输气管道压缩机厂房设置优选方案

Setting optimization schemes of a gas pipeline compressor plant

输气管道压缩机组厂房有独立厂房和联合厂房两种主要形式,前者安全性、灵活性较好,但占地多、投资高,后者占地少、投资低,但安全性、灵活性较差,面对不断提升的安全环保要求以及用地日益紧张的局面,新建输气管道压缩机厂房的设置形式备受关注,也存在着较大的争议。为此,系统地研究了北美、苏联、欧洲、国内等标准规范中压缩机厂房设置的要求,调研了国内外多个著名管道工程的实际做法,并结合实际工程,利用专业软件对独立厂房和联合厂房两种方案开展了量化风险分析和经济评价。研究结果表明:①国内外主要设计规范均未对压缩机厂房设置形式提出明确要求;②加拿大和苏联地区,独立厂房最为常用,在美国以及欧洲,独立厂房和联合厂房设置兼而有之,而在国内,基本采用联合厂房的方案;③从站场安全及输气管道系统安全的角度考虑,独立厂房优于联合厂房方案,从经济角度考虑联合厂房方案较优;④从征地角度考虑,以4台机组为例,独立厂房方案较联合厂房方案多征用地3600平方米左右,联合厂房方案优势明显。结论认为,长输管道压气站建设过程中,若项目征地较容易,建议设置独立厂房方案。

Gas pipeline compressor plants are set mainly in two forms,i.e.,independent plants and joint plants.The former is safe and flexible,but covers a large area and needs high investment,while the latter covers a small area and requires low investment,but its safety and flexibility is poor.Facing the ever-increasing safety and environmental protection requirements and increasingly shortage of land,the setting form of a newly built gas pipeline compressor plant has attracted much attention and controversy.In this paper,the setting requirements of compressor plants stipulated in the standards and specifications of North America,the former Soviet Union,Europe,and China were studied systematically,and the actual setting approaches adopted in several domestic and foreign famous pipeline projects were investigated.Then,based on the actual engineering,quantitative risk analysis and economic evaluation were carried out on the two schemes of independent plants and joint plants by means of a specialized software.And the following research results were obtained.First,there is no clear requirements on the setting form of compressor plants in domestic and foreign main design specifications.Second,in Canada and the former Soviet Union,independent plants are widely applied.In the United States and Europe,both independent and joint plants are commonly applied.And in domestic market,joint plants are usually applied.Third,from the safety perspective of stations and gas pipeline systems,independent plants are superior to joint plants.From the economic perspective,joint plants are much better.Fourth,if both schemes are compared from the aspect of land acquisition,taking 4 compressor sets as an example,an independent plant scheme requires about 3600 m2 more land,in this way a joint plant scheme seems more dominate.However,if in the construction of gas compressor stations of long-distance pipeline with much more land easier to occupy,an independent plant scheme should be recommended.