Split mounting type magnetic flux sensor and using method thereof
A magnetic flux sensor and assembled technology, applied in the direction of the size/direction of the magnetic field, can solve the problems of wire damage and troublesome operation, and achieve the effect of saving time, saving investment and speeding up the speed.
Pending Publication Date: 2019-05-14
ZHENGZHOU UNIV
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Problems solved by technology
This on-site magnetic flux sensor still has a shortcoming. It must be fabricated for each cable that needs to measure the cable force. Generally, the sensor remains on the structure after the test. Although it can be dismantled, it will cause damage to The damage of the lead wire, and the operation is troublesome
Method used
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Embodiment 1
[0028] The assembled magnetic flux sensor is in the shape of a circular sleeve in working condition, see figure 1 , consisting of matching split body 1 and split body 2. When testing the cable force, split body 1 and split body 2 fit closely, and surround the steel cable 3 to the middle with a gap of 5mm. The internal structure of split body 1 and split body 2 is the same, see figure 2 with image 3 , mainly including the inner sleeve body 4, the outer sleeve piece 8, the excitation line segment 7 and the induction line segment 5, which are composed of the inner sleeve sheet 40 and the wire plates 41 on both sides thereof, and the anti-corrosion sealing compound 11 for filling the internal gap. The inner sleeve sheet 4 is an electrical insulator. The excitation line segment 7 and the induction line segment 5 are copper wires with insulating coating, and the line plate 41 is made of ceramics. Figure 4 It is a schematic diagram of the bonding surface of a single split body....
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The invention discloses a magnetic flux sensor, in particular to a split mounting type magnetic flux sensor and a using method thereof. The magnetic flux sensor is used for detecting a tensile force of an exposed steel cable in an existing structure; the main body of the magnetic flux sensor is divided into two parts of an upper split body and a lower split body, which are made indoors and calibrated completely; in the field, it is only required to use the upper split body and the lower split body to surround the steel cable, and attach the junction surfaces together, so that the wire segmentsin each split body are connected accordingly, thereby forming excitation coils and an induction coil; wherein the two symmetrical excitation coils is at both ends and the induction coil is at the middle part. Compared with the conventional magnetic flux sensor and the magnetic flux sensor fabricated in the field, the split mounting type magnetic flux sensor is convenient and quick to operate, saves time and money, and is economical and practical.
Description
technical field [0001] The invention relates to a magnetic flux sensor, in particular to an assembled magnetic flux sensor and its application method. Background technique [0002] In recent decades, with the application of cable structures more and more widely, the design calculation theory of suspension cable structures has also been perfected and developed. The cable force control in the construction process and in the existing structure is an important link related to the internal force and state of the structure. The deterioration of structural materials, defects or structural damage caused by accidents will cause the redistribution of internal forces of various components, especially cables. Therefore, how to determine the cable tension of the structure during construction and use has become a major problem for engineering designers. [0003] Commonly used conventional cable force testing methods are pressure sensor method and frequency method. The pressure sensor h...
Claims
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IPC IPC(8): G01R33/02
Inventor 魏建东王利
Owner ZHENGZHOU UNIV