High-temperature pipe fitting radial deformation sensing device

Abstract

The invention relates to a high-temperature pipe fittings radial deformation sensing device. A clamping device comprises a fixture 5 and a fixture 13. A positioning device is arranged in the median part of the fixture 5 and presses out a detected element 18. Stabilizer rods 15 are symmetrically arranged on the two ends of the fixture 5, are axially perpendicular to the detected element, and presses out the detected element by means of a spring 16 so as to form a stabilizing device. A measuring probe 7 in a measuring device is over against a supporting stick 4 and is arranged on the fixture 13. One end of the measuring probe presses against the detected element by means of a probe spring 17, and the other end is intimately contacted with a fine pitch bolt 8. The free ends of two elastic elements 11 which are provided with strain gauges are contacted with the fine pitch bolt 8 and are intimately jointed with the horizontal plane of a zero adjustment sheet 9. The strain gauges 12 are connected with a test terminal 19. The high-temperature pipe fittings radial deformation sensing device of the invention has the advantages that the installation is convenient, the usage temperature can be 1100DEG C, and the test result is exact and repeatable. The high-temperature pipe fittings radial deformation sensing device of the invention is applicable to the detection of the radial deformation of various metal and nonmetal material cylindrical pipe fittings and specimens.

Description

technical field [0001] The invention relates to a radial deformation sensing device of a high-temperature pipe fitting, belonging to the technical field of structure and material deformation measurement. Background technique [0002] High-temperature and high-pressure pipelines are widely used in thermal power plants, petrochemical plants, nuclear power plants and other factories. Their safety and reliability are an important guarantee for the long-term operation of the entire production system. For components that operate under high temperature and high pressure for a long time, creep is the main factor causing their failure. The creep measurement of the pipeline, and then the life assessment and safety supervision of the pipeline can not only avoid the major hidden dangers of safe operation, but also do Arrange maintenance and prepare spare parts in a planned way, give full play to the remaining life of active materials, significantly reduce unplanned parking, and bring si...

AI Technical Summary

Problems solved by technology

There are many sensing devices for conventional deformation measurement, such as self-clip extensometer 91220430.3, a quartz glass high-temperature displacement sensor 200410100478.8, etc., but these devices are generally only suitable for short-term monitoring and laboratory applications. It is difficult to install when monitoring the radial deformation of cylindrical components

The explosion-proof on-line monitoring and alarm device (92243585.5) and high-temperature strain gauge (200520022877.7) of the main steam pipeline can meet the monitoring of circumferential deformation, but these devices are greatly affected by the working environment, and the material requirements for the belt of the alarm device are very strict. The cost is too high, and the direct high-temperature strain gauge measurement technology is difficult to meet the requirements of long-term on-line monitoring

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