Device for carrying out low-temperature experiment on cold insulation material
A low-temperature test and cold-keeping technology, which can be used in measurement devices, analytical materials, thermal analysis of materials, etc., and can solve the problems of inconvenience and high cost.
Inactive Publication Date: 2021-08-17
北京环冷科技有限公司
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Problems solved by technology
[0002] The low-temperature test chamber is a device used for low-temperature experiments on cold-preservation materials. Commonly used low-temperature material test chambers are generally dedicated fixed experimental devices, which are inconvenient to carry and expensive.
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[0008] The technical solutions in this patent will be clearly and completely described below in conjunction with the accompanying drawings of this patent.
[0009] It is designed to use dry ice or liquid nitrogen as two refrigerants to reduce and adjust the temperature in the test chamber.
[0010] Use dry ice to cool down: Put the dry ice into the hanging basket, fix the test sample on the operating platform, and close the box cover. Wait for the dry ice to volatilize to absorb heat, lower the temperature in the box, and stabilize the temperature in the box at the required temperature for a certain period of time. If the temperature is too low, the temperature of the test area can be adjusted through the temperature isolation valve switch to increase the internal temperature of the box.
[0011] Use liquid nitrogen to cool down: fix the experimental sample on the operating platform, and close the lid. Open the valve of the liquid nitrogen tank, slowly inject liquid nitrogen...
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The invention provides a device for carrying out a low-temperature experiment on a cold insulation material, wherein the device is characterized in that a cold insulation box is divided into a double-layer structure of an inner container and a shell, and the middle of the cold insulation box is filled with the cold insulation material; a test box is respectively provided with an air inlet valve and an exhaust valve, the air inlet valve is connected with a liquid nitrogen tank, and a flowmeter is arranged at the joint of the air inlet and the liquid nitrogen tank; the test box is of a top cover opening structure, a rubber pad is arranged between a top cover and a box body, one face of the box body is made of glass and serves as an observation window, a hanging basket is arranged in the box body and connected with the two sides of the box body in a hook mode, and dry ice is placed on the hanging basket; a heat insulation valve is arranged on the lower face of the hanging basket and used for adjusting the temperature of an experiment area; an object placing table is connected with the box body, and the height can be adjusted; a scale operation platform is placed on the object placing table, and a temperature sensor is fixedly connected with the box body. The device has the main characteristics of being safe, low in cost and convenient to carry, so that the detection efficiency of the cold insulation material is improved.
Description
technical field [0001] The invention relates to a device for low-temperature experiments on cold-preservation materials, in particular to a simple and multi-purpose low-temperature experiment device for cold-retention materials. Background technique [0002] The low-temperature test chamber is a device used for low-temperature experiments on cold-preservation materials. Commonly used low-temperature material test chambers are generally dedicated fixed experimental devices, which are inconvenient to carry and expensive. The invention relates to a device for low-temperature experiments of cold-preservation materials, which is small in size, easy to carry, and low in cost, and can be demonstrated in customers' offices or on-site. Contents of the invention [0003] The test box adopts a double-layer structure consisting of an inner tank and an outer shell, and the middle is filled with cold-insulating materials for heat insulation. The test box adopts a top-opening structure....
Claims
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Login to View More IPC IPC(8): G01N25/00
CPCG01N25/00
Inventor 马东生邓猛彭利文
Owner 北京环冷科技有限公司