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Liquid ethane pipeline valve chamber discharging system and method thereof

A pipeline valve and venting system technology, which is applied in the pipeline system, gas/liquid distribution and storage, mechanical equipment, etc., can solve the unreported valve chamber design and research progress, and the construction of long-distance liquid ethane long-distance pipelines. Achieve the effects of reducing on-site installation work, good economy, and controlling engineering investment

Active Publication Date: 2020-04-24
CHINA PETROLEUM ENG & CONSTR +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although the liquid ethane pipeline has great prospects, the construction of long-distance liquid ethane pipelines has not yet been carried out in China
At the same time, related research mainly focuses on the liquid ethane pipeline transportation process, and the detailed valve chamber design and research progress have not been reported yet.

Method used

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  • Liquid ethane pipeline valve chamber discharging system and method thereof

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Embodiment Construction

[0030] A liquid ethane pipeline valve room relief system, such as figure 1 As shown, it mainly includes: upstream buried main line 1, main line cut-off valve 2, downstream buried main line 3, pressure transmitter 4 / 6, temperature transmitter 5 / 7, bypass cut-off valve 8 / 9, bypass replacement Valve 10 / 11, upstream bypass pipe 12, downstream bypass pipe 13, bypass extension branch pipe 14, branch pipe cut-off valve 15, branch pipe replacement valve 16, branch pipe flange 17, butt flange 18, high-pressure hose 19, vent regulator Valve 20, big and small head 21, vent pipe 23, flame arrester 24, vent torch 25.

[0031] Among them, the upstream buried main line 1, the main line cut-off valve 2, and the downstream buried main line 3 form the valve chamber main line system, which is responsible for connecting the upstream and downstream pipelines to form a liquid ethane transmission channel; the main line shut-off valve 2 is responsible for connecting or cutting off the pipeline.

[0...

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Abstract

The invention discloses a liquid ethane pipeline valve chamber discharging system and a method thereof. The system comprises a valve chamber main line system, a valve chamber bypass system, a bypass extension branch pipe system, a movable emptying system and a main line pipeline temperature detection system. Compared with the prior art, the system has the advantages that according to the characteristic that low temperature is easily generated in the pipeline body and the emptying system in the discharging process after the liquid ethane pipeline stops conveying; according to operation safety and material selection economy, the planned emptying process of the ethane pipeline valve chamber is optimized by arranging the main line temperature detection system, the bypass extension branch pipesystem, the movable emptying system and other measures, and the effect of safe and economical operation is achieved.

Description

technical field [0001] The invention relates to a liquid ethane pipeline valve chamber discharge system and method. Background technique [0002] With the development of natural gas processing technology and the development of high-efficiency natural gas utilization technology, the recovery capacity of ethane in natural gas has been continuously improved, and its long-distance transmission technology needs to be vigorously developed. Ethane product is a kind of light molar mass among the auxiliary products of natural gas, with high saturated vapor pressure, critical temperature of about 32°C, and critical pressure of about 4.5MPa, so it is possible to carry out single-phase transportation in gas or liquid state. Compared with gaseous ethane pipeline transportation, liquid transportation has the remarkable characteristics of small pipe diameter and high transportation efficiency, which is suitable for large-scale and pipeline network transportation of ethane products. [000...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F17D3/01F17D5/00
CPCF17D3/01F17D5/00
Inventor 陈俊文汤晓勇郭成华谌贵宇郭艳林杨帆
Owner CHINA PETROLEUM ENG & CONSTR
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