4results about How to "Small viscosity coefficient" patented technology

The present invention provides a rapid ice-making device and an ice particle spraying and derusting system, comprising a supercooled water preparation system, an ice-making system and a control system. The supercooled water preparation system comprises a first liquid nitrogen tank, a cooling circulation pipeline connected to the outlet end of the first liquid nitrogen tank, a heat exchanger and a fan arranged on the cooling circulation pipeline. The ice-making system comprises a first high-pressure gas tank, a first branch pipeline for passing the high-pressure gas in the first high-pressure gas tank into the inner cavity of the heat exchanger, an ice-making bin arranged below the heat exchanger, and a second branch pipeline connecting the first high-pressure gas tank and the ice drop port at the bottom of the ice-making bin, and a coil for generating an external magnetic field in the ice-making bin is provided on the ice-making bin. The device uses a magnetic field to reduce the free energy of supercooled water from a liquid phase to a solid phase, reduce the critical nucleation radius of solute molecules in the solution, and improve the nucleation rate and ice-making efficiency. At the same time, the use of an axial flow fan and an ultrasonic heater can prevent ice particles from adhering and clogging, thereby ensuring the normal operation of the ice particle derusting spray gun.

The present invention belongs to the technical field of geotechnical engineering sludge solidification, and in particular, relates to a vacuum electrochemical dredged sludge rapid solidification system and method, wherein the system comprises an electroosmosis component, which is inserted in a reinforced sludge area and used to drive the water in the reinforced sludge area to flow from the anode to the cathode; an electrode conversion part, which is electrically connected to the electroosmosis component and used to switch the flow direction of the water in the electroosmosis component; a power supply part, which is electrically connected to the electrode conversion part; a vacuum membrane, which covers the surface of the reinforced sludge area; a drainage component, which is connected to the electroosmosis component and used to discharge the water flowing into the electroosmosis component; a grouting self-heating part, which is inserted in the reinforced sludge area and located in the action area of ​​the electroosmosis component, and is used to react chemically with water to improve the strength of the soil; and a pressure and temperature detection part, which is arranged in the reinforced sludge area. The device can change the direction of water flow and improve the uniformity of drying in the soil by setting the electrode conversion part, and improve the solidification strength of the soil by setting the grouting self-heating part.

A kind of hydraulic check valve detection device.The hydraulic check valve includes inlet oil passage and outlet oil passage;The detection device includes: shell, with first gas passage in the shell;First joint is located on the surface of the shell and is communicated with the inlet oil passage of the hydraulic check valve by the first gas passage, for the first gas into the inlet oil passage of the hydraulic check valve;Sealing test component is located on the shell, for fixing the hydraulic check valve, and the outlet oil passage side of the hydraulic check valve is pressure tested.Using the above scheme, the test efficiency and test accuracy of the performance test of the hydraulic check valve can be improved.

The present invention relates to a device and a treatment method for remediating contaminated soil by a temperature-controlled electric combined leaching method, comprising: a leaching device, a pressurizing device, a soil treatment device, a circuit device, a connecting device, a supporting device, a waste liquid collecting device and a temperature-controlled circulation device. The beneficial effects of the present invention are as follows: the present invention is provided with a temperature-controlled circulation device and a leaching device, and by adjusting the temperature of the device during the remediation process, part of the bound water in the soil is converted into free water, the viscosity coefficient of the water is reduced, and the structure of the soil is damaged to a certain extent, thereby improving the permeability of the soil, promoting the desorption of heavy metal elements in the soil from the soil, and increasing the percentage of free heavy metal elements in the soil to the total elements, thereby accelerating the migration of pore water and heavy metal ions in the soil, and at the same time controlling the pH of the electrolyte in the leaching device and the waste liquid collecting device through water circulation.