193results about How to "Adjustable quantity" patented technology

A method for continuous production of hydroxyazapirones, for example 6-hydroxybuspirone, using a modified reactor. The products of the invention are useful as pharmaceutical agents.

The invention relates to four-column oil-pressure square pipe punching equipment and belongs to the field of automatic processing of mechanical equipment. The four-column oil-pressure square pipe punching equipment comprises a machine frame, a feeding/discharging device, a punching device, a punching working platform, a hydraulic power device and a programmable logic controller (PLC) electric cabinet, wherein the hydraulic power device provides power; the PLC electric cabinet controls the procedure processing process; the machine frame is arranged at the lower part of the equipment; the feeding/discharging device is placed on the machine frame; the punching working platform is fixedly connected to the machine frame and is mounted below the feeding/discharging device; the punching device is arranged above the punching working platform. The equipment finishes feeding, positioning, stepping punching and discharging through the PLC electric cabinet and realizes the punching operation on a square pipe. The equipment has the characteristics of high efficiency, high quality and simple structure, can reduce the labor intensity, can adjust the hole position and quantity according to requirements, and can adapt various punching requirements of the square holes.

The invention discloses a vibration reduction control device of a tuned mass damper. The vibration reduction control device of the tuned mass damper comprises a supporting bracket, a mass block and a damping element, wherein extension springs are mounted between the periphery of the mass block and the supporting bracket in a uniform distribution manner; the extension springs are arranged horizontally; one end of every extension spring is connected with the supporting bracket, and the other end of the corresponding extension spring is connected with the mass block; the damping element is arranged between the bottom of the mass block and a bottom plate of the supporting bracket; the mass block comprises multiple steel plates, and is in a cubic or cylindrical integral structural shape, when the mass block is cubic, the extension springs are uniformly distributed on the four side surfaces of the mass block, and when the mass block is cylindrical, the extension springs are uniformly distributed on the circumferential side surface of the mass block in an equal-angle manner. The control device is scientific in design, convenient to operate and use, low in cost, good in economical efficiency and extremely high in vibration reduction sensitivity, can be used for controlling horizontally universal (randomly directional) vibration, and is applicable to a low-frequency state, a medium-frequency state and a high-frequency state at the same time; further, a frequency range can be regulated through adjusting the rigidity of the extension springs or the weight of the mass block or adjusting the pendulum length of a pendulum rope.

A control system for controlling the ignition of a plasma-jet spark plug provided in an internal combustion engine senses an operating condition of the internal combustion engine, and determines an ignition mode of the plasma-jet spark plug in accordance with the sensed operating condition. The control system performs an ignition control of breaking down the insulation across a spark discharge gap by applying a first electric power to the plasma-jet spark plug, and producing plasma in the vicinity of the spark discharge gap by applying a second electric power to the spark discharge gap in a state of dielectric breakdown. The control system performs this ignition control according to the ignition mode determined as mentioned above.

The invention discloses a carbon fiber gas cylinder detection line and a carbon fiber gas cylinder detection method. The detection line includes, in a front-to-back arrangement manner, a water pressure test apparatus, a water pressure auxiliary test apparatus and an air tightness test apparatus. The water pressure test apparatus includes a test rack, a test operation bench, a pressurizing apparatus, a test case installed on the test rack, and test trolleys for stably placing a plurality of to-be-tested gas cylinders. The water pressure auxiliary test apparatus includes a gas cylinder fixture, a transporting trolley, and a gas cylinder water-pouring-away and drying device. The air tightness test apparatus includes an air tightness detection apparatus and a second air supply apparatus for supplying air to the to-be-tested gas cylinders. The air tightness test apparatus is in a cabinet structure or a ground trough structure. The detection method includes the steps of 1) water pressure test; 2) water pouring-away and drying treatment; and 3) air tightness test. The detection line is reasonable in design and simple in operations, is good in use effects, and can easily and quickly complete water pressure test and air tightness test for a plurality of carbon fiber gas cylinders.

A seal ring which maintains a stable sealing performance over a long term is provided. In a first seal portion 4, linear contact portions which come into linear contact with the sidewall surface of an annular groove on the unsealed fluid side are continuously extended over the whole circumference of the seal ring from one side of a separation portion 2 to the other side thereof, and the linear contact part provided at the convex part 21 of the separation portion 2, and the linear contact part provided at the concave part 24 of the separation portion 2 are located at a distance in the diametric direction of the seal ring.

The invention provides a preparation method of a porous copper electrode for electrochemical reduction of carbon dioxide. The preparation method comprises the following steps: 1) a layer of a sacrificial metal is electrolytic deposited on a copper base material; 2) a heat treatment is conducted under the protection of an inert gas, so that a solid state diffusion between a metal copper and sacrificial metal atoms occurs, and an alloy layer of the sacrificial metal and the copper is obtained on the surface of the copper; 3) the electrochemical dealloying is conducted. The porosity of the porous copper electrode is 50%-95%, the pore size is 50 nm-500 nm, and the sacrificial metal content is no more than 5%. The porous copper electrode has the characteristics of adjustable pore size and quantity, good air permeability and high specific surface area. The porous copper electrode has better specificity for the selection of target products and is suitable for electrochemical reduction reaction of carbon dioxide catalyzing.

The invention discloses a technical method for large-scale production of particles by a multi-nozzle module based on a 3D (three-dimensional) printing technique and application of the technical method. The technical method is characterized in that a single nozzle is of a coaxial annular gap air blowing structure, the middle part is provided with a fluid channel, and the coaxial annular gap is an air channel; on the basis of a two-phase flow cutting principle, liquid-phase liquid is cut by air, and liquid droplet particles are produced; by controlling air and liquid outlet pressures and flow rates, the liquid droplets with different particle sizes can be obtained; the number of nozzles can be designed according to the requirement of droplet output, and liquid and air are uniformly distributed by a distributor, so as to obtain higher droplet production efficiency. The technical method has the advantages that the preparation of 3D printing nozzle modules is simple, the material cost is low, and other complicated mechanical processing methods are not required; the prepared particles are free from the pollution by poisonous matters, such as a continuous phase and surfactants; the technical method is especially suitable for preparing high-viscosity solution and suspension droplets containing insoluble particles, is widely applied to the fields of medical care, petroleum, biology, environment protection and the like, and is suitable for large-scale industrial production.

The invention discloses an automatic detection line and detection method of a carbon fiber gas bottle. The detection line comprises a water pressure testing device, an auxiliary water pressure testing device, a bottle valve loading and unloading machine and an air tightness experiment device, which are arranged from front to back, wherein the water pressure testing device comprises a testing rack, a testing operation platform, a pressurizing device, a testing box and a testing trolley; the auxiliary water pressure testing device comprises a gas bottle clamp, a conveying trolley, and gas bottle water pouring and drying treatment equipment; the bottle valve loading and unloading machine comprises a bottle valve loading and unloading rack, a control cabinet, a gas bottle fixing mechanism and a bottle valve screwing mechanism; the air tightness experiment device comprises an air tightness testing device and a second gas supplying device for supplying gas to a plurality of gas bottles to be tested. The detection method comprises the following steps: 1, testing water pressure; 2, carrying out water pouring and drying treatment; 3, assembling a bottle valve; 4, testing air tightness. The automatic detection line provided by the invention is reasonable in design, simple to use and operate and good in use effect, and can be used for simply, conveniently and rapidly finishing water pressure testing and air tightness testing processes of the plurality of carbon fiber gas bottles.

An electrostatic atomizer comprising a discharge electrode, a counter electrode, a cooling source, a high voltage power supply and a voltage detector. The cooling source cools the discharge electrode to form thereon dew as water. The power supply applies high voltage for discharge across the electrodes. The detector detects voltage between the electrodes. The power supply includes a control device and a voltage stabilizing device that are opposite to each other in temperature characteristic. The control device operates to pick up the voltage detected with the detector via the voltage stabilizing device, and to adjust the high voltage applied across the electrodes through feedback control so that the voltage corresponds to specified discharge voltage.

The invention provides an air-cooled refrigerator which comprises a box body, an air flue cover plate, an evaporator, a plurality of partitions, a plurality of air inlet air flues, a plurality of air return air flues and an air flue opening-closing device, wherein the partitions can be detachably arranged in a storage part for partitioning the storage part into a plurality of sub rooms; and random adjacent sub rooms are combined into a communicating room by at least partially dismounting the partitions, so that number and volume of all rooms in the storage part are regulated. The air flue opening-closing device can be used for opening or closing the air return air flues according to number and a distribution condition of all rooms in the storage part, so that each room communicates with one air return air flue in an open state. According to the air-cooled refrigerator provided by the invention, the structures of the air flues can be correspondingly changed according to the number and the distribution condition of the rooms of the storage part, so that each room is equipped with a respective independent circulating air flue, and therefore, cold and heat distribution in each room is uniform.

The invention discloses a stiffened joint-crossing plate based bridge deck jointless expansion device and a construction method thereof. The expansion device comprises a prefabricated expansion assembly and an expansion joint filler filled layer filled above the prefabricated expansion assembly, wherein the prefabricated expansion assembly is arranged on an expansion joint reserved between every two adjacent girder segments, and a sliding layer is laid on a girder exposed segment of each girder segment; the prefabricated expansion assembly comprises a stiffened joint-crossing plate and two wave-shaped expansion plates. A construction method for an expansion device to be repaired comprises the steps of cleaning an original bridge expansion device, constructing reserved mounting grooves, constructing the sliding layers, carrying out field assembly and mounting on the prefabricated expansion assembly and constructing the expansion joint filler filled layer. A construction method for an expansion device to be constructed comprises the steps of prefabricating the prefabricated expansion assembly, carrying out field assembly on the prefabricated expansion assembly, constructing the sliding layers, mounting the prefabricated expansion assembly and constructing bridge deck pavement structures and the expansion joint filler filled layer. The stiffened joint-crossing plate based bridge deck jointless expansion device and the construction method thereof have the advantages that the design is reasonable, the construction is convenient, the use effect is good, and multiple problems of the existing expansion devices can be solved.

The invention discloses a bridge seamless telescopic device and a construction method of the device. The bridge seamless telescopic device comprises a main beam span telescopic device and a bridge abutment telescopic device, wherein the main beam span telescopic device comprises a first prefabricated telescopic component and a first telescopic joint filler filling layer; the bridge abutment telescopic device comprises a second prefabricated telescopic component and a second telescopic joint filler filling layer; the first prefabricated telescopic component and the second prefabricated telescopic component are formed by reinforced joint-crossing plates and wave-shaped telescopic plates. A construction method of a telescopic device to be repaired comprises the following steps: cleaning an original bridge telescopic device, constructing a preserved mounting slot, constructing a sliding layer, assembling and mounting prefabricated telescopic components, and constructing telescopic joint filler filling layers. A construction method of a telescopic device to be constructed comprises the following steps: prefabricating and processing prefabricated telescopic components, assembling the prefabricated telescopic components on site, constructing a sliding layer, mounting prefabricated telescopic components, paving a structure and constructing telescopic joint filler filling layers. The bridge seamless telescopic device is reasonable in design, convenient to construct and high in using effect, and can be used for solving various problems of the existing telescopic device.

The invention provides an improved crimping type IGBT device. The improved crimping type IGBT device comprises a tube, and plate-shaped metal electrodes that are coaxially arranged at the upper and lower ends of the tube; a lug boss is fixed on the inner side face of the lower end metal electrode; IGBT power sub modules are crimped between the lug boss and the upper end metal electrode; each IGBT power sub module comprises a grid electrode signal input end and a gird electrode signal output end; the grid electrode signal input end is electrically connected with a grid electrode PCB that is parallel with the lower end metal electrode; and the grid electrode signal output end is electrically connected with an auxiliary emitting electrode PCB that is parallel with the lower end metal electrode. According to the technical scheme provided by the improved crimping type IGBT device, the stray inductance and stray capacitance of the auxiliary emitting electrode circuit are reduced, the consistency of the parameters of each IGBT power sub module driving circuit of the crimping type IGBT device is improved, and the risk of current oscillation among the IGBT power sub modules is reduced.

The invention relates to a pH/reduction dual sensitive hydrophilic copolymer drug carrier as well as a synthesis method and application thereof. S,S'-bis(alpha, alpha'-dimethyl-alpha''-acetic acid) trithiocarbonate is taken as a chain transfer agent, RAFT (reversible additive fragment transfer) polymerization is carried out on N-t-butyloxycarboryl propylene hydrazine, N-(3-dimethylamine propyl) methacrylamide and N-hydroxymethyl acrylamide in two steps, reaction is carried out on hydroxyl on N-hydroxymethyl acrylamide and methoxyl polyethylene glycol at an isocyanic acid esterification end, polyethylene glycol is connected by virtue of a disulfide bond, and the target product, namely pH/reduction dual sensitive hydrophilic copolymer drug carrier, is obtained after a protecting group is removed. The pH/reduction dual sensitive hydrophilic copolymer drug carrier can load adriamycin and a gene drug at the same time; meanwhile, a hydrophilic polyethylene glycol shell can protect gene substance, long circulation is realized, a disulfide bond connected with polyethylene glycol is beneficial to escape of endosome of drug-carrier, the copolymer after being loaded with a drug can be self assembled into nanomicelle in water, bioavailability of the drug can be improved, and toxic and side effects can be reduced. The copolymer synthesis method provided by the invention has the advantages that molecular weight of each segment and quantity of polyethylene glycol segments can be flexibly adjusted and reaction conditions are mild.

The invention discloses an abutment hidden expansion device and a construction method thereof. The expansion device comprises a prefabricated expansion component arranged on an abutment expansion joint, and an expansion joint filler filling layer filled in the upper side of the prefabricated expansion component, wherein a bridge deck pavement structure is paved on a main beam; a slide layer is paved on an exposed section of the main beam; a road surface pavement layer is arranged at the outer side of the upper part of an abutment; the prefabricated expansion component comprises a reinforced joint plate and a waveform expansion plate; a construction method of an expansion device to be repaired comprises the steps of cleaning of an original bridge expansion device, construction of a reversed mounting groove, construction of the slide layer, field assembly and installation of the prefabricated expansion component and construction of the expansion joint filler filling layer; and a construction method of an expansion device to be constructed comprises the steps of prefabrication of the prefabricated expansion component, field assembly of the prefabricated expansion component, construction of the slide layer, installation of the prefabricated expansion component and construction of the bridge deck pavement structure and the expansion joint filler filling layer. The abutment hidden expansion device and the construction method thereof have the advantages of reasonable design, convenience for construction and good use effect, and can solve multiple problems in traditional expansion devices.

The invention relates to a method for preparing thermoplastic toughened epoxy resin with a thermal reversible chemical crosslinking characteristic. The method comprises the steps as follows: 1) afterbifunctional epoxy resin and polyfunctional epoxy resin are mixed, the mixture and furfurylmercaptan are subjected to a click reaction, and an intermediate with a furan functional group as a terminalgroup is obtained, wherein the bifunctional epoxy resin is an epoxy monomer containing two epoxy groups and the polyfunctional epoxy resin is an epoxy monomer containing three or more epoxy groups; 2)the intermediate and a crosslinking agent containing a maleimide group are subjected to a Diels-Alder reaction to produce reversible crosslinked toughened epoxy resin. The defect that traditional curing epoxy resin is difficult to dissolve and melt is overcome. The thermoplastic reversible crosslinked toughened epoxy resin is recycled by use of Diels-Alder covalent bonds and can still keep performance of traditional epoxy resin, and the method is convenient and has industrial application prospects.

A substrate on which an amorphous silicon film is formed is placed in a vacuum chamber. An organic nickel vapor or gas is introduced into the chamber and then decomposed, so that a thin film containing nickel (a catalytic element which promotes crystallization of the amorphous silicon film) or a compound thereof is uniformly deposited on the amorphous silicon film. After that, the substrate is heated at a temperature such as 550° C. lower than a normal solid phase growth temperature for a short time such as 4 hours, to uniformly crystallize the amorphous silicon film. A crystalline silicon film is obtained by this crystallization process.

The invention discloses a corrugated steel plate built-in seamless expansion device between a girder and a bridge abutment and a construction method of the seamless expansion device. The expansion device comprises prefabricated steel plate elements distributed on a bridge abutment expansion joint and expansion joint filler packing layer filled above the prefabricated steel plate elements; the prefabricated steel plate elements comprise straight steel plates, corrugated steel plates and a plurality of arched reinforcing steel bars; a plurality of shear pins are fixed on the corrugated steel plates; a sliding layer is paved on the girder exposed section; the construction method of the to-be-repaired expansion device comprises the following steps: cleaning the original bridge expansion device, constructing preserved mounting grooves, constructing the girder sliding layer, assembling the prefabricated steel plate elements in the field, and mounting and constructing the expansion joint filler packing layer; the construction method of the to-be-constructed expansion device comprises the following steps: prefabricating and processing the prefabricated steel plate elements, assembling the prefabricated steel plate elements in the field, constructing the girder sliding layer, mounting the prefabricated steel plate elements, and constructing the bridge deck pavement structure and the expansion joint filler packing layer. The corrugated steel plate built-in seamless expansion device disclosed by the invention is reasonable in design, convenient to construct, and good in use effect, and can solve a plurality of problems in the existing expansion device.

A device for preheating charging material for glass melting installations using its exhaust gases, having a vertical preheating shaft through which a heat exchanger extends conducting exhaust gases, the shaft upper end having a charging material opening, the lower end having a preheated charging material discharge device, the inlet of the heat exchanger connected to an exhaust gas supply line and the outlet connected to an exhaust gas outlet line. To recuperate a high portion of the exhaust gas heat, and to reduce environmental contamination and the suctioning of environmental air as false air, the exhaust gas supply line has an outlet line branch for drawing oft part of the hot gases and the outlet line is connected to a downwardly open sealing gas line in the region of the charging material above the heat exchanger exhaust gas passage for the hot gas emission into the charging material.

A constant current supply circuit generates a constant current according to a control voltage. A data read current passing through a tunneling magneto-resistance element constituting a memory cell during data write is set according to the constant current. Constant current supply circuit includes a voltage adjustment circuit generating a reference voltage adjustable according to an external input, a current source generating the constant current according to the reference voltage, and a voltage switch circuit transmitting the reference voltage to the current source as a control voltage during a normal operation.

The invention relates to a thermoplastic epoxy resin with thermal reversible chemical crosslinking property and a preparation method thereof and in particular relates to a method for preparing a recyclable epoxy resin by utilizing an ontology click chemistry reaction. The method comprises the following steps: 1) carrying out a click reaction on multifunctional epoxy resin and furfurylmercaptan inthe presence of a tertiary amine catalyst so as to obtain an intermediate of which the end group is a furan functional group; 2) carrying out a Diels-Alder reaction on the intermediate and a cross-linking agent containing a maleimide group, thereby obtaining the reversible crosslinking epoxy resin. According to the method disclosed by the invention, the defect that the traditional cured epoxy resin is refractory is overcome, so that the epoxy resin can realize decrosslinking at a high temperature, so that recycling and secondary processing of the epoxy resin can be realized.