Method for monitoring load of hanging bracket
A load and hanger technology, which is applied in the field of boom load monitoring, can solve the problems of strain gauge or sensor accuracy drop, expensive, complicated process, etc., and achieve the effect of eliminating the influence of calibration and measurement, simple measurement, and low measurement cost
Pending Publication Date: 2021-07-09
SUZHOU NUCLEAR POWER RES INST +2
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Problems solved by technology
However, this method requires at least the following three elements: first, strain gauges need to be pasted on the boom, and the process is complicated; second, a strain tester is required, which is relatively expensive; third, the hanger needs to be unloaded, which is time-consuming and In some practical situations, it is not allowed or impossible to load and unload, so this method cannot be implemented
If long-term monitoring is required, strain gauges generally cannot work for a long time, and the working time of a particularly good strain sensor cannot reach 5 years, and the influence of the outdoor environment must also be considered. After long-term work, the accuracy of the strain gauge or sensor will drop significantly.
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[0032] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described implementation Examples are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.
[0033] See attached Figure 1-2 , the monitoring method of the hanger load of the present embodiment, specifically comprises the following steps:
[0034] 1. Estimation of boom elongation of conventional hanger
[0035] Rigid suspenders are generally made of low-carbon steel materials, and their elastic modulus is 201GPa, gene...
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The invention discloses a method for monitoring the load of a hanging bracket. The method comprises the following steps: calibration: at a first temperature and under the condition that both a hanging rod and a marker post have no load, a first nick and a second nick are carved on the hanging rod, a first marking line and a second marking line are carved on the marker post, the original distance between the first nick and the second nick is the same as the original distance between the first marking line and the second marking line; measurement: in the measurement process, at the second temperature, the marker post is attached to a to-be-measured suspender, scales are arranged on the marker post, and the elongation of the to-be-measured suspender is obtained through the scales corresponding to the first nick and the second nick; and calculation: the load on the to-be-measured suspender is calculated according to the elongation of the to-be-measured suspender. According to the method for monitoring the load of the hanging bracket, the influence of temperature on calibration and measurement is eliminated, and measurement can be carried out within the full life cycle range of the hanging bracket through one-time calibration; measurement is simple, convenient and fast, loading and unloading are not needed, and the measurement cost is low.
Description
technical field [0001] The invention specifically relates to a method for monitoring the load of a hanger, which realizes the monitoring of the load in the whole life cycle of the hanger. Background technique [0002] The function of the support and hanger is to bear the gravity of the pipeline equipment, withstand the occasional impact load and control the displacement and vibration of the pipeline under working conditions. According to the working performance, it can be divided into rigid hanger and spring hanger. With the accumulation of running time of pipeline equipment, the status of supports and hangers will change. Once the hanger part or all loses its function, the bearing and constraint conditions will change, the displacement and stress distribution will deviate from the design state, the peak value of the stress of the pipeline equipment will increase, and the allowable stress of the material may be locally exceeded, and the high-stress creep of the high-tempera...
Claims
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IPC IPC(8): G01G3/18G01G3/00
CPCG01G3/18G01G3/00
Inventor仇云林黄小波
OwnerSUZHOU NUCLEAR POWER RES INST