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A data transmission method for pressure regulation of natural gas pipeline network

A data transmission method and natural gas pipeline network technology, which is applied in the data transmission field of natural gas pipeline network pressure regulation, can solve the problems of small PLC memory and failure to download control curve data smoothly

Active Publication Date: 2017-02-01
SHANGHAI AEROSPACE ENERGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to provide a data transmission method for natural gas pipeline network pressure regulation, to solve the problem in the prior art that the control curve data cannot be downloaded smoothly due to the small PLC memory

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0027] Faced with the long-term preset curve in the gas flow regulation and pressure regulation system based on the C / S (client / server) architecture, the PLC controller has a large amount of data storage and processing applications, and the data server as a data server is proposed. The computer and the PLC controller are matched with each other, and the method of matching the corresponding software on the computer is used for processing.

[0028] Among them, the software mainly consists of the following contents:

[0029] 1) Communication component: mainly responsible for communication with PLC system and database

[0030] 2) Database component: mainly responsible for storing curves and other communication data of preset curve data

[0031] 3) Application components: mainly responsible for man-machine interface display, curve preset operation, data trend, report and other content.

[0032] The collocation of software and PLC is mainly divided into the following two ways:

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Abstract

The invention discloses a data transmission method for the pressure regulation of a natural gas pipeline network. The data transmission method comprises the following steps that: data transmission is carried out on a PLC used for controlling a pressure regulation mechanism through a data server, a communication module is used for communication between the PLC and a database module, the database module is used for storing the data of a preset profiling curve, and an application module is used for human-computer interface display, curve preset operations, and data trend and report form processing; the memory capacity data of the PLC and the processor performance data of the PLC are acquired; preset control curve data is divided into a plurality of time periods, thus a data size in each time period is less than or equal to the memory capacity data of the PLC; the preset curve data is automatically downloaded to the PLC in batches according to a set time interval; when the last time period is concluded, the curve data of the next time period is overwritten in the memory of the PLC in batches, and the operation is sequentially circulated.

Description

technical field [0001] The invention belongs to the technical field of natural gas transportation, and in particular relates to a data transmission method for pressure regulation of a natural gas pipeline network. Background technique [0002] The Chinese patent application with publication number CN103104811A mentions in the description that natural gas is a high-quality, efficient and clean energy source. In recent decades, the global natural gas industry has developed rapidly, and the proportion of natural gas in the world's primary energy structure has also continued to increase. In the natural gas industry, pipeline transportation of natural gas is an essential link. With the development of technology, the gas transmission capacity and gas transmission pressure of the natural gas pipeline network have been continuously increased. Pipeline natural gas is generally transported to end users through long-distance pipelines at high pressure. Pressure reduction treatment, a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B19/05
Inventor 王超群徐劲孔令容寿纪斌
Owner SHANGHAI AEROSPACE ENERGY