A rapid test device and method for thermal insulation performance of thermal insulation bottle for logging tool

Abstract

The invention belongs to the related field of logging technology, and relates to a rapid testing device and method for thermal insulation performance of a thermal insulation bottle specially used for logging tools. The device comprises a jacket, a first thermal insulation plug, a second thermal insulation plug, a heating sheet, a power supply and a control module; the jacket is made of heat-conducting material, and its shape is adapted to the inner wall of the thermal insulation bottle to be tested; the heating sheet is arranged inside the jacket; Two temperature measurement points are arranged inside the outer casing along the axial direction of the outer casing and are separated from each other by a predetermined distance, and one of the temperature measurement points corresponds to the heating plate; the first thermal insulation plug and the second thermal insulation plug are used for Both ends are sealed; the power supply and control module are used to control the work of the heating piece and calculate the temperature rise ratio of the temperature measurement point, and then judge the thermal insulation performance of the thermal insulation bottle. The invention can judge the performance of the thermal insulation bottle for logging tool in a short time (≤2h) at room temperature, and has the advantages of simple device structure, high integration, short test method, loose test conditions and accurate results, and can effectively warn and guarantee Logging tools go well safely.

Description

technical field [0001] The invention belongs to the related field of logging technology, and more particularly, relates to a device and method for quickly testing the thermal insulation performance of thermal insulation bottles for logging tools. Background technique [0002] The vacuum insulated bottle is installed outside the logging tool to isolate the direct erosion of the logging tool by the high temperature heat flow from the outside. When the logging tool works underground, it is affected by harsh conditions such as high temperature, vibration, corrosion, and high pressure. In addition, the structure of the vacuum layer in the vacuum insulation bottle is complex, and the welding connection between the inner and outer metal cylinders is not reliable enough. There is a risk of vacuum breakage. And as long as there is a vacuum failure, the vacuum of the entire thermal insulation bottle will fail, and the thermal insulation effect will be lost. This has already happened...

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Problems solved by technology

[0004] In view of the defects or improvement needs of the existing technology, in order to solve the problem that the thermal insulation performance of the thermal insulation bottle cannot be quickly judged in the field operation, the present invention aims to design a set of rapid thermal insulation performance inspection device and method, so as to make up for the gap in the prior art

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