Gas conveying pipeline metering and pressure adjusting device and method

Abstract

The invention discloses a gas conveying pipeline metering and pressure adjusting device. The gas conveying pipeline metering and pressure adjusting device comprises a first flange, a second flange, a first process pipeline, a second process pipeline, a first manifold, a second manifold, pipe caps, a multi-path pressure and flow control device and an instrument junction box. One end of the first process pipeline is connected with the first flange, and the other end of the first process pipeline is connected with the first manifold. One end of the second process pipeline is connected with the second flange, and the other end of the second process pipeline is connected with the second manifold. The pipe caps are connected to the two ends of the first manifold and the two ends of the second manifold. The multi-path pressure and flow control device is arranged between the first process pipeline and the second process pipeline. The invention further provides a gas conveying pipeline metering and pressure adjusting method. The gas conveying pipeline metering and pressure adjusting device and method have the beneficial effects that real-time detection and control over pressure and flow of a gas conveying pipeline station field can be achieved, high accuracy is achieved, running is stable, remote detection and control of an SCADA system are facilitated, and later maintaining and overhauling are facilitated.

Description

technical field [0001] The invention relates to the technical field of pipeline systems, in particular to a gas pipeline metering and pressure regulating device and method. Background technique [0002] In the gas pipeline station, in order to meet the normal operation of the pipeline, it is necessary to detect and control the flow and pressure of the gas transported by the pipeline. In the past, there are two main process methods: Method 1, the metering system and the pressure regulating system are respectively set up, and the two systems are relatively independent. Among them, the metering system mainly includes the front and rear gas collection pipes, the upstream and downstream straight pipe sections, the upstream and downstream shut-off valves and the flow rate. The pressure regulating system mainly includes the front and rear gas manifolds, upstream and downstream cut-off valves and regulating valves, and uploads the data of the metering system and pressure regulating ...

AI Technical Summary

Problems solved by technology

For the first method, the flow meter and the control valve cannot realize one-to-one correspondence, the flow control response time is slow, and the system adjustment accuracy is low

For the second method, the accuracy of measurement data is low, and accurate measurement and control of flow cannot be realized; the flowmeter has no remote maintenance and remote fault diagnosis functions; there is no requirement for the structure and adjustment accuracy of the regulating valve, resulting in low adjustment accuracy and high noise; The front rectifier has no heat preservation and heat tracing, and ice blockage is prone to occur during winter operation; manifolds and valves increase safety hazards and maintenance workload; equipment occupies a large area and requires high investment

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