43results about How to "Safe and controllable operation" patented technology

The invention relates to a plasma garbage gasification device and process. The device comprises a gasification reaction chamber, a steam heat exchanger, a steam buffer tank, an air buffer tank, an inner and outer double-cyclone heat exchanging dust collector, a cooling tower, a hydrogen sulfide removal sprayer, a water ring compressor, a gas-water separator, a gas storage tank and a control system of the device, which are connected through a gas pipeline; the gasification reaction chamber comprises an automatic feeding device, an automatic ignition device, a primary gasification zone and a plasma reaction zone; and the plasma reaction zone consists of a secondary refining zone and a gas refining zone. The process comprises the following steps of: gas generation; gasification medium preheating; gas purifying and filtering; and gas compression and storage. The invention has the characteristics of simple structural design, reasonable energy efficiency utilization, low primary input cost and low power consumption, and particularly, harmful substances such as dioxin and the like generated in the gasification process can be effectively removed, the volume reduction ratio is increased, and the waste is turned into the wealth.

The invention relates to a seal lock. The seal lock comprises a lock shell of a columnar structure. The seal lock is characterized in that a lock body control assembly for achieving an unlocking or locking function, and a pressing rebounding device for completing sealing operation through external force pressing in an unlocked state are installed in the lock shell; and the lower portion of the pressing rebounding device is connected with a seal. The seal lock is simple and reasonable in structural design and safe and controllable in operation; a lock body is controlled to be unlocked and locked through fingerprint recognition, and during manual pressing sealing, due to the design of the pressing rebounding device, the sealing frequency is effectively controlled; and a camera is installed on the lock body, so that sealed files and sealing processes are clearly recorded, and the controllable whole course of seal management is truly achieved.

The invention discloses a method for artificially inducing wasps to kill insects. The method comprises the following steps of fixed cultivation of the wasps, mobile cultivation of the wasps and wasp stocking and insect killing. By the method for artificially inducing the wasps to kill the insects, various insect killing wasp populations are cultivated artificially; the method is targeted; insect killing of the wasps can be implemented all day long or all year round; the wasps are bred in mobile cultivation boxes in a managed and controlled manner; the method is operated safely in a controlled manner; and the insect killing cost is low.

The invention provides withdrawal well equipment for an underground coal gasification process. Particularly, in the underground coal gasification process, the withdrawal well equipment can remove product gas after a cooling agent is injected for cooling. The invention further provides application of the withdrawal well equipment in the underground coal gasification process. Through design, material selection and application of all components of the withdrawal well equipment and optimization of the application of a withdrawal well, operation of the withdrawal well equipment is safer and more controllable, and most components such as wellhead equipment, product pipes, cooling agent pipes and a monitoring instrument system of the withdrawal well equipment can be completely or partially recycled and reutilized after the gasification process is finished.

The invention discloses a system and a method for secure access to a network device based on one-time access credentials. The system is provided with a bastion host server, an AAA server, a log analysis server, a client and managed network equipment, wherein the structures of the bastion host server and the AAA server are respectively improved. The system is innovatively characterized in that an AAA server randomly and dynamically generates one-time access evidences for SSH/telnet connection each time in real time, and the one-time access evidences are used for authentication; and the traditional local storage and local authentication mode of account password and authority setting of the network device is replaced. the one-time access credential is transmitted in an encrypted manner and isdiscarded after being used each time, and the network device only allows the user to access after passing the authentication of the one-time access credential, so that the safety and reliability of the login account password of the network device can be enhanced and ensured. The AAA server realizes centralized management of local authentication information dispersed in numerous network devices. The user management authority is finely divided, and the user behavior is limited in a legal management control range, so that the security of the network equipment is ensured.

The invention provides an oil testing device and an oil testing pipe column. The oil testing device comprises an integrated pipe column which is provided with an electronic manometer holding barrel, a packer, an E valve, a second circulating valve and at least one first circulating valve from bottom to top. The electronic manometer holding barrel is used for suspension of a temperature manometer for recording well bottom temperature and pressure; the packer is in a settable structure and used for packing an oil jacket annulus between an oil pipe and a casing pipe; after setting of the packer, drilling fluid is replaced with well completion fluid trough the E valve by circulation, and then the E valve is turned off to realize isolation of the oil pipe and the casing pipe; the oil jacket annulus above the packer and a stratum below the packer are communicated by the second circulating valve through radial communication to realize unsetting of the packer; the first circulating valve realizes well bottom static temperature and static pressure measurement through radial communication and axial closure. The oil testing device has advantages that by integration of multiple functions, safety and controllability of each step in an oil test period are guaranteed, well control risks are low, and safety and high efficiency in oil testing of ultra-deep high-temperature high-pressure gas wells are realized.

The invention relates to a device and method for recovering tin of a circuit board. The device comprises a first working groove and a second working groove. The first working groove comprises a tin removing groove and a liquid storage groove. The second working groove comprises a supplementing groove and an electrolysis groove. A negative electrode plate and a positive electrode plate are arrangedin the electrolysis groove. The tin removing groove pumps liquid into the liquid storage groove through a first liquid pump. The liquid storage groove pumps the liquid into the electrolysis groove through a second liquid pump. The electrolysis groove pumps the liquid into the supplementing groove through a third liquid pump. The supplementing groove pumps the liquid into the tin removing groove through a fourth liquid pump. The device is compact and reasonable in layout, continuous production is realized, operation is safer and more controllable, and the device has better use performance.

The invention discloses a travelling type grain dewatering and drying machine comprising a travelling chassis assembly, a hot-blast furnace, a six-set drying bin, a retainer wheel component, a generator set, a fan-shaped grain scraper, a multi-angle discharge machine and an intelligent frequency conversion control cabinet. The travelling type grain dewatering and drying machine has the advantages that the travelling type grain dewatering and drying machine is compact in structure, high in detection efficiency as all components and assemblies adopt current cutting-edge technology, safe and controllable in operation and innovative and attractive in appearance, is energy saving and environment friendly as a coke burning gas furnace is adopted, is convenient to use and low in processing cost, can be dragged to user sites for operation, and is unlimited to tons of grain, fast in drying speed of parking operation, uniform in single-grain shrinkage, good in quality and the like, data of temperature, humidity and the like can be collected and judged visually in good time, the problems that grain drying is difficult and unordered for small farm holders in the production mode, the drying machine has air holes and stagnation leading to bin blockage and the quality is hard to control are solved, labor is saved, and labor intensity of workers is reduced.

The invention discloses a shear plate control method and system based on a macOS operating system, and the method comprises the following steps: pre-establishing at least one credit granting softwaredirectory, and obtaining at least one of a software process name, a software unique identification code and a software signature of credit granting software; pre-establishing a credit granting contentdirectory; establishing a safety control function configuration file, and storing the safety control function configuration file; obtaining a clipboard service process of a macOS operating system, and injecting a control module and a security control function configuration file into the clipboard service process; enabling the control module to replace a process communication function in the shearplate service process with a safety control function according to a safety control function configuration file; and when the clipboard service is called, executing clipboard control operation according to the safety control function.

The invention discloses a system for power generation by utilizing thermal decomposition gas of domestic garbage. The system comprises a garbage sieving device, a garbage thermal-decomposition device and a power generating device, wherein sorted garbage is conveyed into a garbage feeding port of the garbage thermal-decomposition device by a garbage conveying belt; a high-temperature gas outlet of the garbage thermal-decomposition device is connected with a gas turbine; a gas exhausting port of the gas turbine is connected with a high-speed gas inlet of the garbage sieving device; moderate-heat-value fuel gas generated by thermal decomposition is used for heating and burning of a garbage sealing and thermal-decomposition furnace. The system disclosed by the invention has the advantages that the heat is utilized for continuous thermal decomposition of the garbage in the sealed thermal-decomposition furnace so as to implement continuous self-feeding and self-use purposes of the fuel gas, and is utilized for driving the gas turbine to do work and generate power, and high-temperature and high-speed tail gas exhausted by the gas turbine is used for sieving the garbage, and by repeated circulation, the difficulty in treating the domestic garbage in most cities can be solved, the garbage burning can be prevented from exhausting dioxin-polluted gas and dust to the atmosphere, and deposited sewage generated by garbage landfill is also avoided.

The invention relates to a blast furnace hot blast stove fire well wall brick collapse early warning and control process which comprises the following steps: opening an ignition hole above a hot blaststove combustor in a planned manner for visual inspection by utilizing a blast furnace regular repair hot blast stove stop operation opportunity; if it is confirmed that bricks fall off from the upper portion of the combustor, giving an early warning prompt, meanwhile, reducing the arch crown temperature of the combustion furnace by 5-10 DEG C according to conditions, and delaying further deterioration of collapsed bricks through technological parameter adjustment; observing the maximum coal gas burning amount of the brick collapse hot-blast stove under normal coal gas pressure; under the condition that the residual oxygen content in the flue gas is normal, increasing the air-fuel ratio of the burning furnace by 0.05-0.08%, and increasing the excess air coefficient of the burning furnace;and periodically executing the steps 1 to 4, carrying out early warning and prompting according to the brick collapse condition of the fire well wall, and carrying out process parameter control adjustment according to trend change. The process has good economic benefits in the aspects of increasing the productivity and reducing the fuel consumption; and hazardous substances such as a flue pipeline, waste heat recovery and thinning generated by a chimney can be eliminated, and good popularization significance is achieved.

The invention relates to a method for directly producing tungsten oxide powder by adopting a sodium tungstate solution, which comprises the following steps: by taking the sodium tungstate solution separated by tungsten ore hydrometallurgy as a raw material, adding a tungsten precipitation reagent into the sodium tungstate solution while stirring to generate calcium tungstate precipitate, and washing to remove impurities; the method comprises the following steps: preparing a tungsten dissolving reagent, adding calcium tungstate into the tungsten dissolving reagent, stirring and dissolving, precipitating to remove impurities to obtain a tungsten solution, adding a calcium precipitating agent into the tungsten solution, stirring and standing to precipitate calcium, adjusting the pH value of the solution to 5-8, and filtering to remove calcium; the decalcified filtrate is transferred to a hydrothermal kettle for a hydrothermal reaction, and tungsten oxide slurry is obtained; filtering, washing and drying the tungsten oxide slurry to prepare tungsten oxide; and reducing the tungsten oxide through hydrogen to prepare tungsten oxide powder. The separation of tungsten and impurities is realized by utilizing the dissolution characteristic of the tungsten compound after form transformation. According to the method, ammonia water and an ion adsorption or extraction impurity removal device are not needed, the process is simple, the flow is short, less wastewater is generated, environmental pollution is small, and operation is safe and controllable.