Device capable of measuring heat insulation effect and contact thermal resistance of brittle material
A technology of thermal insulation effect and contact thermal resistance, which is applied in the field of heat exchange and thermal protection, can solve the problems of low applicability, and achieve the effect of strong applicability, low requirements for opening processing, and avoiding breakage
Inactive Publication Date: 2021-10-26
SICHUAN UNIV
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Problems solved by technology
In the existing experimental research, there are few devices that can obtain the thermal insulation effect of brittle materials and measure the thermal contact resistance.
Most measuring devices need to process a series of temperature measurement points on the test piece to calculate the temperature of the contact interface of the test piece, which is not suitable for brittle material test pieces that are thin or brittle and difficult to punch holes on the side
Method used
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[0029] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", " The orientations or positional relationships indicated by "vertical", "horizontal", "top", "bottom", "inner" and "outer" are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and Simplified descriptions, rather than indicating or implying that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and thus should not be construed as limiting the invention. In addition, the terms "first", "second", etc. are used for descriptive purposes only, and should not be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, a feature defined as "first", "second", etc. ...
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The invention discloses a device capable of measuring the heat insulation effect and contact thermal resistance of a brittle material, and the device comprises an assembly loading test device, a temperature measurement device, a heat preservation heating device, and a cooling device, the assembly loading test device is installed at the bottom of an inner cavity of the heat preservation heating device used for providing a heating and heat preservation space for an assembly and the cooling device attached to the assembly loading test device is arranged at the bottom of the heat preservation heating device. The thermal contact resistance of a sample material under different temperatures and different interface loads and the thermal insulation performance of a thermal insulation material can be measured; except for a conventional material, the device is also suitable for a brittle thermal insulation material, so that the contact stress of a test piece is kept relatively stable after the material is heated and expanded through buffering of the loading spring, and the brittle thermal insulation material can be effectively prevented from being broken due to heating expansion in a test; and meanwhile, the device is low in tapping machining requirement on the test piece and high in applicability to fragile materials.
Description
technical field [0001] The invention relates to the field of heat exchange and heat protection, in particular to a device capable of measuring the heat insulation effect and contact heat resistance of brittle materials. Background technique [0002] In the study of thermal protection and solid heat transfer of rigid thermal insulation materials, how to obtain the thermal insulation effect and interface contact thermal resistance of thermal insulation materials is a very important issue. In actual research, it is often necessary to obtain the thermal insulation effect and interface contact thermal resistance of materials under different temperatures and loading conditions through experimental measurements. However, in the existing experimental research, there are few devices that can obtain the thermal insulation effect of brittle materials and measure the thermal contact resistance. Most measuring devices need to process a series of temperature measurement points on the tes...
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Login to View More IPC IPC(8): G01N25/20
CPCG01N25/20
Inventor 陈伟孙佳
Owner SICHUAN UNIV