A radial load testing device for pipes

By designing a radial load testing device for pipes and utilizing the balance to control the loading force and lever principle, the problem of unstable loading of fiber-reinforced plastic pipes under long-term bending loads was solved, achieving stable loading and working condition simulation, and improving the reliability and applicability of the test.

CN224456443UActive Publication Date: 2026-07-03BEIJING GLASS STEEL INST TESTING CENT CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
BEIJING GLASS STEEL INST TESTING CENT CO LTD
Filing Date
2025-07-03
Publication Date
2026-07-03

AI Technical Summary

Technical Problem

In the existing technology, when fiber-reinforced plastic pipes are subjected to bending loads during long-term service, there is a lack of stable radial load testing equipment, which leads to unstable magnitude and volatile direction of the loading force, affecting the reliability of material evaluation and structural design, and posing a potential failure risk, especially in harsh environments.

Method used

A radial load testing device for pipes was designed. The loading force between the first and second loading plates is controlled by a balance. Stable pressurization is achieved by using the lever principle. The loading direction is stable and adjustable to adapt to different pipe diameters. Hollow steel support rods are used to reduce the influence of self-weight. Limiting blocks fix the pipes. The container body simulates actual working conditions.

Benefits of technology

It achieves stable and constant loading on pipes with a stable loading direction, is applicable to different pipe diameters, can simulate actual working conditions, improves the reliability and accuracy of the test, and reduces the risk of structural failure.

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Abstract

This utility model relates to the technical field of pipe bending strain testing devices, and in particular to a pipe radial load testing device, comprising a first base plate, a second loading plate, and a first loading plate and a second base plate, with a loading gap between the first loading plate and the second loading plate; the first base plate and the first loading plate are fixedly connected by a first support rod, and the second base plate and the second loading plate are fixedly connected by a second support rod; the second loading plate has multiple connecting holes, and each first support rod passes through the connecting holes and is fixedly connected to the first base plate; it also includes a balance column, the bottom end of which is fixedly connected to the second base plate, and the top end of which passes through the second loading plate; it also includes a balance beam, which is T-shapedly hinged to the balance column, with one end of the balance beam hinged to the top of the first base plate and the other end having a loading component; by controlling the loading force between the first loading plate and the second loading plate through the balance, stable pressure can be applied to the pipe.
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