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Screw type magnetoresistive sensor for main coolant pump and measuring method thereof

A magnetoresistive sensor, main coolant technology, applied in measurement devices, linear/angular velocity measurement, velocity/acceleration/shock measurement, etc., can solve problems affecting the safe operation of the main coolant pump, damage to the signal teeth or sensors, etc. Reliable sealing performance, good radiation resistance and high mechanical strength are achieved

Pending Publication Date: 2020-06-19
江苏利核仪控技术有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the actual use process, although the installation and debugging are strictly carried out according to the requirements of the installation manufacturer, due to the axial series movement of the pump shaft during the operation of the vertical pump, many times the transmission gear and the sensor occur. The dynamic and static friction of the engine will cause damage to the sending gear or the sensor, which seriously affects the safe operation of the main coolant pump.

Method used

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  • Screw type magnetoresistive sensor for main coolant pump and measuring method thereof
  • Screw type magnetoresistive sensor for main coolant pump and measuring method thereof
  • Screw type magnetoresistive sensor for main coolant pump and measuring method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0031] see image 3 , the present invention relates to a screw-type reluctance sensor for the main coolant pump, which includes a sensor body 3, the sensor body 3 includes a connector 31 and a probe 32, and the connector 31 includes a protective tube 311, a locking sleeve 312, rubber ring 313 and compression cap 314; the compression cap 314 is embedded in the locking sleeve 312, the rubber ring 313 is embedded in the tail of the protection tube 311, the compression cap 314 is connected with the tail of the protection tube 311 through threads, and the connecting sleeve 39 is inserted into the protection tube. The pipe 311 is connected to the shell 35 by threads;

[0032] Described shell 35 is provided with probe 32, connecting wire 34, socket 38 and insulator 36, and one end of connecting wire 34 is connected with probe 32, and the other end of connecting wire 34 is connected with socket 38, and insulator 36 is connected with shell 35 by screw thread, and socket 38 is connecte...

Embodiment 2

[0037] see Figure 5 , the present invention relates to a measuring method for a screw-type reluctance sensor of a main coolant pump, which is different from embodiment 1 in that a signal enhancement block 4 is set at the end of the sending tooth 2 in the present embodiment 2, The signal enhancement block 4 is a 20mm measurement block. Since the probe diameter of the screw-type magnetoresistive speed sensor is Φ16mm, aiming at the 20mm measuring block, it is ensured that the speed sensor can accurately receive the speed signal of the speed sending tooth when the main coolant pump is in axial series motion.

[0038] working principle:

[0039] see Image 6 , when the speed sensor is not facing the speed signal tooth, the speed sensor is in a high reluctance state at this time, and the rotation of the pump shaft drives the signal tooth to rotate. When the speed sensor is facing the improved signal tooth, the speed sensor is in a low state. reluctance state. The change of the...

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Abstract

The sensor comprises a sensor body, the sensor body comprises a connector and a probe, the sensor body is fixed to a support located on a pump shell through a nut, and the connector comprises a protection pipe, a locking sleeve, a rubber ring and a pressing cap; the pressing cap is embedded into the locking sleeve, the rubber ring is embedded into the tail of the protective tube, the pressing capis connected with the tail of the protective tube through threads, and the connecting sleeve is sleeved with the protective tube and connected with the shell through threads, wherein a probe, a connecting wire, a socket and an insulator are arranged in the shell, one end of the connecting wire is connected with the probe, the other end of the connecting wire is connected with the socket, the insulator is connected with the shell through threads, the socket is connected with the insulator through screws, and the probe, the connecting wire, the socket and the insulator are encapsulated in the shell through epoxy. According to the invention, the screw type magnetoresistive speed measurement sensor is installed at the end part, so that the safe operation of the main coolant pump is ensured; and a signal enhancement block is additionally arranged at the end part of the signaling tooth, so that the sensor can accurately receive a rotating speed signal of the rotating speed signaling tooth.

Description

technical field [0001] The invention relates to the technical field of rotating machine speed measurement, in particular to a screw-type magnetic resistance sensor for a main coolant pump and a measurement method thereof. Background technique [0002] Rotating machinery speed measurement is a conventional monitoring and protection instrument for rotating machinery. The speed measurement and control of rotating machinery is one of the monitoring parameters necessary to ensure the safe operation of rotating machinery. If the speed parameter monitoring fails, it may cause the speed of rotating machinery to lose control. As a result, the unit stalls, overspeeds or even crashes, causing major equipment damage accidents, so the usual large-scale rotating machinery is equipped with a speed measuring device to monitor the speed of the rotating machine. When the speed of the unit exceeds a certain set speed value, The speed monitoring instrument will send an overspeed signal to force...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01P3/488G01P1/02G01P1/00
CPCG01P3/488G01P1/026G01P1/00
Inventor 刘俊田露陶宇杰周广灵刘桂兴胡恒清杨芹胡乾隆王红伟吴科科吴磊黄彪
Owner 江苏利核仪控技术有限公司