Inter-station open-circuit starting and closed-circuit switching control system and method for pipeline coal conveying system

Abstract

The invention discloses an inter-station open-circuit starting and closed-circuit switching control system for a pipeline coal conveying system. The inter-station open-circuit starting and closed-circuit switching control system comprises a buffer tank, wherein an inlet valve a is arranged at an inlet of the buffer tank, the buffer tank is sequentially connected with a feeding pump system, a diaphragm pump pressurization system and a subordinate pump station through a pipeline G2, a pipeline G3 and a pipeline G5, and the feeding pump system is connected with a water replacement system throughthe pipeline G3; the pipeline G3 is further connected with the inlet of the buffer tank through a pipeline G4, and each of the pipeline G2, the pipeline G3, the pipeline G4, the pipeline G5 is provided with a knife gate valve, a main pipe valve a, a main pipe valve b and a main pipe valve d correspondingly; an inlet valve b and an outlet valve b are arranged at an inlet and an outlet of the feeding pump system respectively; a main pipe valve c is arranged at the position, located at an outlet of the water replacement system, of the pipeline G3, and an inlet valve c and an outlet valve c are arranged at an inlet and an outlet of the diaphragm pump pressurization system respectively; and a liquid level meter is arranged on the buffer tank, and a pressure transmitter is arranged on the pipeline G3. According to the system, the problems of high labor cost and low production efficiency in the prior art can be solved.

Description

technical field [0001] The invention belongs to the technical field of coal slurry pipeline transportation devices, and relates to a closed-circuit control system for opening and switching between stations in a pipeline coal transportation system, and also relates to a closed-circuit control method for opening and switching between stations in a pipeline coal transportation system. Background technique [0002] The Shenwei Pipeline Coal Transportation Project is the largest coal transportation pipeline with the longest transportation distance in the world, and it is also the first long-distance coal transportation pipeline built in my country. The total length of the project pipeline is 727 kilometers, and the estimated total investment of the project is 7.3 billion yuan. The designed annual coal transportation capacity is 10 million tons, which is equivalent to 16.23 million tons of coal slurry with a concentration of 53%. Passing through 18 counties and districts in the fo...

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Problems solved by technology

[0004] The purpose of the present invention is to provide an open-circuit start-up and switching closed-circuit control system between stations in a pipeline coal transportation system, which solves the high labor cost caused by manual operation and step-by-step completion of the open-circuit start-up process of pump stations in the coal transportation system existing in the prior art , The problem of low production and operation efficiency

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