9 results about "Foreign technology" patented technology

The present invention discloses an ambient air constant-current automatic sampling system and a sampling method thereof. The system includes a vacuum sampling tank, a buffer container and a switching valve. The buffer container is respectively connected to the vacuum sampling tank and the atmospheric environment through the switching valve. Through the switching control of the switching valve, the buffer container is alternately connected to the atmospheric environment and the vacuum sampling tank to achieve the pressure balance of the sampled gas. The present invention also discloses a constant-current ambient air sampling method. The present invention breaks the foreign technical monopoly on high-precision atmospheric constant-current sampling devices, ensures the accuracy of atmospheric sampling flow control, ensures the inertness of the overall gas flow path, has flexible flow control and adjustment methods, uses commonly used industrial mass-produced devices and materials, realizes consumable-free and easy maintenance, and constructs an economical and efficient fully automatic ambient air constant-current automatic sampling system, contributing to the country's atmospheric environment monitoring and governance.

The invention relates to a composite liquid armor based on pure silica nanoparticles derived from sea sand and its production method. In our invention, composite liquid armor can be utilized in both military and civilian defense industries. Alongside its durability, the armor offers high performance, enables ease of movement, and features a lightweight, free-particle modular structure. By providing a domestic alternative, it reduces dependency on foreign technologies in this field.

The present invention belongs to the field of infrastructure technology, specifically a construction method for a subway underground excavation station project. The construction technology of the subway underground excavation station project is initially developed through research methods such as technical investigation, theoretical analysis and numerical simulation, advanced geological prediction, field experiments and field tests, induction and summary, technical refinement, and reference to a large number of foreign technologies. At the same time, the current status of similar engineering and technical research and application at home and abroad is also fully grasped. Furthermore, the causes of excavation accidents are analyzed. Based on various investigations and analyses, a detailed research outline and work plan are formulated. Furthermore, theoretical analysis and numerical simulation methods are used to study the surrounding rock stress redistribution and displacement distribution law and the force characteristics of the support structure during the pilot tunnel excavation process; so that the construction technology of the subway underground excavation station project in the present invention can be carried out quickly and safely step by step during execution, ensuring the completion time and quality.

The present application relates to the field of polymerized rosin, more specifically, it relates to a zinc-free polymerized rosin and a preparation method thereof. A zinc-free polymerized rosin comprises the following raw materials: masson rosin, inorganic acid, zinc chloride, solvent, oxaloacetic acid, and phosphotungstic acid; the inorganic acid is 0.6-1% of the mass of masson rosin, the zinc chloride is 2.5-4.5% of the mass of masson rosin, the solvent is 75-85% of the mass of masson rosin, the oxaloacetic acid is 0.04-0.08% of the mass of masson rosin, and the phosphotungstic acid is 0.04-0.08% of the mass of masson rosin. The zinc-free polymerized rosin provided in this application can not only maintain a high yield of the product, but also thoroughly remove zinc residues, which helps to break the foreign technology monopoly, enhance the overall competitiveness of the domestic ink industry, and contribute to the healthy development of the national economy.

The invention provides an application system and an application method of a flight simulation training data packet, and belongs to the technical field of aviation simulation training. The system comprises a data acquisition module, an engineering data packet processing module, a training data packet generation module, an error verification module and an adaptive output module. According to the method, an engineering data packet is constructed by arranging aircraft design data and wind tunnel data, a training data packet meeting the standard of a CAAC full-motion D-level simulator is formed after flight experiment correction, and the error is controlled within 5%. The system realizes localization of flight simulation training data packets, breaks through foreign technical monopoly, guarantees national defense safety, improves training fidelity and economical efficiency, and can be widely applied to the field of civil aviation and military aircraft simulation training.

The invention discloses a method for manufacturing a heat exchange plate of an acid and alkali resistant temperature controller, and aims to overcome the defects that a common acid and alkali resistant heat exchange plate is limited by foreign technologies and is high in cost. The method comprises the following steps: S1, loading a substrate made of a carbon material on a bottom plate; s2, loading an acid and alkali resistant protective film on the substrate; s3, loading a pressing pad above the protective film; s4, a pressing plate is loaded above the pressing pad, and the pressing plate and the bottom plate are connected together in a fastened mode to form a tool; s5, the tool is heated to the set temperature and subjected to heat preservation; s6, the tool is disassembled after being cooled; and S7, the redundant protective film on the edge of the substrate is cut off, and the substrate covered with the protective film is cleaned and dried. The heat exchange plate manufactured through the manufacturing method of the heat exchange plate of the acid and alkali resistant temperature controller is good in heat conductivity and acid and alkali resistance, acid and alkali liquid can be isolated on the premise that the heat conduction efficiency is guaranteed, the manufacturing process is simple, and cost is low.

The invention belongs to the technical field of chip manufacturing, and discloses a collecting device for a chip manufacturing process, which comprises a shell and a collector positioned in the shell. According to the present invention, the first channel, the second channel, the third channel and the gas outlet pipe are arranged in the housing; a gas mixture enters the first channel, firstly diffuses all around to enter the second channel, flows downwards along the second channel, enters the third channel from the side wall of the lower end of the collector and the bottom of the collector, flows upwards in the third channel, enters the upper end of the gas outlet pipe, and finally flows downwards along the gas outlet pipe to be discharged; the flow path of the gas mixture is reasonable, the contact time of the gas mixture in the collecting device is long, and a good condensation collecting effect is achieved. According to the invention, the dependence on foreign imported equipment and parts is greatly reduced, the foreign technical monopoly is broken, and the production cost of chips in China is greatly reduced.

The invention belongs to the technical field of new energy industry, and discloses a wind power generation type large model space agent intelligent integrated operation and maintenance system, which comprises a data acquisition module, a data processing module, a data storage module, a reasoning framework, a task scheduling module and a model management module. Through a full-system reasoning architecture and a memory conversion technology, efficient reasoning is realized, the high requirements of the new energy industry for real-time performance and accuracy are met, the landing cost of a large model is greatly reduced, the economic benefit of an enterprise is improved, meanwhile, domestic hardware and software are adopted, the autonomous controllability of the system is improved, and the economic benefit of the enterprise is improved. According to the method and the system, dependence on foreign technologies is reduced, information security and data security of the new energy industry are guaranteed, local deployment and customized development are supported, flexible configuration and optimization can be realized according to different service scenes and requirements of the new energy industry, and applicability and flexibility of the system are improved.

The invention discloses an oil-filled submarine cable insulating oil axial channeling leakage blocking method. The method comprises the steps that permeation grooves are cut in the two sides of an insulating oil leakage point outside an armor layer through a grooving machine; a plugging device composed of a sleeve, a plugging sleeve, a guide sleeve, a strip-shaped felt and a flange is installed, the sleeve is used for plugging an outer insulating oil leakage point of the armor layer, and the plugging sleeve is used for constructing an outer sealing cavity of the armor layer at permeation grooves in the two sides of the outer insulating oil leakage point of the armor layer; the pipeline is connected with an air injection port, and the air is used for providing a space without insulating oil and seawater for the sealant; a high-permeability sealant and a low-permeability sealant are injected to construct a lead sheath outer sealing ring belt, the lead sheath outer sealing ring belt is used for blocking the insulating oil from leaking along a gap between the lead sheath and the armor layer, and compared with the prior art, the continuity of the oil-filled submarine cable body is not damaged, the problem of insulating oil leakage along the axial direction is thoroughly solved, and the service life of the oil-filled submarine cable is prolonged. The repair cost is reduced, the repair period is shortened, and foreign technical monopoly is broken through.