacturing process is simple, and the size is small.

The invention provides a selectable error amplifier and voltage comparator multiplex circuit. The multiplex circuit comprises a bias voltage generation circuit, an input stage load circuit, an error amplifier output circuit and a voltage comparator output circuit, wherein the bias voltage generation circuit provides a bias voltage for the input stage load circuit, the output end of the input stage load circuit is connected with the error amplifier output circuit and the voltage comparator output circuit, and the error amplifier output circuit or the voltage comparator output circuit is gated through a control signal. According to the multiplex circuit, selection of circuit functions is achieved through the control signal, the input stage load circuit and the error amplifier output circuit form an error amplifier structure, and when the control signal is at a low level, the input stage load circuit and the voltage comparator output circuit form a comparator structure. When applied to a multi-model modulation type DC-DC converter circuit, the multiplex circuit removes the conflict between the chip area and the conversion efficiency of the converter circuit.

The invention provides a method for conducting line-by-line milling on a rotor tooth profile surface of a large screw compressor along a spiral line and relates to screw compressors. The method comprises the steps that firstly, a disk-type arc milling cutter is selected, and the arc radius r of the disk-type arc milling cutter is determined; secondly, rotor profile line value points are selected according to the initial line-by-line step lengths of the spiral line; thirdly, the envelope path of the disk-type arc milling cutter for machining the rotor profile is calculated according to the spiral surface forming principle, and an initial position point of the envelope path is determined; fourthly, a spiral groove is machined line by line along the spiral line; fifthly, other spiral grooves are machined in sequence until all the spiral grooves are formed. Only the existing common disk-type arc milling cutter and a numerically-controlled screw rotor milling machine are needed; the relative machining positions of the milling cutter and the screw rotor are deduced by establishing a segmented milling mathematic model; the disk-type arc milling cutter can be mounted on the numerically-controlled screw rotor milling machine to conduct line-by-line milling on the large screw rotor through the existing numerical control technology. The method has the advantages that precision is high, cost is low, and the existing small machine tool can be used for conducting numerical control milling on the large screw rotor.

The invention provides a silicon carbide MOSFET device and a manufacturing method thereof. The invention aims at a conventional silicon carbide UMOSFET structure, and proposes a multi-sub rectifier device integration mode, and includes implementation methods of Schottky contact and Si/SiC heterojunction contact. While effectively improving the basic characteristics of the traditional carbonize UMOSFET and optimizing the long-term application reliability of the device, the invention realizes the integration of the multi-sub rectifier devices, thereby greatly optimizing the work performance of the device in the third quadrant. The implementation process of the structure is compatible with the traditional silicon carbide UMOSFET process, and has the characteristic of easy fabrication.

The present invention provides a transverse groove-type MOSFET device, belonging to the technical field of semiconductor power devices. A polycrystalline silicon region or a Schottky contact metal region is formed at the circumference side of the gate structure to allow polycrystalline silicon region or the Schottky contact metal region and the drift region to form heterojunction or Schottky contact with rectification characteristics. Because the heterojunction or Schottky contact is multiple sub devices and is lower in conduction pressure drop compared to a traditional parasitic diode, the reverse recovery characteristic of the device can be optimized, and an excellent three-quadrant on-state performance is achieved; and compared to an external antiparallel diode mode, the size of the electrical power system can be significantly reduced, the package cost is reduced, interconnection lines are reduced, and the parasitic effect of the interconnection lines is reduced so as to improve thereliability of the system. Aiming at the problem that the device gate medium electric field is too high, the optimization is design to improve the long application reliability performance of the device. Besides, the preparation method of the device is simple and controllable and easy to achieve, and promotes the popularization of the semiconductor power device in the many actual applications.

The invention discloses a manufacturing method for a machine vision filter. The manufacturing method comprises the following steps: A, cutting, i.e., cutting a glass substrate according to the required size of equipment, wherein the adopted glass substrate is a colorless glass substrate; B, cleaning, i.e., placing the cut glass substrate in pure water to soak and performing oscillation cleaning by using ultrasonic wave; C, drying, i.e., drying the cleaned glass substrate by using an air drying method; D, plating a main film, i.e., plating the main film by using an ion beam assisted electron beam evaporation coating technology; E, plating a secondary film, i.e., plating the secondary film on the other face of the glass substrate by using the same process in the step D after plating the main film; and F, post-processing, i.e., grinding the edge of the plated glass substrate by using an inner circle cutting machine. According to the manufacturing method, the cost for manufacturing the machine vision filter is greatly reduced by using a series of scientific manufacturing processes, and the signal-noise ratio of the machine vision filter has reached the level of 1,000:1.

A spool valve, for a motor vehicle's automatic transmission, having a housing and an axially movable valve spool in a guide recess of the housing, including at least one radial inlet connection and one radial outlet connection spaced axially apart therefrom, and a working connection on the front face, at least one first control opening connected to the inlet connection and one second control opening spaced axially apart therefrom and connected to the outlet, and one third control opening situated axially between these two and connected to the working connection being present on the guide recess, the control openings being hydraulically cooperate-able with one first and second control section on the valve spool, and a connection channel extending axially in sections being in the housing, connecting the third control opening to the working connection.

The housing includes a section made of plastic, in which the connection channel is formed.

SUBSTITUTE SPECIFICATION 12

The invention discloses a lateral flow test strip for serum marker luminescence detection based on near-infrared excitation and emission as well as a preparation method and an application method of the lateral flow test strip, which belongs to the field of immunological detection and aims to solve the technical problems that an existing nano material for biological detection has optical damage toorganisms and has high detection background signal interference. The lateral flow test strip consists of a polyvinyl chloride supporting back plate, a detection pad, a combination pad, a sample pad and an absorption pad, wherein the combination pad is a down-conversion [alpha]-NaLnF4:Nd,Yb@CaF2/NaLnF4 nanocrystalline probe loaded with a combination antibody, and a down-conversion [alpha]-NaLnF4:Nd,Yb@CaF2/NaLnF4 nanocrystalline probe combined with mouse IgG. The lateral flow test strip provided by the invention has a wide detection linear range and strong applicability, has low requirements onthe volume of a to-be-detected sample, short in required detection time, capable of realizing bedside detection and high in flexibility; and the lateral flow test strip does not need professional personnel to operate and can be used for medical detection.

The invention discloses a method for separating and recovering chloroperoxidase (Chloroperoxidase, EC 1.11.1.10, CPO), which utilizes co-precipitation and redissolution method, that is, hydrophilic polymer polyethylene glycol is precipitated and entrained at high salt concentration CPO molecules, so as to enrich the CPO protein concentration, and then use the two-phase extraction technology to efficiently separate and recover high-purity CPO, that is, to separate different proteins by using the different distribution coefficients of the separation target product and impurities in the hydrophilic polymer phase solution. The present invention proposes reasonable and feasible two-phase CPO extraction and purification conditions through research, summarizes the separation technology of micro-content bioactive substances, solves or improves the extraction interference, low recovery rate, high product price, and purification cycle existing in the current CPO production process. Long, can not scale production and other issues.

The invention provides a computer system, a wireless terminal and an information processing method. Communication with a host can be completed in a wireless mode, input instructions can be wirelessly sent to the host for processing, wireless display signals and wireless audio signals of the host can be received, electronic devices of a central processing unit, a graphic processing unit, a memory, a hard disk and the like can be omitted in the wireless terminal, and the cost and the weight of the wireless terminal are reduced. The wireless terminal can present good performance by utilizing high-performance central processing unit, graphic processing unit, memory, hard disk and the like of the host. Besides, the host has no high requirement for volume, so that the host does not need to be highly integrated, can achieve modular assembly like a common desktop computer and facilitates realizing upgrade.

The invention provides a heart valve which comprises a valve support, a flow choking piece and a valve leaflet. The valve support comprises a valve leaflet support and a skirt support. The flow choking piece covers the valve leaflet support. The valve leaflet is arranged in the valve leaflet support. The skirt support extends outwards from the valve leaflet support in the radial direction of the valve leaflet support. The heart valve further comprises a balloon surrounding the outer wall of the valve leaflet support. The heart valve can reduce central reflux to a large extent.

The invention discloses a material processing system. The material processing system comprises material conveying equipment and material grabbing equipment, wherein the material conveying equipment comprises a support component, a conveying belt, a power component, a magnetic component and an adjusting structure, the conveying belt is used for conveying materials, the power component is used for driving the conveying belt to rotate so as to convey the materials, the magnetic component is arranged below the conveying belt and is used for sucking the materials located on the conveying belt, andthe adjusting structure is matched with the power component so as to adjust the tightness of the conveying belt. According to the material processing system, the material conveying equipment and the material grabbing equipment are arranged, so that the materials can be quickly grabbed and then are conveyed, the material processing efficiency can be effectively improved in the process, and manpoweris saved; the materials cannot deflect, remain, slip or fall off in the process, so that quick conveying is realized, and the material processing efficiency is improved.