Measuring device and method for pore throat pressure of jamin effect based on mechanochromic materials

A measuring device for pore throat pressure of Jamin effect based on mechanochromic materials, comprising:

• a bubble pressurization part, configured to inject bubbles into a microscopic visualization test part;
• the microscopic visualization test part, comprising a mechanochromic material and a pore throat structure, and wherein the microscopic visualization test part is configured to characterize changes of pore throat pressure in a process of injecting the bubbles;
• a waste liquid recycling part, configured to recycle bubble waste liquid passing through the microscopic visualization test part;
• a data acquisition and analysis part, configured to acquire changing data of the pore throat pressure in the microscopic visualization test part and analyze the changing data to obtain the pore throat pressure;
• wherein the bubble pressurization part comprises a liquid storage tank, a peristaltic pump, a gas cylinder, and a gas flowmeter;
• a liquid outlet of the liquid storage tank is connected to a syringe port of the peristaltic pump through a first needle valve, the gas cylinder is connected to an inlet of the gas flowmeter through a second needle valve, an outlet of the gas flowmeter is connected to the syringe port of the peristaltic pump through a third needle valve, the syringe port of the peristaltic pump is further connected to a bubble inlet of the pore throat structure in the microscopic visualization test part;
• the microscopic visualization test part is organic glass with the pore throat structure;
• an inner surface of the pore throat structure is coated with the mechanochromic material;
• the waste liquid recycling part comprises a back pressure valve, a waste liquid collection tank, and an intermediate container;
• a bubble outlet of the microscopic visualization test part is connected to an inlet of the back pressure valve through a fifth needle valve, an outlet of the back pressure valve is connected to the intermediate container through a sixth needle valve, the waste liquid collection tank is disposed under a liquid outlet of the back pressure valve;
• a pressure gauge is disposed in the intermediate container;
• the data acquisition and analysis part comprises a high-definition camera and a computer which are connected with each other;
• and
• the high-definition camera is disposed above a side of the microscopic visualization test part with the pore throat structure.