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Broken chain protection system for scraper plate slag fishing machine

A technology of broken chain protection and slag scraper, which is applied in the direction of conveyor objects, conveyor control devices, transportation and packaging, etc., and can solve the problems of misjudgment of chain broken protection of slag scraper, prone to failure, etc.

Pending Publication Date: 2020-01-14
江苏射阳港发电有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a broken chain protection system for scraper slag remover to solve the problem that the existing scraper slag remover uses proximity switches, intermediate relays, time relays, etc. The problem of frequent misjudgment of machine disconnection protection

Method used

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  • Broken chain protection system for scraper plate slag fishing machine
  • Broken chain protection system for scraper plate slag fishing machine
  • Broken chain protection system for scraper plate slag fishing machine

Examples

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Embodiment Construction

[0018] Such as figure 2 As shown, a broken chain protection system for a scraper slag extractor includes a chain and a front chain shaft and a rear chain shaft for tensioning the chain. A proximity switch SQ1 and a proximity switch SQ2 are respectively provided on one side of the front chain shaft and the rear chain shaft. , the fracture protection system includes the DCS control cabinet, the proximity switch SQ3 and the proximity switch SQ4, the proximity switch SQ3 and the proximity switch SQ1 are connected in parallel to form the front detection component, the proximity switch SQ4 and the proximity switch SQ2 are connected in parallel to form the rear detection component, the front detection component and the rear detection component Connect to the digital input DI1 channel and the digital input DI2 channel of the DCS control cabinet respectively. The working voltage of the digital input DI1 channel and the digital input DI2 channel is DC48V, which are proximity switches SQ...

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Abstract

The invention provides a broken chain protection system for a scraper plate slag fishing machine. The broken chain protection system comprises a DCS control cabinet, a proximity switch SQ3 and a proximity switch SQ4. The proximity switch SQ3 and the proximity switch SQ1 form a front detection assembly in parallel. The proximity switch SQ4 and a proximity switch SQ2 form a rear detection assembly in parallel. The front detection assembly and the rear detection assembly are connected to a switch quantity input DI1 channel and a switch quantity input DI2 channel of the DCS control cabinet correspondingly. An alarm logic unit and a protection logic unit are respectively arranged in the DCS control cabinet. The switch quantity input DI1 channel and the switch quantity input DI2 channel are connected to the input end of the alarm logic unit and the input end of the protection logic unit correspondingly. The output end of the alarm logic unit is connected to an alarm terminal of the scraper plate slag fishing machine. The protection logic unit is connected to a start-stop terminal of the alarm terminal of the scraper plate slag fishing machine. Broken chain protection misjudgment caused by faults such as loosening of the proximity switches and damage of an intermediate relay and a time relay is avoided.

Description

technical field [0001] The invention belongs to the technical field of scraper scrapers, and in particular relates to a chain breakage protection system for scraper scrapers. Background technique [0002] The slag extractor is an important auxiliary equipment in a thermal power plant, and its stable operation directly affects the safety of the unit. The protection optimization of the slag extractor can improve the reliability of the slag extractor. Chain break protection is an important protection for the slag scraper. The inductive proximity switch (hereinafter referred to as "proximity switch") installed on the chain shaft is used to detect the concave and convex position rotation cycle of the mechanical parts, such as the time relay in the preset 1min If the ON / OFF signal is not detected within the machine, it is judged that the mechanical shaft is not rotating, and the oil pump motor is automatically stopped and a chain-break protection action alarm is issued to prevent...

Claims

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Application Information

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IPC IPC(8): B65G43/06
CPCB65G43/06
Inventor 皋德华姜旭舟潘时勇郭剑锋
Owner 江苏射阳港发电有限责任公司
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