37results about How to "Continuous air supply" patented technology

The invention discloses a high-pressure and high-purity nitrogen distribution device for a plume test platform and an application method for the device. The device comprises a high-pressure and high-purity nitrogen generation system and a high-pressure and high-purity nitrogen conveying system, wherein the high-pressure and high-purity nitrogen generation system is used for manufacturing and storing high-pressure and high-purity nitrogen, and the nitrogen is produced by liquid nitrogen; and the high-pressure and high-purity nitrogen conveying system is used for filtering, decompressing and distributing the nitrogen. The nitrogen can be continuously supplied to the high-pressure and high-purity nitrogen distribution device for a long time; and furthermore, a system pipeline is arranged concentratively, so that an operator can operate the high-pressure and high-purity nitrogen distribution device conveniently, quickly and safely.

The invention belongs to the technical field of agricultural equipment, and is specifically a kind of equipment for controlling diseases and insect pests of agricultural and forestry crops, including a car body, a water pipe and a spraying assembly; block, tank and hose. The driving unit is used for the movement of the vehicle body; the swing unit is used for uniform spraying of the spraying assembly. Through the mutual cooperation between the driving unit and the swing unit, on the one hand, the agricultural and forestry crops are sprayed with the pesticide solution according to the actual situation, and the spraying is uniform, so as to avoid the damage of the agricultural and forestry crops by the pests and diseases, thereby improving the effect of the prevention and control of the agricultural and forestry pests and diseases; On the one hand, the power source of the agricultural and forestry pest control equipment is utilized, thereby improving the utilization rate of resources, and at the same time reducing the external power equipment, thereby reducing the manufacturing cost of the agricultural and forestry pest control equipment.

The invention, which belongs to the technical field of the wind tunnel, particularly relates to a method and apparatus for improving an air storage type wind tunnel. The method comprises: low-pressure liquid air or low-pressure liquid nitrogen absorbs an environment heat source by a vaporizer and and is converted into normal-temperature high-pressure gas by an environment heat source; a compressed gas tank is filled with one part of the normal-temperature high-pressure gas and the other part of the normal-temperature high-pressure gas drives an expansion machine to convert high-pressure potential energy into mechanical energy so as to drive an air compressor; the expansion machine discharges exhaust gas for cooling the air compressor; normal-temperature high-pressure gas after boosting by the air compressor is inputted into the air compressor, high-pressure gas generated by compression by the air compressor and the exhaust gas discharged by a cooling outlet of the air compressor are mixed and then mixed gas enters the compressed gas tank; and compressed gas from the compressed gas tank enters a wind tunnel pipe at a high speed through a wind tunnel jet head to form a wind tunnel airflow. According to the invention, the vaporizer, the air amplifier, and the expansion machine are used for the wind tunnel field; the environmental thermal energy is utilized fully; the electric energy consumption is substantially reduced; rapid and continuous large-airflow air supply is realized; the system is simplified; the energy consumption is reduced; the efficiency is high; and the cost is low.

The invention discloses a wastewater aeration device for water supply and drainage, and belongs to the technical field of wastewater treatment. The device comprises a supporting frame, a water storagetank, a treatment barrel and an aeration barrel, a moving rod is arranged on a central shaft in the aeration barrel, a gas dispersing plate is arranged at the lower end of the moving rod, a ventilation cavity is formed in the moving rod, the gas dispersing plate comprises upper and lower layer plates with a uniform dimension and fixing rings which surround the circumferences of the upper and lower layer plates, a plurality of sector gas charging cavities which surround the moving rod are formed in the part between the upper and lower layer plates by separation plates, the ventilation cavity is communicated with each gas charging cavity, and a row of air outlet holes with gradually increasing hole diameters which are distributed from the side where the moving rod is located to the side where the fixing rings are located are formed in the part, corresponding to the upper and lower layer plates, of each gas charging cavity; the top of the moving is connected with a piston rod of a hydraulic cylinder, the upper port of the aeration barrel is sealed, and the circumference of the gas dispersing plate adhere to the inner wall of the aeration barrel. According to the device, gas supplyingis more uniform, the thoroughly mixing of gas and water can be promoted from multiple aspects to improve aeration effect, and water quality can be improved after treatment is conducted.

The invention relates to a floating liquefied natural gas regasification system used in low-temperature waters, which is characterized in that it includes: an LNG / NG conversion structure, an intermediate medium loop structure, a heating medium return flow structure and a seawater circulation structure, and the intermediate medium heater is from Heat is obtained from seawater or HM. When the inlet temperature of seawater is higher than 8°C, seawater is used as the heat source most of the time; and when the temperature of seawater is lower than 8°C, the heat source of the intermediate medium heater will be replaced by seawater and HM. The present invention introduces a heating medium in the low-temperature seawater working condition. According to different sea areas, the size and form of the heating medium can be changed. Therefore, the system can be used in various seawater working conditions, and is applicable to various sea areas in China and other foreign countries. Similar to the sea area, it can be flexibly used in various seawater working conditions, not only can adapt to low-temperature waters, but also can prevent corrosion of the intermediate medium heater. The invention can realize stable production and continuous and safe gas supply in the northern waters of China.

The invention provides a chemical vapor deposition system, a gas supply device and a gas supply method, the gas supply device includes a terminal main pipe, a first gas supply pipeline and at least one spare gas supply pipeline; the first gas supply pipeline includes a mixed gas supply Branch line, process gas supply branch line, gas mixing container and sixth electromagnetic pneumatic valve, process gas supply branch line includes process gas storage container, high-purity filter, fourth electromagnetic pneumatic valve, fifth electromagnetic pneumatic valve, third pressure transmitter , a first mass flow meter, a first purge gas pipeline and a second purge gas pipeline; the spare gas supply pipeline is the same as the first gas supply pipeline. The gas supply device of the chemical vapor deposition system of the present invention can realize on-line switching and stable, safe and continuous gas supply, and ensure the stability of process gas supply during the chemical vapor deposition process.

The invention discloses a rotary cutting device for evaporation tubes, which comprises a motor, a rotary guide body, a blade, a pneumatic radial pushing mechanism, a cutting support mechanism, and a rotary air supply mechanism. The rotating guide body is an integrated structure composed of a tube body and a ring disc, and a tube hole is arranged on the central axis. The rotating guide body can rotate under the drive of the motor. The pneumatic radial pushing mechanism, the cutting supporting mechanism and the blade are installed on the rotating guide body and can rotate with the rotating guide body. The pneumatic radial pushing mechanism is used to drive the blade to move radially on the ring disc. The rotary air supply mechanism is used to provide compressed gas for the operation of the cylinder when the cylinder rotates with the rotary guide body. When the invention works, the blade rotates around the axis of the evaporation tube to cut off the evaporation tube, so that when the evaporation tube is cut off, the incision is relatively smooth, and the blade is pushed to the center of the evaporation tube, even if a burr is generated, it is toward the inside of the evaporation tube. This will not affect the front connection installation after evaporation.

An ecological environment-friendly intelligent furniture for ornamental use, comprising a cylindrical box with an opening on the top surface of the box, a cylindrical fish tank fixed and sealed on the top surface of the box, a horizontal circular plate, a first ring and a second ring arranged in the center of the top surface of the box. Two rings, the side of the disc is connected to the inner side of the first ring through a sealed bearing, the outer side of the second ring is connected to the inner side of the box through a sealed bearing, and the bottom of the disc and the center of the inner bottom of the box are fixed and installed vertically. A cylinder, the center of the opposite end faces of the two first cylinders are fixedly installed with the second cylinder. The invention makes the first vertical plate and the second vertical plate rotate sequentially through the continuous rotation of the motor, and the air enters the fish tank to ensure the oxygen supply in the fish tank. During the moving process of the first vertical plate and the second vertical plate, it can Drive the first ring-shaped rockery and the second ring-shaped rockery to follow and move together to make the rockery staggered, which can continuously supply oxygen to the water in the fish tank while increasing the fun of viewing, and prevent the water in the fish tank from becoming stinky.