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61results about How to "Avoid supplements" patented technology

Helium cooling magnetic resonance superconducting magnet

The invention discloses a helium cooling magnetic resonance superconducting magnet which comprises a vacuum vessel, an accommodating cavity used for arranging a cryogenic vessel is formed inside the vacuum vessel, and a cold shield which is used for reducing radiation heat leakage of room temperature to the cryogenic vessel is further arranged in the accommodating cavity; a superconducting coil is arranged in the cryogenic vessel; a refrigerating machine is fixed on the vacuum vessel; a first stage cold head of the refrigerating machine is connected with the cold shield, a second stage cold head of the refrigerating machine is located in the cryogenic vessel, the helium cooling magnetic resonance superconducting magnet further comprises a helium gas pipe which is used for filling gaseous helium into the cryogenic vessel, the helium gas pipe comprises a stretching end which stretches out of the vacuum vessel, and a sealing ball valve which is used for preventing gaseous helium leaking when the helium cooling magnetic resonance superconducting magnet operates or the superconducting coil is invalid. The gaseous helium in the cryogenic vessel is specifically gaseous helium with 1-10 atmospheric pressure in room temperature. According to the helium cooling magnetic resonance superconducting magnet, the helium gas utilization ratio can be improved, and the maintenance process of the superconducting magnet can be simplified.
Owner:NINGBO JANSEN SUPERCONDUCTING TECH CO LTD

Method for separating MEOH-DMC (methanol-dimethyl carbonate) through vapor permeation

The invention discloses a method for separating MEOH-DMC (methanol-dimethyl carbonate) through vapor permeation, which belongs to the technical field of separation of methanol-dimethyl carbonate. The method comprises the following steps: firstly, with Na2O.n, SiO2, Al (OH)3 and Zn (OH) 2 as raw materials and a porous a-Al2O3 supporting membrane tube or a porous mullite membrane tube as a supporting membrane tube, preparing a NaY-Zn molecular sieve membrane through hydrothermal synthesis, and then, conveying MEOH-DMC saturated mixed vapor with temperature of 121-140 DEG C and pressure of 0.63-1.08 Mpa into a molecular sieve membrane separator equipped with the NaY-Zn molecular sieve membrane, and maintaining the vacuum absolute pressure of the permeation side of the molecular sieve membrane separator to 28-95 Kpa through a vacuumizing method, wherein the MEOH in the mixed vapor preferentially permeates through the molecular sieve membrane to be enriched on the permeation side of the membrane and is condensed into liquid under low vacuum degree, and the mixed vapor on the retentate side is further separated by multiple levels of serially connected molecular sieve membrane separators. The method disclosed by the invention can be used for effectively improving the separating performance of the MEOH-DMC and has the advantages of small investment, low operation cost and the like.
Owner:BEIJING ZHONGHUA DINGSHENG ENERGY SAVING TECH

Repetitive pulse high-intensity magnetic field generation device and method

The invention provides a repetitive pulse high-intensity magnetic field generation device and method, and belongs to the field of high-intensity magnetic fields. The device comprises a magnet coil anda plurality of independent power supply units, wherein the plurality of independent power supply units are connected to the two ends of the magnet coil in parallel; each power supply unit comprises an energy supply element, a follow current loop and an electrical switch, wherein the follow current loop is connected with the energy supply element in parallel and then is connected with the electrical switch in series, and the follow current loop comprises a follow current resistor and a one-way conduction element which are connected in series with each other. According to the invention, a scheme that multiple sets of power supplies discharge to a single magnet is adopted, a repeated pulse strong magnetic field can be generated by controlling the connection mode of multiple power supply units and the magnet coil and the discharge time sequence of the electrical switch, and the advantages of simple circuit topology and control system, diversified magnetic field waveforms and random controllable magnetic field polarity, magnetic field intensity and repetition frequency are achieved.
Owner:HUAZHONG UNIV OF SCI & TECH

Scrubber integrated system capable of circularly filtering and recycling sewage

ActiveCN113440076AHigh circulation filtration efficiencyImprove filtering effectCarpet cleanersFloor cleanersWater flowSewage
The invention discloses a scrubber integrated system capable of circularly filtering and recycling sewage. The scrubber integrated system is characterized by comprising a shell, a roller assembly, a dust collection assembly, a water tank and a water circulation assembly are arranged in the shell, the roller assembly is arranged at the front end of the shell and used for sweeping garbage and collecting the garbage into the dust collection assembly, the water tank abuts against the roller assembly, a closed cavity for water to pass through is formed between the water tank and the roller assembly and communicated with the water circulation assembly through a liquid inlet pipeline and a liquid outlet pipeline, and the water circulation assembly can drive water to flow through the closed cavity, sewage flowing out of the liquid outlet pipeline enters the water circulation assembly to be purified and then flows into the closed cavity through the liquid inlet pipeline to achieve water circulation utilization. The system has the advantages of being exquisite in structure, capable of achieving product miniaturization, good in cleaning effect, good in use experience, low in production and manufacturing cost and beneficial to saving water, and the market application prospect is good.
Owner:GUANGDONG YUNHAN INTELLIGENT TECH CO LTD

Power electrical cabinet

The invention belongs to the technical field of electrical cabinets, and particularly relates to a power electrical cabinet. The cabinet comprises a cabinet body and a cabinet door; the cabinet door is mounted on the cabinet body, and a handle is arranged on the cabinet door; a mounting cavity is formed in the cabinet body; a plurality of placing plates are fixedly mounted in the mounting cavity;an electrical element is fixedly mounted on the placing plate; a heat dissipation pipe is fixedly installed on the upper surface of the cabinet body; a storage cavity is formed in the cabinet body; the storage cavity is located above the mounting cavity; a heptafluoropropane fire extinguishing agent is compressed and stored in the storage cavity; the storage cavity is communicated with the mounting cavity through a switch module; after the temperature borne by the switch module exceeds a certain limit, the switch module is automatically started to communicate the mounting cavity with the storage cavity. The cabinet is simple in structure, dust can be effectively prevented from entering the cabinet body, meanwhile, when a fire occurs in the cabinet body, a channel for outside air to enter the cabinet body can be blocked, and oxygen supply of an ignition point in the cabinet body is blocked.
Owner:左建军

Synchronous biochemical advanced oxidation liquid waste treatment method and device

The invention discloses a synchronous biochemical advanced oxidation liquid waste treatment method and device. The device comprises a biological reaction tower and a gas dissolution pump. The gas dissolution pump is communicated with a water suction pipe on the top of the biological reaction tower and a through hole water pipe at the bottom of the biological reaction tower. The gas dissolution pump is used for pumping liquid waste from a water collection pool into the biological reaction tower to drive water circulation inside the tower. Two packing layers are arranged inside the biological reaction tower, wherein granular catalysis biological packing is placed on the upper layer, and suspension packing is placed on the lower layer. The granular catalysis biological packing is placed in the middle of the biological reaction tower, the water through water pipe is arranged at the bottom of the tower, and an ultrasonic transducer amplitude-change pole is placed above the biological reaction tower; the processing capacity is high, organic loads are high, the processing effect is 2-3 times higher than that of processing technologies of the same kind, the device has the advantages of being low in investment, small in occupied land and the like, the advanced oxidation technology, the ultrasonic decomposition technology and microbiological degradation technology are integrated, and the device has the advantages of being easy and convenient to operate and maintain, high in purification efficiency, low in investment and operation cost and the like, and is particularly applicable to processing organic liquid waste hard to degrade on the condition of intensified land occupation.
Owner:东莞市环境科学研究所 +1

Full-automatic multi-layer board double machine production line

The invention discloses a full-automatic multi-layer board double machine production line. The full-automatic multi-layer board double machine production line comprises a single board I vertical splicing and horizontal splicing mechanism, a finished product viewing angle detection mechanism, a single board I defective product separation mechanism, a 90-degree steering mechanism III, a single boardII vertical splicing mechanism, a 90-degree steering assembly mechanism, a single board II horizontal splicing mechanism, a 90-degree steering mechanism IV, a single board II defective product separation mechanism, a single board automatic gluing mechanism, a glue board assembly mechanism, a stacking mechanism, an automatic conveying mechanism and a full-automatic cold pressing mechanism. According to the full-automatic multi-layer board double machine production line, the flow line production from single board finishing to assembly cold pressing is achieved, a traditional production technology process of a multi-layer board is greatly simplified, intermediate links are reduced to achieve the flow production, the product quality of single board production is improved, the problems of cavity, sticking, color difference and the like existing in single board production are solved, meanwhile the needs of assembly speed can be met, the supplement amount of a supplement mechanism is avoided, the intermediate conveying link is greatly reduced, and the working efficiency is improved.
Owner:山东昶兴智能科技有限公司

Method and device for detecting content of carbon tetrafluoride in electrical equipment

The invention discloses a device for detecting the content of carbon tetrafluoride in electrical equipment. The device comprises a first pipeline, a second pipeline, a third pipeline, a first valve, asecond valve, a third valve, a carbon tetrafluoride detector, a gas storage tank and a compressor, wherein the first pipeline is connected with the electrical equipment and used for forming a ventilating gas line; the second pipeline is connected with the first pipeline and used for forming a measuring gas line; the two ends of the third pipeline are connected with the second pipeline separatelyto form a recharge gas line; the first valve is arranged on the first pipeline; the second valve is arranged on the second pipeline; the third valve is arranged on the third pipeline; the carbon tetrafluoride detector is arranged on the second pipeline and used for detecting the content of carbon tetrafluoride in the measuring gas line; the gas storage tank is arranged on the second pipeline and used for storing a gas sample detected by the carbon tetrafluoride detector; the compressor is arranged on the second pipeline, connected with the gas storage tank and used for recharging the gas sample in the gas storage tank into the electrical equipment. The device is used for accurately detecting the content of carbon tetrafluoride in the electrical equipment with environmental friendliness. The invention further discloses a method for detecting the content of carbon tetrafluoride in the electrical equipment.
Owner:STATE GRID CHONGQING ELECTRIC POWER CO ELECTRIC POWER RES INST +2

Method for controlling gushing in advancing process of shield tunneling machine

The invention provides a method for controlling gushing in the advancing process of a shield tunneling machine. The method comprises the steps that under the situation that the shield tunneling machine conducts advancing to the position at a first preset distance from a river, and high-molecular polymers are added into a soil bin of the shield tunneling machine; a migration riverway is excavated in the position, at a second preset distance from the river, in the large mileage direction of an advancing route of the shield tunneling machine; a water-intercepting dam is constructed at the upstream position of the river, a water-retaining wall is constructed at the downstream position of the river, and thus a river-closure riverway is determined; river water in the river is diverted to flow tothe migration riverway; riverway hardening construction is conducted on the river-closure riverway; precipitation wells are driven on the two sides of the position, between the shield tunneling machine and the river-closure riverway, of the advancing route; and after the shield tunneling machine passes through the part below the river-closure riverway, the water-intercepting dam and the water-retaining wall are dismantled so as to enable the river water in the riverway to flow back to the river-closure riverway. Through the method, the gushing phenomenon occurs when the shield tunneling machine downwards passes through the river can be effectively prevented, ground surface subsidence caused by gushing is avoided, the construction progress is ensured, and the safety risk is avoided effectively.
Owner:CHINA RAILWAY 12TH BUREAU GRP +1

Energy saving and environment friendly street lamp

The invention discloses an energy-saving and environment-friendly street lamp, which comprises a waterproof base, an electric control box, a light box, etc., the upper end of the waterproof base is provided with an electric control box, and the upper end of the electric control box is provided with a light box. A through hole is opened in the center of the plate body at the connecting part of the control box, the lower end of the lifting rod passes through the through hole to connect with the electric control box, and the energy-saving bulb is installed on the bottom of the lifting rod through the rotating shaft. At the upper end, the rear end of the energy-saving bulb is fixed with a lampshade, the top of the arc-shaped plate is provided with a solar panel, the bottom of the arc-shaped plate is provided with two symmetrical connection protrusions, and the top of the light box is provided with There is a connection block corresponding to the connection protrusion, and the connection protrusion and the connection block are hinged together, so that the arc-shaped plate can rotate at the hinge point as the center of a circle. The energy-saving and environment-friendly street lamp of the present invention has the characteristics of obvious energy-saving effect, convenient use and long service life.
Owner:TIANJIN BANGHENG TECH

Automotive, automatic transmission and hybrid hydraulic control systems

ActiveCN103277505BSmall volumeRealize the function of pre-gear at startGearing controlSlow-startAutomatic transmission
The invention discloses an automobile, an automatic transmission and a hybrid power hydraulic control system. The hybrid power hydraulic control system comprises a first reversing valve, a second reversing valve and a third reversing valve. The first reversing valve is provided with a first valve port, a second valve port, a third valve port, a fourth valve port, a fifth valve port and a sixth valve port. The second reversing valve is provided with a first connector, a second connector, a third connector, a fourth connector and a fifth connector. The second valve port is suitable for being communicated with a cooling lubricant passage of the hydraulic control system, the third valve port is respectively connected with the third connector and the third reversing valve, the fourth valve port is respectively connected with the third connector and the third reversing valve, the fourth connector is suitable for being connected with the cooling lubricant passage, and the fifth port is suitable for being connected with a shift executing component of the automatic transmission. A main oil pump is respectively connected with the first connector, the second connector and the third reversing valve. An auxiliary oil pump is respectively connected with the first valve port and the sixth valve port. An energy accumulator is connected with the fifth valve port, and a driving device is used for driving the auxiliary oil pump to work. The hybrid power hydraulic control system is simple in structure, easy to control, and capable of effectively solving the problem of slow start of the automobile.
Owner:HYCET TRANSMISSION TECH HEBEI CO LTD

Treatment method of cellulose acetate butyrate production wastewater

The invention belongs to the field of wastewater treatment, and in particular relates to a treatment method for wastewater produced from cellulose acetate butyrate. The technical problem to be solved by the invention is that the existing treatment process is complex, the operation cost is high, and the amount of sludge is large. The solution of the present invention to solve the above-mentioned technical problems is to provide a treatment method for cellulose acetate butyrate production wastewater, comprising the following steps: 1) the cellulose acetate butyrate production wastewater first enters the adjustment tank for treatment for 12-16 hours, and then enters the immobilized photosynthesis Bacteria pool treatment for 46-52 hours; 2) The effluent from the immobilized photosynthetic bacteria pool enters the first settling tank for 2-3 hours; 3) The supernatant after the first settling tank settles flows into the anoxic tank for 20-28 hours; 4) The anoxic tank The treated effluent enters the aerobic tank for 20-28 hours; 5) The effluent treated in the aerobic tank enters the secondary sedimentation tank for 2-3 hours, and then the supernatant enters the discharge port for discharge or recycling. The method of the invention has good treatment effect, low operation cost, and can discharge up to the standard stably.
Owner:SICHUAN NITROCELLULOSE CORP +1

A kind of preparation method of perfluorocyclohexyl fluoride

The invention discloses a preparation method of perfluorocyclohexylformyl fluoride. (a) by volume, 5-6 parts of electrolyte, 15-16 parts of anhydrous hydrofluoric acid and 2-3 parts of solubilizer are put into the Reaction kettle, under the conditions of temperature 10-25°C and pressure 0.05-0.15MPa, react for 1-5 hours to obtain the electrolytic configuration solution, which is ready for use; (b) continuously add the electrolytic configuration solution obtained in step (a) to the circulation tank , and then fed into the electrolytic cell through a circulating pump, and the electrolytic fluorination reaction is carried out at a temperature of 15-35 °C under normal pressure. The gas phase product obtained by electrolysis enters the product condenser through the pipeline, and the liquid phase condensed by the product condenser enters the product separator for stratification. The upper inorganic phase is hydrogen fluoride, which is sent to the circulation tank to participate in the electrolytic fluorination reaction again. The lower inorganic phase After filtration and rectification, the product of perfluorocyclohexylformyl fluoride is obtained. The invention has the advantages of simple process, long operation period, stable product quality, energy saving and environmental protection.
Owner:ZHEJIANG JUSHENG FLUOROCHEM
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