Submerged chain conveyor chain breakage protection and monitoring device and submerged chain conveyor chain breakage protection and monitoring system

A chain-breaking protection and monitoring device technology, which is applied to conveyor control devices, conveyor objects, transportation and packaging, etc., can solve the problem of tripping of the motor of the slag scraper, wrong sending of the chain-break signal of the slag scraper, and failure of the nut to unscrew smoothly and other problems, to achieve the effect of improving the quality and efficiency of maintenance, improving accuracy and stability, and meeting the needs of civilized production

Inactive Publication Date: 2014-07-30
HUANENG NANJING JINLING POWER GENERATION
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AI Technical Summary

Problems solved by technology

[0003] There are many defects and inconveniences in the above-mentioned device in safety, reliability and maintenance:
[0004] 1. The monitoring signal is a proximity switch on both sides of the guide wheel. If the proximity switch on one side fails abnormally, the chain disconnection signal of the slag scraper will be sent by mistake, which will cause the motor of the slag scraper to trip, affecting the normal, stable and safe operation of the unit;
[0005] 2. Usually, the proximity switch fixes the probe part in the middle of the iron base through the front and rear cap nuts. The on-site working environment is dusty and the water vapor is heavy. The front thread of the probe is easy to be accumulated by dust, which is not easy to clean. Unscrew smoothly without damaging the wire teeth;
[0006] 3. The above-mentioned fixing method of the proximity switch leads to a relatively narrow working place, which is not convenient for the use of tools such as wrenches, making the proximity switch extremely difficult to repair

Method used

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  • Submerged chain conveyor chain breakage protection and monitoring device and submerged chain conveyor chain breakage protection and monitoring system
  • Submerged chain conveyor chain breakage protection and monitoring device and submerged chain conveyor chain breakage protection and monitoring system

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Embodiment Construction

[0022] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0023] Such as figure 1 The structure of the simulated monitoring system shown includes the slag extractor chain breakage protection monitoring device (shown in the dotted line box) and the simulated gear signal 5.

[0024] Such as figure 1 , 2 As shown, the fixed base 1 is provided with two base openings 2, and the two base openings 2 are on the same horizontal plane and have the same size. A proximity switch 4 is arranged in each base opening 2 , and the proximity switch 4 is fixed by jackscrew bolts 3 . The proximity switch 4 protrudes from the two ends of the fixed base 1, and the top screw...

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Abstract

The invention relates to a submerged chain conveyor chain breakage protection and monitoring device and a submerged chain conveyor chain breakage protection and monitoring system. Two proximity switches on one side of a gear are utilized to carry out signal monitoring, and a single submerged chain conveyor, four groups of signals in total, carries out chain monitoring operation to effectively judge whether the signals are normal or are sent by mistake; meanwhile, overhaul maintenance work is greatly facilitated by the top screw fixing mode of the proximity switches.

Description

technical field [0001] The invention relates to the equipment field of a thermal power plant, in particular to a monitoring device and a monitoring system for chain breakage protection of a slag extractor. Background technique [0002] The chain breakage protection and monitoring device of the slag scraper used in the power plant is to set a proximity switch at the position opposite to the gear plate on both sides of the guide wheel. The working principle of the proximity switch is that when an object approaches its sensing front end, the internal sensing circuit generates an electrical signal. The electrical signal is transmitted to the distributed control system (Distributed Control System, or DCS), and the DCS system sends out a signal to control whether the driving motor of the slag scraper is tripped or not. Therefore, when the slag scraper chain drives the gear disc to rotate, the proximity switch will sense the tooth pitch respectively in the same period of time, and...

Claims

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Application Information

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IPC IPC(8): B65G43/02
Inventor 吴建兵时标刘宇
Owner HUANENG NANJING JINLING POWER GENERATION
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