Internal detection probe for deformation of small-caliber pipeline

The utility model relates to the field of internal deformation detection of oil and gas transmission pipelines, in particular to an internal detection probe for deformation of a small-caliber pipeline, which is characterized by consisting of a probe seat and a probe arm, the probe arm is hinged with the probe seat through a rivet; and the torsion spring is sleeved on the rivet and is in contact with the probe arm and the probe seat to open the probe arm and the probe seat, and a normally open end and a normally closed end are respectively formed on two sides of the rivet. The utility model aims to provide the internal detection probe for deformation of the small-caliber pipeline, and the internal detection probe can effectively solve the problem of deformation measurement of the small-caliber pipeline through a special structural design. 本实用新型涉及油气输送管道内部变形检测领域，特别是一种小口径管道变形内检测探头，其特征在于，由探头座和探头臂构成；探头臂与探头座通过铆钉铰接；扭簧套装在铆钉上，与探头臂和探头座接触，撑开探头臂和探头座，在铆钉两侧分别形成常开端和常闭端。本实用新型的目的在于提供一种小口径管道变形内检测探头，通过特殊的结构设计，能够有效解决小口径管道变形量测量问题。